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Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Zoom-in to plasmapause-induc …
Title Zoom-in to plasmapause-induced TEC enhancement - April 2001 (Version 2)
Abstract Space weather events which disturb the plasmapause (displayed here as a green surface enclosing the Earth) can propagate down to the Earth's ionosphere. There they enhance the ionosphere electron content which can disrupt radio signals from satellites. This movie is a variation on animation ID 3311 with slightly different camera motions.
Completed 2005-11-18
Net Radiation Flux Compared …
Title Net Radiation Flux Compared to Clouds (WMS)
Abstract The Earth's climate is determined by energy transfer from the sun to the Earth's land, oceans, and atmosphere. As the Earth rotates, the sun lights up only part of the Earth at a time, and some of that incoming solar energy is reflected and some is absorbed, depending on type of area it lights. The amount of reflection and absorption is critical to the climate. An instrument named CERES orbits the Earth every 99 minutes and measures the reflected solar energy. This animation shows the net radiation flux within view of CERES during 29 orbits on June 20 and 21 of 2003. The net flux is the incoming solar flux minus the outgoing reflected (shortwave) and thermal (longwave) radiation. If the flux in a region is positive, the Earth is being warmed by the sun in that region, while cooling regions have a negative flux. It is clear from the animation that the most intensive heating occurs in ocean regions with few clouds, while the second most intense are cloud-free regions over vegetated land areas. Deserts, cloudy regions, and ice caps all reflect enough solar radiation to reduce the amount of heating. Regions of night are, of course, cooling regions because there is no incoming flux at all.
Completed 2005-06-21
Net Radiation Flux Compared …
Title Net Radiation Flux Compared to Clouds (WMS)
Abstract The Earth's climate is determined by energy transfer from the sun to the Earth's land, oceans, and atmosphere. As the Earth rotates, the sun lights up only part of the Earth at a time, and some of that incoming solar energy is reflected and some is absorbed, depending on type of area it lights. The amount of reflection and absorption is critical to the climate. An instrument named CERES orbits the Earth every 99 minutes and measures the reflected solar energy. This animation shows the net radiation flux within view of CERES during 29 orbits on June 20 and 21 of 2003. The net flux is the incoming solar flux minus the outgoing reflected (shortwave) and thermal (longwave) radiation. If the flux in a region is positive, the Earth is being warmed by the sun in that region, while cooling regions have a negative flux. It is clear from the animation that the most intensive heating occurs in ocean regions with few clouds, while the second most intense are cloud-free regions over vegetated land areas. Deserts, cloudy regions, and ice caps all reflect enough solar radiation to reduce the amount of heating. Regions of night are, of course, cooling regions because there is no incoming flux at all.
Completed 2005-06-21
Global Atmospheric Surface P …
Title Global Atmospheric Surface Pressure during Hurricane Frances (WMS)
Abstract The weight of the Earth's atmosphere exerts pressure on the surface of the Earth. This pressure varies from place-to-place due the variations in the Earth's surface since higher altitudes have less atmosphere above them than lower altitudes. Atmospheric pressure also varies from time-to-time due to the uneven heating of the atmosphere by the sun and the rotation of the Earth, causing weather. This animation shows the atmospheric surface pressure for the whole globe from September 1, 2004, through September 5, 2004, during the period of Hurricane Frances in the western Atlantic Ocean and Typhoon Songda in the western Pacific Ocean. The major changes in pressure occur over land where the surface altitude varies, but the sharp, moving low pressures areas for Frances and Songda can be clearly seen in the oceans. Since changing surface pressure areas over land are hard to see in these images due to the strong altitude variations, plots of the atmospheric surface pressure are almost never used to study the weather. A different plot, of sea-level pressure, is used instead.
Completed 2005-07-25
Global Atmospheric Surface P …
Title Global Atmospheric Surface Pressure during Hurricane Frances (WMS)
Abstract The weight of the Earth's atmosphere exerts pressure on the surface of the Earth. This pressure varies from place-to-place due the variations in the Earth's surface since higher altitudes have less atmosphere above them than lower altitudes. Atmospheric pressure also varies from time-to-time due to the uneven heating of the atmosphere by the sun and the rotation of the Earth, causing weather. This animation shows the atmospheric surface pressure for the whole globe from September 1, 2004, through September 5, 2004, during the period of Hurricane Frances in the western Atlantic Ocean and Typhoon Songda in the western Pacific Ocean. The major changes in pressure occur over land where the surface altitude varies, but the sharp, moving low pressures areas for Frances and Songda can be clearly seen in the oceans. Since changing surface pressure areas over land are hard to see in these images due to the strong altitude variations, plots of the atmospheric surface pressure are almost never used to study the weather. A different plot, of sea-level pressure, is used instead.
