|
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Greenland in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. 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 which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. |
| Completed |
2007-09-25 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Greenland in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. 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 which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. |
| Completed |
2007-09-25 |
|
Arctic Sea Ice Maximum Conce
…
| Title |
Arctic Sea Ice Maximum Concentrations 1979-2006 |
| Abstract |
This visualization shows the annual maximum amount of winter Arctic ice from 1979 to 2006. In 2005 and 2006, the winter ice maximum was about 6% smaller than the average winter ice over the 26 year period. The expected winter ice retreat is 1.5 to 2% loss per decade. The same data is also shown with a yellow region representing the cumulative or maximum extent of winter ice observed from 1979 to 2006. |
| Completed |
2006-09-06 |
|
Arctic Sea Ice Maximum Conce
…
| Title |
Arctic Sea Ice Maximum Concentrations 1979-2006 |
| Abstract |
This visualization shows the annual maximum amount of winter Arctic ice from 1979 to 2006. In 2005 and 2006, the winter ice maximum was about 6% smaller than the average winter ice over the 26 year period. The expected winter ice retreat is 1.5 to 2% loss per decade. The same data is also shown with a yellow region representing the cumulative or maximum extent of winter ice observed from 1979 to 2006. |
| Completed |
2006-09-06 |
|
Arctic Sea Ice Maximum Conce
…
| Title |
Arctic Sea Ice Maximum Concentrations 1979-2006 |
| Abstract |
This visualization shows the annual maximum amount of winter Arctic ice from 1979 to 2006. In 2005 and 2006, the winter ice maximum was about 6% smaller than the average winter ice over the 26 year period. The expected winter ice retreat is 1.5 to 2% loss per decade. The same data is also shown with a yellow region representing the cumulative or maximum extent of winter ice observed from 1979 to 2006. |
| Completed |
2006-09-06 |
|
Arctic Sea Ice Maximum Conce
…
| Title |
Arctic Sea Ice Maximum Concentrations 1979-2006 |
| Abstract |
This visualization shows the annual maximum amount of winter Arctic ice from 1979 to 2006. In 2005 and 2006, the winter ice maximum was about 6% smaller than the average winter ice over the 26 year period. The expected winter ice retreat is 1.5 to 2% loss per decade. The same data is also shown with a yellow region representing the cumulative or maximum extent of winter ice observed from 1979 to 2006. |
| Completed |
2006-09-06 |
|
Arctic Sea Ice Maximum Conce
…
| Title |
Arctic Sea Ice Maximum Concentrations 1979-2006 |
| Abstract |
This visualization shows the annual maximum amount of winter Arctic ice from 1979 to 2006. In 2005 and 2006, the winter ice maximum was about 6% smaller than the average winter ice over the 26 year period. The expected winter ice retreat is 1.5 to 2% loss per decade. The same data is also shown with a yellow region representing the cumulative or maximum extent of winter ice observed from 1979 to 2006. |
| Completed |
2006-09-06 |
|
Arctic Sea Ice Maximum Conce
…
| Title |
Arctic Sea Ice Maximum Concentrations 1979-2006 |
| Abstract |
This visualization shows the annual maximum amount of winter Arctic ice from 1979 to 2006. In 2005 and 2006, the winter ice maximum was about 6% smaller than the average winter ice over the 26 year period. The expected winter ice retreat is 1.5 to 2% loss per decade. The same data is also shown with a yellow region representing the cumulative or maximum extent of winter ice observed from 1979 to 2006. |
| Completed |
2006-09-06 |
|
Arctic Sea Ice Maximum Conce
…
| Title |
Arctic Sea Ice Maximum Concentrations 1979-2006 |
| Abstract |
This visualization shows the annual maximum amount of winter Arctic ice from 1979 to 2006. In 2005 and 2006, the winter ice maximum was about 6% smaller than the average winter ice over the 26 year period. The expected winter ice retreat is 1.5 to 2% loss per decade. The same data is also shown with a yellow region representing the cumulative or maximum extent of winter ice observed from 1979 to 2006. |
| 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 |
|
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 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Yearly Minimum Sea Ic
…
| Title |
Arctic Yearly Minimum Sea Ice Concentration 1979-2003 |
| Abstract |
This animation shows the yearly minimum sea ice concentration from September for each year from 1979 through 2003. The average sea ice extent from 1979-2002 is outlined in orange. |
| Completed |
2004-04-08 |
|
Arctic Sea Ice Context Shot
| Title |
Arctic Sea Ice Context Shot |
| Abstract |
This is a contextual setup animation intended to be shown before the visualization of several cryosphere datasets. The cryosphere datasets are rendered with the same final camera position. This visualization was created in support of the October 2003 Cryosphere Earth Science Update (ESU). |
| Completed |
2003-10-15 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Alaska in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. 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 which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. An image of the sea ice on September 14, 2007 is included below, along with a corresponding image from September 21, 2005 showing the previous minimum sea ice extent. |
| Completed |
2007-09-11 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Alaska in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. 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 which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. An image of the sea ice on September 14, 2007 is included below, along with a corresponding image from September 21, 2005 showing the previous minimum sea ice extent. |
| Completed |
2007-09-11 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Alaska in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. 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 which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. An image of the sea ice on September 14, 2007 is included below, along with a corresponding image from September 21, 2005 showing the previous minimum sea ice extent. |
| Completed |
2007-09-11 |
|
Arctic Sea Ice Minimum Conce
…
| Title |
Arctic Sea Ice Minimum Concentration for 1979-2006 |
| Abstract |
This animation shows the annual minimum Arctic sea ice extent and concentration from 1979 to 2006. Average climatology from 1979 to 2004 is shown as a yellow outline. |
| Completed |
2006-10-02 |
|
Arctic Sea Ice Minimum Conce
…
| Title |
Arctic Sea Ice Minimum Concentration for 1979-2006 |
| Abstract |
This animation shows the annual minimum Arctic sea ice extent and concentration from 1979 to 2006. Average climatology from 1979 to 2004 is shown as a yellow outline. |
| Completed |
2006-10-02 |
|
Arctic Sea Ice Minimum Conce
…
| Title |
Arctic Sea Ice Minimum Concentration for 1979-2006 |
| Abstract |
This animation shows the annual minimum Arctic sea ice extent and concentration from 1979 to 2006. Average climatology from 1979 to 2004 is shown as a yellow outline. |
| Completed |
2006-10-02 |
|
Arctic Sea Ice Minimum Conce
…
| Title |
Arctic Sea Ice Minimum Concentration for 1979-2006 |
| Abstract |
This animation shows the annual minimum Arctic sea ice extent and concentration from 1979 to 2006. Average climatology from 1979 to 2004 is shown as a yellow outline. |
| Completed |
2006-10-02 |
|
Arctic Sea Ice Minimum Conce
…
| Title |
Arctic Sea Ice Minimum Concentration for 1979-2006 |
| Abstract |
This animation shows the annual minimum Arctic sea ice extent and concentration from 1979 to 2006. Average climatology from 1979 to 2004 is shown as a yellow outline. |
| Completed |
2006-10-02 |
|
|
