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Gullies in Sirenum Terra, Ma
…
| title |
Gullies in Sirenum Terra, Mars |
| date |
10.03.2006 |
| description |
This enhanced-color view shows gullies in an unnamed crater in the Terra Sirenum region of Mars. It is a sub-image from a larger view imaged by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter on Oct. 3, 2006. This scene is about 254 meters (about 830 feet) wide. The upper and left regions of this scene are in shadow, yet color variations are still apparent. The high signal to noise ratio of the HiRISE camera allows for colors to be distinguished in shadows. This allows dark features to be identified as true albedo features versus topographical features. Image credit: NASA/JPL/Univ. of Arizona |
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Sequence of Clouds, Snow Cov
…
| Title |
Sequence of Clouds, Snow Cover, Sea Ice, Sea Surface Temperature and Biosphere |
| Abstract |
This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a variety of remotely sensed data elements at different temporal resolutions. Initially, the animation shows cloud cover in motion over North America in half-hour increments from Nov. 26 to Dec. 7, 2005. The temporal pace quickens to show a 5-day moving average of daily MODIS snow cover along with daily AMSR-E sea ice from Dec. 7, 2005 to Mar. 15, 2006. As the view swings south over the Gulf of Mexico, the AMSR-E Sea Surface Temperature reveals warming ocean temperatures from March through August, 2006. As it passes over the Atlantic Ocean, the biosphere fades into view, showing both chlorophyll concentration in the ocean along with Normalized Difference Vegetation Index over the land areas. The biosphere animates over time while the view pans over northern Africa and Europe, showing data collected from September 2002 through February 2006. This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. |
| Completed |
2006-11-29 |
|
Sequence of Clouds, Snow Cov
…
| Title |
Sequence of Clouds, Snow Cover, Sea Ice, Sea Surface Temperature and Biosphere |
| Abstract |
This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a variety of remotely sensed data elements at different temporal resolutions. Initially, the animation shows cloud cover in motion over North America in half-hour increments from Nov. 26 to Dec. 7, 2005. The temporal pace quickens to show a 5-day moving average of daily MODIS snow cover along with daily AMSR-E sea ice from Dec. 7, 2005 to Mar. 15, 2006. As the view swings south over the Gulf of Mexico, the AMSR-E Sea Surface Temperature reveals warming ocean temperatures from March through August, 2006. As it passes over the Atlantic Ocean, the biosphere fades into view, showing both chlorophyll concentration in the ocean along with Normalized Difference Vegetation Index over the land areas. The biosphere animates over time while the view pans over northern Africa and Europe, showing data collected from September 2002 through February 2006. This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. |
| Completed |
2006-11-29 |
|
Sequence of Clouds, Snow Cov
…
| Title |
Sequence of Clouds, Snow Cover, Sea Ice, Sea Surface Temperature and Biosphere |
| Abstract |
This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a variety of remotely sensed data elements at different temporal resolutions. Initially, the animation shows cloud cover in motion over North America in half-hour increments from Nov. 26 to Dec. 7, 2005. The temporal pace quickens to show a 5-day moving average of daily MODIS snow cover along with daily AMSR-E sea ice from Dec. 7, 2005 to Mar. 15, 2006. As the view swings south over the Gulf of Mexico, the AMSR-E Sea Surface Temperature reveals warming ocean temperatures from March through August, 2006. As it passes over the Atlantic Ocean, the biosphere fades into view, showing both chlorophyll concentration in the ocean along with Normalized Difference Vegetation Index over the land areas. The biosphere animates over time while the view pans over northern Africa and Europe, showing data collected from September 2002 through February 2006. This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. |
| Completed |
2006-11-29 |
|
Sequence of Clouds, Snow Cov
…
| Title |
Sequence of Clouds, Snow Cover, Sea Ice, Sea Surface Temperature and Biosphere |
| Abstract |
This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a variety of remotely sensed data elements at different temporal resolutions. Initially, the animation shows cloud cover in motion over North America in half-hour increments from Nov. 26 to Dec. 7, 2005. The temporal pace quickens to show a 5-day moving average of daily MODIS snow cover along with daily AMSR-E sea ice from Dec. 7, 2005 to Mar. 15, 2006. As the view swings south over the Gulf of Mexico, the AMSR-E Sea Surface Temperature reveals warming ocean temperatures from March through August, 2006. As it passes over the Atlantic Ocean, the biosphere fades into view, showing both chlorophyll concentration in the ocean along with Normalized Difference Vegetation Index over the land areas. The biosphere animates over time while the view pans over northern Africa and Europe, showing data collected from September 2002 through February 2006. This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. |