Completed 2005-07-25
Global Surface Air Temperatu …
Title Global Surface Air Temperature during Hurricane Frances (WMS)
Abstract As the Sun's energy reaches the Earth, it is either reflected, absorbed by the clouds, or absorbed by the Earth's surface. The part absorbed by the Earth's surface heats the Earth, which then heats the air just above the surface. This process occurs rapidly in the case of dry land and slowly in the case of the oceans. This animation shows the surface air temperature at an altitude of 2 meters for the whole globe from September 1, 2004, through September 5, 2004, during the period of Hurricane Frances in the western Atlantic Ocean and Typhoon Songda in the western Pacific Ocean. The animation clearly shows the air over land reacting rapidly to solar heating during the day and cooling at night, while the daily solar cyle is not visible in the temperature of the air over the ocean. A very dynamic region of changing air temperature is visible in the interaction between the cold air over Antarctica and the warmer mid-latitude air over the southern oceans during this region of polar night. Hurricane Frances and Typhhon Songda are just barely visible as circulating temperature patterns in the western Atlantic and Pacific Oceans.
Completed 2005-07-25
Global Surface Air Temperatu …
Title Global Surface Air Temperature during Hurricane Frances (WMS)
Abstract As the Sun's energy reaches the Earth, it is either reflected, absorbed by the clouds, or absorbed by the Earth's surface. The part absorbed by the Earth's surface heats the Earth, which then heats the air just above the surface. This process occurs rapidly in the case of dry land and slowly in the case of the oceans. This animation shows the surface air temperature at an altitude of 2 meters for the whole globe from September 1, 2004, through September 5, 2004, during the period of Hurricane Frances in the western Atlantic Ocean and Typhoon Songda in the western Pacific Ocean. The animation clearly shows the air over land reacting rapidly to solar heating during the day and cooling at night, while the daily solar cyle is not visible in the temperature of the air over the ocean. A very dynamic region of changing air temperature is visible in the interaction between the cold air over Antarctica and the warmer mid-latitude air over the southern oceans during this region of polar night. Hurricane Frances and Typhhon Songda are just barely visible as circulating temperature patterns in the western Atlantic and Pacific Oceans.
Completed 2005-07-25
Temperature Response, Global …
Title Temperature Response, Global View Over Europe
Completed 2001-12-05
Temperature Response, Global …
Title Temperature Response, Global View Over Europe
Completed 2001-12-05
Temperature Response, Global …
Title Temperature Response, Global View Over Europe
Completed 2001-12-05
ViSBARD: The Wind from the S …
Title ViSBARD: The Wind from the Sun
Abstract The ViSBARD (Visual System for Browsing, Analysis, and Retrieval of Data) analysis package has an option to propagate measurements carried by the solar wind. In this visualization created from ViSBARD screenshots, three spacecraft ahead of the Earth's bow shock measure the magnetic field as it is carried by the solar wind towards the Earth. Their positions as projected according to the flow speed are noted with the small glyph (Wind = yellow, Geotail = blue, IMP-8 = green). The spacecraft actually move very little over the time interval shown, but a spatial picture emerges when we use a knowledge of the wind velocity to spread the vectors out according to how they flowed past the point of observation. Arrows on the satellite glyphs indicate the magnitude and direction of the magnetic field while the color also represents the intensity (red being the highest, blue the lowest). As the wind flows, we can rapidly obtain information on the extended geometry of convected structures. The wire-frame at the left is a representation of the Earth's bow shock (about 100 Earth radii across in what is shown) that shows where the Sun's magnetic field would begin to be affected by that the Earth. (The effect of the interaction is not shown.)