| Completed |
2006-11-29 |
|
Sequence of Clouds, Snow Cov
…
| Title |
Sequence of Clouds, Snow Cover, Sea Ice, Sea Surface Temperature and Biosphere |
| Abstract |
This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a variety of remotely sensed data elements at different temporal resolutions. Initially, the animation shows cloud cover in motion over North America in half-hour increments from Nov. 26 to Dec. 7, 2005. The temporal pace quickens to show a 5-day moving average of daily MODIS snow cover along with daily AMSR-E sea ice from Dec. 7, 2005 to Mar. 15, 2006. As the view swings south over the Gulf of Mexico, the AMSR-E Sea Surface Temperature reveals warming ocean temperatures from March through August, 2006. As it passes over the Atlantic Ocean, the biosphere fades into view, showing both chlorophyll concentration in the ocean along with Normalized Difference Vegetation Index over the land areas. The biosphere animates over time while the view pans over northern Africa and Europe, showing data collected from September 2002 through February 2006. This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. |
| Completed |
2006-11-29 |
|
Sequence of Clouds, Snow Cov
…
| Title |
Sequence of Clouds, Snow Cover, Sea Ice, Sea Surface Temperature and Biosphere |
| Abstract |
This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a variety of remotely sensed data elements at different temporal resolutions. Initially, the animation shows cloud cover in motion over North America in half-hour increments from Nov. 26 to Dec. 7, 2005. The temporal pace quickens to show a 5-day moving average of daily MODIS snow cover along with daily AMSR-E sea ice from Dec. 7, 2005 to Mar. 15, 2006. As the view swings south over the Gulf of Mexico, the AMSR-E Sea Surface Temperature reveals warming ocean temperatures from March through August, 2006. As it passes over the Atlantic Ocean, the biosphere fades into view, showing both chlorophyll concentration in the ocean along with Normalized Difference Vegetation Index over the land areas. The biosphere animates over time while the view pans over northern Africa and Europe, showing data collected from September 2002 through February 2006. This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. |
| Completed |
2006-11-29 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet. |
| Completed |
2007-07-20 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet. |
| Completed |
2007-07-20 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet. |
| Completed |
2007-07-20 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet. |
| Completed |
2007-07-20 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet. |
| Completed |
2007-07-20 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet. |
| Completed |
2007-07-20 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet. |
| Completed |
2007-07-20 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature from 2002 to 2006 |
| Abstract |
A recent study indicates there is a correlation between ocean nutrients and changes in sea surface temperature (SST). The results show that when ocean water warms, marine plant life in the form of microscopic phytoplankton tend to decline. When water cools, plant life flourishes. Changes in phytoplankton growth influence fishery yields and the amount of carbon dioxide the oceans remove from the atmosphere. This could have major implications on the future of our ocean's food web and how it relates to climate change. The temperature data in this visualization comes from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard NASA's Terra and Aqua spacecraft. In order to see the correlation between SST and SeaWiFS data, this animation can be compared to the latter part of the animation called 'SeaWiFS Biosphere from 1997 to 2006'. Please click here to see this other animation. |
| Completed |
2006-11-22 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature from 2002 to 2006 |
| Abstract |
A recent study indicates there is a correlation between ocean nutrients and changes in sea surface temperature (SST). The results show that when ocean water warms, marine plant life in the form of microscopic phytoplankton tend to decline. When water cools, plant life flourishes. Changes in phytoplankton growth influence fishery yields and the amount of carbon dioxide the oceans remove from the atmosphere. This could have major implications on the future of our ocean's food web and how it relates to climate change. The temperature data in this visualization comes from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard NASA's Terra and Aqua spacecraft. In order to see the correlation between SST and SeaWiFS data, this animation can be compared to the latter part of the animation called 'SeaWiFS Biosphere from 1997 to 2006'. Please click here to see this other animation. |
| Completed |
2006-11-22 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 with Blue/White Elevation Change over Greenland |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier gradually receded until about 1950, where it remained stable for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of, and extension to, animation IDs #3374 and #3434. In this version, the pause on the approach to the Jakobshavn glacier where the meltwater lakes on the Greenland ice sheet are visible is shortened. In addition, the colors showing regions of elevation increase and decrease over the Greenland ice sheet are modified. |
| Completed |
2007-09-27 |
|
Updated Jakobshavn Glacier C
…
| Title |
Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006 with Blue/White Elevation Change over Greenland |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier gradually receded until about 1950, where it remained stable for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. This animation is an update of, and extension to, animation IDs #3374 and #3434. In this version, the pause on the approach to the Jakobshavn glacier where the meltwater lakes on the Greenland ice sheet are visible is shortened. In addition, the colors showing regions of elevation increase and decrease over the Greenland ice sheet are modified. |
| Completed |
2007-09-27 |
|
Antarctic Plumbing: Lake Eng
…
| Title |
Antarctic Plumbing: Lake Englehardt's Subglacial Hydraulic System |
| Abstract |
ICESat satellite laser altimeter elevation profiles from 2003-2006 collected over West Antarctica reveal numerous regions of temporally varying elevation. MODIS satellite imagery over roughly the same time period collaborates where these subglacial fluctuations have occurred. These observations have led scientists to conclude that subglacial water movement is happening in this lake region, revealing a widespread, dynamic subglacial water system that could provide important insights into ice flow and the mass balance of Antarctica's ice. |
| Completed |
2007-02-13 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature Highlighting the Gulf Stream (2002 to 2006) |
| Abstract |
A recent study indicates a correlation between ocean nutrients and changes sea surface temperature (SST). The results show that when SSTs warm, marine plant life in the form of microscopic phytoplankton declines. Similarly, when SSTs cool, marine plant life seems to flourish. Changes in phytoplankton growth influence fishery yields and the amount of carbon dioxide the oceans remove from the atmosphere. This could have major implications on the future of our ocean's food web and how it relates to climate change. The temperature data in this visualization comes from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard NASA's Terra and Aqua spacecraft. |
| Completed |
2006-11-22 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature Highlighting the Gulf Stream (2002 to 2006) |
| Abstract |
A recent study indicates a correlation between ocean nutrients and changes sea surface temperature (SST). The results show that when SSTs warm, marine plant life in the form of microscopic phytoplankton declines. Similarly, when SSTs cool, marine plant life seems to flourish. Changes in phytoplankton growth influence fishery yields and the amount of carbon dioxide the oceans remove from the atmosphere. This could have major implications on the future of our ocean's food web and how it relates to climate change. The temperature data in this visualization comes from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard NASA's Terra and Aqua spacecraft. |
| Completed |
2006-11-22 |
|
Global Rotation showing Seas
…
| Title |
Global Rotation showing Seasonal Landcover and Arctic Sea Ice |
| Abstract |
In this animation, the globe slowly rotates one full rotation while seasonal landcover and Arctic sea ice vary through time. The animation begins on September 21, 2005 when sea ice in the Arctic was at its minimum extent, and continues through September 20, 2006. This time period repeats six times during the animation, playing at a rate of day frame per frame. Over the terrain, monthly data from the seasonal Blue Marble Next Generation fades slowly from month to month. Over the water, Arctic sea ice changes from day to day. |
| Completed |
2007-02-16 |
|
Global Rotation showing Seas
…
| Title |
Global Rotation showing Seasonal Landcover and Arctic Sea Ice |
| Abstract |
In this animation, the globe slowly rotates one full rotation while seasonal landcover and Arctic sea ice vary through time. The animation begins on September 21, 2005 when sea ice in the Arctic was at its minimum extent, and continues through September 20, 2006. This time period repeats six times during the animation, playing at a rate of day frame per frame. Over the terrain, monthly data from the seasonal Blue Marble Next Generation fades slowly from month to month. Over the water, Arctic sea ice changes from day to day. |
| Completed |
2007-02-16 |
|
Global Rotation showing Seas
…
| Title |
Global Rotation showing Seasonal Landcover and Arctic Sea Ice |
| Abstract |
In this animation, the globe slowly rotates one full rotation while seasonal landcover and Arctic sea ice vary through time. The animation begins on September 21, 2005 when sea ice in the Arctic was at its minimum extent, and continues through September 20, 2006. This time period repeats six times during the animation, playing at a rate of day frame per frame. Over the terrain, monthly data from the seasonal Blue Marble Next Generation fades slowly from month to month. Over the water, Arctic sea ice changes from day to day. |
| Completed |
2007-02-16 |
|
Global Rotation showing Seas
…
| Title |
Global Rotation showing Seasonal Landcover and Arctic Sea Ice |