Completed 2003-12-04
ViSBARD: The Wind from the S …
Title ViSBARD: The Wind from the Sun
Abstract The ViSBARD (Visual System for Browsing, Analysis, and Retrieval of Data) analysis package has an option to propagate measurements carried by the solar wind. In this visualization created from ViSBARD screenshots, three spacecraft ahead of the Earth's bow shock measure the magnetic field as it is carried by the solar wind towards the Earth. Their positions as projected according to the flow speed are noted with the small glyph (Wind = yellow, Geotail = blue, IMP-8 = green). The spacecraft actually move very little over the time interval shown, but a spatial picture emerges when we use a knowledge of the wind velocity to spread the vectors out according to how they flowed past the point of observation. Arrows on the satellite glyphs indicate the magnitude and direction of the magnetic field while the color also represents the intensity (red being the highest, blue the lowest). As the wind flows, we can rapidly obtain information on the extended geometry of convected structures. The wire-frame at the left is a representation of the Earth's bow shock (about 100 Earth radii across in what is shown) that shows where the Sun's magnetic field would begin to be affected by that the Earth. (The effect of the interaction is not shown.)
Completed 2003-12-04
Monthly Average Erythemal In …
Title Monthly Average Erythemal Index (UV exposure) for 2000-2001 (WMS)
Abstract The Erythemal Index is a measure of ultraviolet (UV) radiation at ground level on the Earth. (The word 'erythema' means an abnormal redness of the skin, such as is caused by spending too much time in the sun--a sunburn is damage to your skin cells caused by UV radiation.) Atmospheric ozone shields life at the surface from most of the harmful components of solar radiation. Chemical processes in the atmosphere can affect the level of protection provided by the ozone in the upper atmosphere. This thinning of the atmospheric ozone in the stratosphere leads to elevated levels of UV at ground level and increases the risks of DNA damage in living organisms.
Completed 2005-03-04
Monthly Average Erythemal In …
Title Monthly Average Erythemal Index (UV exposure) for 2000-2001 (WMS)
Abstract The Erythemal Index is a measure of ultraviolet (UV) radiation at ground level on the Earth. (The word 'erythema' means an abnormal redness of the skin, such as is caused by spending too much time in the sun--a sunburn is damage to your skin cells caused by UV radiation.) Atmospheric ozone shields life at the surface from most of the harmful components of solar radiation. Chemical processes in the atmosphere can affect the level of protection provided by the ozone in the upper atmosphere. This thinning of the atmospheric ozone in the stratosphere leads to elevated levels of UV at ground level and increases the risks of DNA damage in living organisms.
Completed 2005-03-04
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
THEMIS Orbits: Transitions
Title THEMIS Orbits: Transitions
Abstract Between the dayside and nightside phases of the mission, the five spacecraft will conduct orbit change maneuvers over a period of three months. During this visualization, the camera position is locked in GSE coordinates, keeping the Sun to the left. The orbital axis is actually fixed in space but appears to move due to the Earth's motion around the Sun. The dates in this visualization are based on an ephemeris assuming a launch on January 20, 2007. The satellites are represented by the colors: red=P1, green=P2, cyan=P3, blue=P4, magenta=P5.
Completed 2006-12-11
SOHO/MDI's 'Window' Through …
Title SOHO/MDI's 'Window' Through the Sun
Abstract Using the mathematical techniques, the SOHO/MDI view of the front side of the Sun can be processed to reveal features on the far side of the Sun.
Completed 2004-01-21
SOHO/MDI's 'Window' Through …
Title SOHO/MDI's 'Window' Through the Sun
Abstract Using the mathematical techniques, the SOHO/MDI view of the front side of the Sun can be processed to reveal features on the far side of the Sun.
Completed 2004-01-21
SOHO/MDI's 'Window' Through …
Title SOHO/MDI's 'Window' Through the Sun
Abstract Using the mathematical techniques, the SOHO/MDI view of the front side of the Sun can be processed to reveal features on the far side of the Sun.
Completed 2004-01-21
SOHO/MDI's 'Window' Through …
Title SOHO/MDI's 'Window' Through the Sun
Abstract Using the mathematical techniques, the SOHO/MDI view of the front side of the Sun can be processed to reveal features on the far side of the Sun.
Completed 2004-01-21
SOHO/MDI's 'Window' Through …
Title SOHO/MDI's 'Window' Through the Sun
Abstract Using the mathematical techniques, the SOHO/MDI view of the front side of the Sun can be processed to reveal features on the far side of the Sun.