| Abstract |
In this animation, the globe slowly rotates one full rotation while seasonal landcover and Arctic sea ice vary through time. The animation begins on September 21, 2005 when sea ice in the Arctic was at its minimum extent, and continues through September 20, 2006. This time period repeats six times during the animation, playing at a rate of day frame per frame. Over the terrain, monthly data from the seasonal Blue Marble Next Generation fades slowly from month to month. Over the water, Arctic sea ice changes from day to day. |
| Completed |
2007-02-16 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature around the Australian Continent |
| Abstract |
The earliest technique for measuring Sea Surface Temperature (SST) was dipping a thermometer into a bucket of water. The first automated technique for determining SST was accomplished by measuring the temperature of water in the intake port of large ships. A large network of coastal buoys in U.S. waters is maintained by the National Data Buoy Center (NDBC). Since about 1990, there has also been an extensive array of moored buoys maintained across the equatorial Pacific Ocean designed to help monitor and predict the El Niño phenomenon. Since the 1980s satellites have been increasingly utilized to measure SST and have provided an enormous leap in our ability to view the spatial and temporal variation in SST. The satellite measured SST provides both a synoptic view of the ocean and a high frequency of repeat views, allowing the examination of basin-wide upper ocean dynamics not possible with ships or buoys. For example, a ship traveling at 10 knots (20 km/h) would require 10 years to cover the same area a satellite covers in two minutes. This animation uses SST data taken at nighttime from the MODIS/Aqua and MODIS/Terra satellites. This data has many important applications that permit scientists to use ocean temperatures to observe ocean circulation and locate major ocean currents. Ocean current analysis can facilitate ocean transportation. Additionally, by using SST, scientists can monitor changes in ocean temperatures and relate these to weather and climate changes like coral bleaching around the Great Barrier Reef. Finally, the SST changes have many important biological implications for hospitable/inhospitable conditions for many organisms including species of plankton, seagrasses, shellfish, fish, coral, and mammals. |
| Completed |
2005-02-28 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature around the Australian Continent |
| Abstract |
The earliest technique for measuring Sea Surface Temperature (SST) was dipping a thermometer into a bucket of water. The first automated technique for determining SST was accomplished by measuring the temperature of water in the intake port of large ships. A large network of coastal buoys in U.S. waters is maintained by the National Data Buoy Center (NDBC). Since about 1990, there has also been an extensive array of moored buoys maintained across the equatorial Pacific Ocean designed to help monitor and predict the El Niño phenomenon. Since the 1980s satellites have been increasingly utilized to measure SST and have provided an enormous leap in our ability to view the spatial and temporal variation in SST. The satellite measured SST provides both a synoptic view of the ocean and a high frequency of repeat views, allowing the examination of basin-wide upper ocean dynamics not possible with ships or buoys. For example, a ship traveling at 10 knots (20 km/h) would require 10 years to cover the same area a satellite covers in two minutes. This animation uses SST data taken at nighttime from the MODIS/Aqua and MODIS/Terra satellites. This data has many important applications that permit scientists to use ocean temperatures to observe ocean circulation and locate major ocean currents. Ocean current analysis can facilitate ocean transportation. Additionally, by using SST, scientists can monitor changes in ocean temperatures and relate these to weather and climate changes like coral bleaching around the Great Barrier Reef. Finally, the SST changes have many important biological implications for hospitable/inhospitable conditions for many organisms including species of plankton, seagrasses, shellfish, fish, coral, and mammals. |
| Completed |
2005-02-28 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature around the Australian Continent |
| Abstract |
The earliest technique for measuring Sea Surface Temperature (SST) was dipping a thermometer into a bucket of water. The first automated technique for determining SST was accomplished by measuring the temperature of water in the intake port of large ships. A large network of coastal buoys in U.S. waters is maintained by the National Data Buoy Center (NDBC). Since about 1990, there has also been an extensive array of moored buoys maintained across the equatorial Pacific Ocean designed to help monitor and predict the El Niño phenomenon. Since the 1980s satellites have been increasingly utilized to measure SST and have provided an enormous leap in our ability to view the spatial and temporal variation in SST. The satellite measured SST provides both a synoptic view of the ocean and a high frequency of repeat views, allowing the examination of basin-wide upper ocean dynamics