Completed 2004-01-21
SOHO/MDI's 'Window' Through …
Title SOHO/MDI's 'Window' Through the Sun
Abstract Using the mathematical techniques, the SOHO/MDI view of the front side of the Sun can be processed to reveal features on the far side of the Sun.
Completed 2004-01-21
Polar Visible Aurora: Normal …
Title Polar Visible Aurora: Normal Solar Wind Conditions on November 13, 1999 over the North Pole
Abstract On May 11, 1999, the solar wind that blows constantly from the Sun virtually disappeared. Dropping to a small fraction of its normal density and to half its normal speed, the solar wind died down enough to allow physicists to observe particles flowing directly from the Sun's corona to Earth. This severe change in the solar wind also drastically changed the shape of Earth's magnetic field and produced a rare auroral display at Earth's North Pole.
Completed 1999-12-08
Aqua MODIS Sea Surface Tempe …
Title Aqua MODIS Sea Surface Temperature Progression during Hurricane Katrina
Abstract The Aqua satellite orbits the Earth every 99 minutes in a polar, sun-synchronous orbit. The MODIS instrument on Aqua observes reflected light from the Earth in 36 spectral frequencies. These observations can be processed to show many properties of the Earth's surface, from temperature and phytoplankton measurements near the surface of the ocean to fire occurrences and land cover characteristics on the land surface. This animation shows MODIS sea surface temperature data from about 4 days of individual Aqua orbits. Sea surface temperature can only be measured by MODIS in ocean regions that are free of both clouds and sun glint, the bright band of specular reflection in the center of each granule. For this animation the data is accumulated and so builds up a complete picture of the surface of the Earth except around the South Pole, which is in darkness during the entire 4-day period.
Completed 2006-04-07
Aqua MODIS Sea Surface Tempe …
Title Aqua MODIS Sea Surface Temperature Progression during Hurricane Katrina
Abstract The Aqua satellite orbits the Earth every 99 minutes in a polar, sun-synchronous orbit. The MODIS instrument on Aqua observes reflected light from the Earth in 36 spectral frequencies. These observations can be processed to show many properties of the Earth's surface, from temperature and phytoplankton measurements near the surface of the ocean to fire occurrences and land cover characteristics on the land surface. This animation shows MODIS sea surface temperature data from about 4 days of individual Aqua orbits. Sea surface temperature can only be measured by MODIS in ocean regions that are free of both clouds and sun glint, the bright band of specular reflection in the center of each granule. For this animation the data is accumulated and so builds up a complete picture of the surface of the Earth except around the South Pole, which is in darkness during the entire 4-day period.
Completed 2006-04-07
Average Total-sky Outgoing L …
Title Average Total-sky Outgoing Longwave Flux (WMS)
Abstract The Earth's climate is determined by energy transfer from the sun to the Earth's land, oceans, and atmosphere. As the Earth rotates, the sun lights up only part of the Earth at a time, and some of that incoming solar energy is reflected and some is absorbed, depending on type of area it lights. The average amount of reflection and absorption is critical to the climate, because the absorbed energy heats up the Earth until it is radiated away as thermal radiation. This animation shows the monthly average outgoing longwave radiation from July, 2002 through June, 2004 as measured by the CERES instrument. This is the thermal radiation given off by the warm Earth. The Earth's rotation and the movement of warm air from the equator to the poles make the Earth roughly uniform in temperature. The most visible features are the cold poles in winter and the cold clouds along the equator which trap the outgoing thermal radiation.
Completed 2005-02-01
Average Total-sky Outgoing L …
Title Average Total-sky Outgoing Longwave Flux (WMS)
Abstract The Earth's climate is determined by energy transfer from the sun to the Earth's land, oceans, and atmosphere. As the Earth rotates, the sun lights up only part of the Earth at a time, and some of that incoming solar energy is reflected and some is absorbed, depending on type of area it lights. The average amount of reflection and absorption is critical to the climate, because the absorbed energy heats up the Earth until it is radiated away as thermal radiation. This animation shows the monthly average outgoing longwave radiation from July, 2002 through June, 2004 as measured by the CERES instrument. This is the thermal radiation given off by the warm Earth. The Earth's rotation and the movement of warm air from the equator to the poles make the Earth roughly uniform in temperature. The most visible features are the cold poles in winter and the cold clouds along the equator which trap the outgoing thermal radiation.