not possible with ships or buoys. For example, a ship traveling at 10 knots (20 km/h) would require 10 years to cover the same area a satellite covers in two minutes. This animation uses SST data taken at nighttime from the MODIS/Aqua and MODIS/Terra satellites. This data has many important applications that permit scientists to use ocean temperatures to observe ocean circulation and locate major ocean currents. Ocean current analysis can facilitate ocean transportation. Additionally, by using SST, scientists can monitor changes in ocean temperatures and relate these to weather and climate changes like coral bleaching around the Great Barrier Reef. Finally, the SST changes have many important biological implications for hospitable/inhospitable conditions for many organisms including species of plankton, seagrasses, shellfish, fish, coral, and mammals. |
| Completed |
2005-02-28 |
|
MODIS Sea Surface Temperatur
…
| Title |
MODIS Sea Surface Temperature around the Australian Continent |
| Abstract |
The earliest technique for measuring Sea Surface Temperature (SST) was dipping a thermometer into a bucket of water. The first automated technique for determining SST was accomplished by measuring the temperature of water in the intake port of large ships. A large network of coastal buoys in U.S. waters is maintained by the National Data Buoy Center (NDBC). Since about 1990, there has also been an extensive array of moored buoys maintained across the equatorial Pacific Ocean designed to help monitor and predict the El Niño phenomenon. Since the 1980s satellites have been increasingly utilized to measure SST and have provided an enormous leap in our ability to view the spatial and temporal variation in SST. The satellite measured SST provides both a synoptic view of the ocean and a high frequency of repeat views, allowing the examination of basin-wide upper ocean dynamics not possible with ships or buoys. For example, a ship traveling at 10 knots (20 km/h) would require 10 years to cover the same area a satellite covers in two minutes. This animation uses SST data taken at nighttime from the MODIS/Aqua and MODIS/Terra satellites. This data has many important applications that permit scientists to use ocean temperatures to observe ocean circulation and locate major ocean currents. Ocean current analysis can facilitate ocean transportation. Additionally, by using SST, scientists can monitor changes in ocean temperatures and relate these to weather and climate changes like coral bleaching around the Great Barrier Reef. Finally, the SST changes have many important biological implications for hospitable/inhospitable conditions for many organisms including species of plankton, seagrasses, shellfish, fish, coral, and mammals. |
| Completed |
2005-02-28 |
|
AMSR-E Sea Surface Temperatu
…
| Title |
AMSR-E Sea Surface Temperature |
| Abstract |
This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a 3-day moving average of AMSR-E sea surface temperature (SST) over the western hemisphere from the beginning of 2005 to early December, 2006. In addition, seasonal MODIS landcover shows the advance and retreat of snow over the northern hemisphere. This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. |
| Completed |
2006-12-06 |
|
Jakobshavn Glacier Flow in t
…
| Title |
Jakobshavn Glacier Flow in the year 2000 and Calving Front Retreat from 2001 to 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, it raises sea levels. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. |
| Completed |
2006-09-12 |
|
Jakobshavn Glacier Flow in t
…
| Title |
Jakobshavn Glacier Flow in the year 2000 and Calving Front Retreat from 2001 to 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, it raises sea levels. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. |
| Completed |
2006-09-12 |
|
Jakobshavn Glacier Flow in t
…
| Title |
Jakobshavn Glacier Flow in the year 2000 and Calving Front Retreat from 2001 to 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, it raises sea levels. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. |
| Completed |
2006-09-12 |
|
Jakobshavn Glacier Flow in t
…
| Title |
Jakobshavn Glacier Flow in the year 2000 and Calving Front Retreat from 2001 to 2006 |
| Abstract |
Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, it raises sea levels. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006. |
| Completed |
2006-09-12 |
|
Activity on Nyiragongo
| Title |
Activity on Nyiragongo |
| Description |
On June 19, 2007, Mount Nyiragongo released a plume. The Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite took this picture the same day. In this image, the blue-tinted plume blows over Lake Kivu toward the southeast. The plume's light color suggests that it consists primarily of water vapor. A bright, opaque white puff at the volcano's summit could be part of the plume, but it is more likely a patch of clouds. Clouds also hover over neighboring Mount Nyamuragira, to the northwest.Nyiragongo [ http://www.volcano.si.edu/world/volcano.cfm?vnum=0203-03= ] is a stratovolcanoa steep-sloped cone composed of alternating layers of hardened lava, solidified ash, and rocks ejected by previous eruptions. For five decades, the volcano cradled an active lava lake in its summit crater. The lava lake drained in 1977, causing numerous fatalities. In 2002, lava flows from the volcano covered parts of the nearby city of Goma. Neighboring Nyamuragira [ http://www.volcano.si.edu/world/volcano.cfm?vnum=0203-02= ] (also known as Mount Nyamulagira) is a shield volcanoa shallow-sloped volcano resembling a giant warrior shieldformed from hardened lava flows. Despite its lower profile, it, too, harbored a lava lake in its summit crater. That lake drained in 1938, at the same time as a major eruption from one of the volcano's flanks. Historically, lava flows from this volcano have reached Lake Kivu. This volcano experienced a significant eruption in November 2006. [ http://earthobservatory.nasa.gov/Newsroom/NewImages/images_topic.php3?topic=land&img_id=17483 ] You can download a 250-meter-resolution KMZ file of Nyiragongo [ http://earthobservatory.nasa.gov/NaturalHazards/Archive/Jun2007/nyiragongo_tmo_2007170.kmz ] for use with Google Earth. [ http://earth.google.com/download-earth.html ] NASA image created by Jesse Allen, using data provided courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team. |
|
Alaska's Spring Thaw
| Title |
Alaska's Spring Thaw |
| Description |
Alaska gradually thawed over the month of May as spring's warmth crept north. The melting snow and thawing ice filled the Yukon River until it bulged over its banks with runoff when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the left image on May 23, 2006. Two weeks later, on June 5, the floods had drained and the Innoko River near Holy Cross, Alaska, was flooded. These images have been enhanced using MODIS' observations of shortwave and near-infrared energy to make it possible to see the transition on the surface from frozen to liquid water. On May 23, snow (light blue) still dusts the mountains around the river and chunks of light blue ice cling to the river's banks. Despite these signs of winter, most of the land and river are free of snow and ice. Just two weeks earlier, on May 10, the whole region had been frozen, and the rapid melt-off is evident in the swollen Yukon River. By June 5, nearly all of the snow was gone. Though clouds cover the mountains in the northwest, the ground beneath shows only traces of snow.The flooding in the upper reaches of the Yukon River has subsided, but the Innoko River, a tributary of the Yukon, is now flooded, the liquid water an inky black. The melting snow has revealed patches of dark red where widespread fire has charred the landscape. In the summers of 2004 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12414 ] and 2005 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=13008 ], millions of acres of Alaska's forest burned in lightning-ignited fires. In this image, burn scars range form very red, likely more recent or more severe burns, to pinkish, likely older or less severe burns. NASA images courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
Alaska's Spring Thaw
| Title |
Alaska's Spring Thaw |
| Description |
Alaska gradually thawed over the month of May as spring's warmth crept north. The melting snow and thawing ice filled the Yukon River until it bulged over its banks with runoff when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the left image on May 23, 2006. Two weeks later, on June 5, the floods had drained and the Innoko River near Holy Cross, Alaska, was flooded. These images have been enhanced using MODIS' observations of shortwave and near-infrared energy to make it possible to see the transition on the surface from frozen to liquid water. On May 23, snow (light blue) still dusts the mountains around the river and chunks of light blue ice cling to the river's banks. Despite these signs of winter, most of the land and river are free of snow and ice. Just two weeks earlier, on May 10, the whole region had been frozen, and the rapid melt-off is evident in the swollen Yukon River. By June 5, nearly all of the snow was gone. Though clouds cover the mountains in the northwest, the ground beneath shows only traces of snow.The flooding in the upper reaches of the Yukon River has subsided, but the Innoko River, a tributary of the Yukon, is now flooded, the liquid water an inky black. The melting snow has revealed patches of dark red where widespread fire has charred the landscape. In the summers of 2004 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12414 ] and 2005 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=13008 ], millions of acres of Alaska's forest burned in lightning-ignited fires. In this image, burn scars range form very red, likely more recent or more severe burns, to pinkish, likely older or less severe burns. NASA images courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
Alaska's Spring Thaw
| Title |
Alaska's Spring Thaw |
| Description |