Completed 2005-02-01
Global Surface Latent Heat F …
Title Global Surface Latent Heat Flux during Hurricane Frances (WMS)
Abstract As the Sun's energy reaches the Earth, it is either reflected, absorbed by the clouds, or absorbed by the Earth's surface. The part absorbed by the surface heats the Earth, which causes surface water to evaporate to the air, particularly over oceans or moist land. Similarly, a cold surface causes water to condense from the air onto the land or ocean. Latent heat flux is the amount of energy moving from the surface to the air due to evapolation (positive values) or from the air to the land due to condensation (negative values). This animation shows the latent heat flux for the whole globe from September 1, 2004, through September 5, 2004, during the period of Hurricane Frances in the western Atlantic Ocean and Typhoon Songda in the western Pacific Ocean. The animation clearly shows the evaporation over land only during the heat of the day, while the evaporation over the ocean is continuous throughout the day. The highest positive latent heat flux occurs during hurricanes and typhoons, as these events are powered by the movement of heat energy from the warm ocean to the atmosphere, seen here in Hurricane Frances and Typhoon Songda. Significant negative latent heat flux is somewhat rare and occurs over the ocean only during certain configurations of air and surface conditions.
Completed 2005-07-25
Global Surface Latent Heat F …
Title Global Surface Latent Heat Flux during Hurricane Frances (WMS)
Abstract As the Sun's energy reaches the Earth, it is either reflected, absorbed by the clouds, or absorbed by the Earth's surface. The part absorbed by the surface heats the Earth, which causes surface water to evaporate to the air, particularly over oceans or moist land. Similarly, a cold surface causes water to condense from the air onto the land or ocean. Latent heat flux is the amount of energy moving from the surface to the air due to evapolation (positive values) or from the air to the land due to condensation (negative values). This animation shows the latent heat flux for the whole globe from September 1, 2004, through September 5, 2004, during the period of Hurricane Frances in the western Atlantic Ocean and Typhoon Songda in the western Pacific Ocean. The animation clearly shows the evaporation over land only during the heat of the day, while the evaporation over the ocean is continuous throughout the day. The highest positive latent heat flux occurs during hurricanes and typhoons, as these events are powered by the movement of heat energy from the warm ocean to the atmosphere, seen here in Hurricane Frances and Typhoon Songda. Significant negative latent heat flux is somewhat rare and occurs over the ocean only during certain configurations of air and surface conditions.
Completed 2005-07-25
SOHO/MDI Investigates Solar …
Title SOHO/MDI Investigates Solar Flows Under Sunspots
Abstract SOHO/MDI performs a 'sonogram' of the sun, revealing the subsurface temperature profile around a sunspot. Red isosurfaces denote regions where the sound speed (and temperature) are higher than average while blue isosurfaces directly under the spot illustrate where the sound speed (and temperature) are lower than average.
Completed 2001-08-31
SOHO/MDI Investigates Solar …
Title SOHO/MDI Investigates Solar Flows Under Sunspots
Abstract SOHO/MDI performs a 'sonogram' of the sun, revealing the subsurface temperature profile around a sunspot. Red isosurfaces denote regions where the sound speed (and temperature) are higher than average while blue isosurfaces directly under the spot illustrate where the sound speed (and temperature) are lower than average.
Completed 2001-08-31
SOHO/MDI Investigates Solar …
Title SOHO/MDI Investigates Solar Flows Under Sunspots
Abstract SOHO/MDI performs a 'sonogram' of the sun, revealing the subsurface temperature profile around a sunspot. Red isosurfaces denote regions where the sound speed (and temperature) are higher than average while blue isosurfaces directly under the spot illustrate where the sound speed (and temperature) are lower than average.
Completed 2001-08-31
SOHO/MDI Investigates Solar …
Title SOHO/MDI Investigates Solar Flows Under Sunspots
Abstract SOHO/MDI performs a 'sonogram' of the sun, revealing the subsurface temperature profile around a sunspot. Red isosurfaces denote regions where the sound speed (and temperature) are higher than average while blue isosurfaces directly under the spot illustrate where the sound speed (and temperature) are lower than average.
Completed 2001-08-31
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1-50 of 112