Alaska gradually thawed over the month of May as spring's warmth crept north. The melting snow and thawing ice filled the Yukon River until it bulged over its banks with runoff when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the left image on May 23, 2006. Two weeks later, on June 5, the floods had drained and the Innoko River near Holy Cross, Alaska, was flooded. These images have been enhanced using MODIS' observations of shortwave and near-infrared energy to make it possible to see the transition on the surface from frozen to liquid water. On May 23, snow (light blue) still dusts the mountains around the river and chunks of light blue ice cling to the river's banks. Despite these signs of winter, most of the land and river are free of snow and ice. Just two weeks earlier, on May 10, the whole region had been frozen, and the rapid melt-off is evident in the swollen Yukon River. By June 5, nearly all of the snow was gone. Though clouds cover the mountains in the northwest, the ground beneath shows only traces of snow.The flooding in the upper reaches of the Yukon River has subsided, but the Innoko River, a tributary of the Yukon, is now flooded, the liquid water an inky black. The melting snow has revealed patches of dark red where widespread fire has charred the landscape. In the summers of 2004 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12414 ] and 2005 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=13008 ], millions of acres of Alaska's forest burned in lightning-ignited fires. In this image, burn scars range form very red, likely more recent or more severe burns, to pinkish, likely older or less severe burns. NASA images courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
Floods in Madagascar
| Title |
Floods in Madagascar |
| Description |
A string of tropical cyclones, including Cyclones Favio, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14119 ] Clovis, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14055 ] and Bondo, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14052 ] struck Madagascar from December to February 2007, dumping heavy rain on the island nation. The resulting floods left almost 25,000 people in need of assistance and destroyed an estimated 200,000 tons of rice, reported Reuters [ http://www.alertnet.org/thenews/newsdesk/L19321059.htm ] on February 19. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image of flooding in western Madagascar on February 21, 2007. Full of the region's characteristic red mud, the Betsiboka River and surrounding rivers are bright blue instead of black or dark blue, as water usually is in this type of image. The lower image, acquired on December 16, 2006, shows the rivers before the cyclones struck. These rivers are prone to flooding during the rainy season, and the cyclones and seasonal rains pushed them well over their dry-season extent. By February 21, the Betsiboka was a wide blue ribbon surrounded by pools of water. These images were made with infrared and visible light so that water is black and blue. Clouds are blue and white, and plant-covered land is green. Bare ground is tan, freshly burned land is dark orange, and active fires are outlined in red. The rains not only brought floods, but turned the landscape from tan to green as plants flourished. To see a photo-like version of the images, please visit the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Madagascar/2007052 ] web site. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
|
Floods in Madagascar
| Title |
Floods in Madagascar |
| Description |
A string of tropical cyclones, including Cyclones Favio, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14119 ] Clovis, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14055 ] and Bondo, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14052 ] struck Madagascar from December to February 2007, dumping heavy rain on the island nation. The resulting floods left almost 25,000 people in need of assistance and destroyed an estimated 200,000 tons of rice, reported Reuters [ http://www.alertnet.org/thenews/newsdesk/L19321059.htm ] on February 19. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image of flooding in western Madagascar on February 21, 2007. Full of the region's characteristic red mud, the Betsiboka River and surrounding rivers are bright blue instead of black or dark blue, as water usually is in this type of image. The lower image, acquired on December 16, 2006, shows the rivers before the cyclones struck. These rivers are prone to flooding during the rainy season, and the cyclones and seasonal rains pushed them well over their dry-season extent. By February 21, the Betsiboka was a wide blue ribbon surrounded by pools of water. These images were made with infrared and visible light so that water is black and blue. Clouds are blue and white, and plant-covered land is green. Bare ground is tan, freshly burned land is dark orange, and active fires are outlined in red. The rains not only brought floods, but turned the landscape from tan to green as plants flourished. To see a photo-like version of the images, please visit the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Madagascar/2007052 ] web site. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
|
Floods in Northern Argentina
| Title |
Floods in Northern Argentina |
| Description |
Months of flooding washed even more mud into the wide Rio de la Plata estuary than usual, changing its normally tan waters to a deep chocolate brown. Floods swept across Argentina and Uruguay starting in January and ending in late March 2007, when nearly half the average annual rainfall came down in just a few days. The floods inundated farmland and isolated and damaged cities. Soy farmers may have lost more than two million metric tons of their crop in Santa Fe, the most affected province, reported Bloomberg. [ http://www.bloomberg.com/apps/news?pid=20601086&sid=ajKC2Su30zLs&refer=latin_america ] As the floods drained down the Paraná and Uruguay Rivers, the water swept soil into the rivers. By the time the two rivers converged into the Rio de la Plata, the water was thick with sediment as shown in the top, photo-like image. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the image on April 12, 2007. The lower image, also from Terra MODIS, was taken the previous year, when the sediment in the river was closer to normal levels. The high volume of water draining into the estuary has turned the normally calm, bland surface into multi-shaded streams of mixing water. The high flow is also pushing more sediment out into the hook-shaped Samborombón Bay on the south side of the estuary. Signs of flooding are also evident in the wetlands along the Paraná River. Instead of being deep green as they were in April 2006, the wetlands are almost black under a layer of water. Tan streams of sediment flow from the main channel of the river over the soaked wetlands. Beyond the wetlands and the riverbanks are tiny tan and green squares of farmland. The silver semi-circle on the southern bank of the Rio de la Plata is Argentina's capital, Buenos Aires, and the constellation of cities that surround it. Uruguay's capital, Montevideo, is the silver area along the northern shore of the estuary in the top image (under clouds in the 2006 image). NASA image created by Jesse Allen, using data provided courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team. |
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Floods in Northern Argentina
| Title |
Floods in Northern Argentina |
| Description |
Months of flooding washed even more mud into the wide Rio de la Plata estuary than usual, changing its normally tan waters to a deep chocolate brown. Floods swept across Argentina and Uruguay starting in January and ending in late March 2007, when nearly half the average annual rainfall came down in just a few days. The floods inundated farmland and isolated and damaged cities. Soy farmers may have lost more than two million metric tons of their crop in Santa Fe, the most affected province, reported Bloomberg. [ http://www.bloomberg.com/apps/news?pid=20601086&sid=ajKC2Su30zLs&refer=latin_america ] As the floods drained down the Paraná and Uruguay Rivers, the water swept soil into the rivers. By the time the two rivers converged into the Rio de la Plata, the water was thick with sediment as shown in the top, photo-like image. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the image on April 12, 2007. The lower image, also from Terra MODIS, was taken the previous year, when the sediment in the river was closer to normal levels. The high volume of water draining into the estuary has turned the normally calm, bland surface into multi-shaded streams of mixing water. The high flow is also pushing more sediment out into the hook-shaped Samborombón Bay on the south side of the estuary. Signs of flooding are also evident in the wetlands along the Paraná River. Instead of being deep green as they were in April 2006, the wetlands are almost black under a layer of water. Tan streams of sediment flow from the main channel of the river over the soaked wetlands. Beyond the wetlands and the riverbanks are tiny tan and green squares of farmland. The silver semi-circle on the southern bank of the Rio de la Plata is Argentina's capital, Buenos Aires, and the constellation of cities that surround it. Uruguay's capital, Montevideo, is the silver area along the northern shore of the estuary in the top image (under clouds in the 2006 image). NASA image created by Jesse Allen, using data provided courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team. |
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Floods in Northern Australia
| Title |
Floods in Northern Australia |
| Description |
Floods swept across Australia's Northern Territory as the six-month rainy season drew to a close in April 2006. Worst-affected was the city of Katherine, where water from an overflowing Katherine River reached up to the roofs of houses in some areas, reported the Australian Broadcast Corporation (ABC). The floods around Katherine had largely subsided when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite acquired the top image on April 10, 2006, but the nearby Daly River was still swollen. Though not visible in this image, the city of Katherine sits along the Katherine River near the point where the label meets the river. The only clear signs of human habitation are brilliant green squares created by agriculture along both rivers. In addition to farm fields, large pools of flood water, inky black in this image, also line the banks of the Daly River. According to ABC News, the river was still rising on April 10, and those who lived in the town of Daly River near the river's mouth, were preparing to evacuate. The lower image, from March 1, 2006, shows the river basin earlier in the rainy season before the floods set in. To track the floods, see the MODIS Rapid Response Web site, where daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia2/2006098 ] of Australia are available. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
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