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Spitzer and Hubble Capture E
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| Title |
Spitzer and Hubble Capture Evolving Planetary Systems |
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Aura/OMI Ozone Hole from Sep
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| Title |
Aura/OMI Ozone Hole from September 12, 2004 to November 15, 2004 with Polar Vortex Demarced |
| Abstract |
Data from NASA satellites establishes a 40-year record of stratospheric ozone measurements. The stratospheric ozone layer shields life on Earth from harmful solar ultraviolet (UV) radiation. Research shows that excess exposure to UV radiation causes skin cancer and eye problems and impacts plant growth. Global stratospheric ozone has decreased by 3 percent globally between 1980 and 2000 and has thinned by 50 percent over Antarctica in winter and spring. Depletion of the ozone layer allows more UV radiation to reach the Earth's surface. This animation shows the ozone layer blocking harmful UV radiation from the Earth's surface. The hole in the ozone is seen in purple. The location, size, and shape of the polar vortex is derived from potential vorticity data, PV. The PV, shown in white at 550 degrees Kelvin, is an atmospheric regional event that isolates polar air from the air at lower latitudes, producing conditions favorable for wintertime polar ozone depletion. The animation shows that most of the low-temperature and chemically-perturbed region is confined within the polar vortex during the Antarctic winter. |
| Completed |
2004-11-30 |
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Aura/OMI Ozone Hole from Sep
…
| Title |
Aura/OMI Ozone Hole from September 12, 2004 to November 15, 2004 with Polar Vortex Demarced |
| Abstract |
Data from NASA satellites establishes a 40-year record of stratospheric ozone measurements. The stratospheric ozone layer shields life on Earth from harmful solar ultraviolet (UV) radiation. Research shows that excess exposure to UV radiation causes skin cancer and eye problems and impacts plant growth. Global stratospheric ozone has decreased by 3 percent globally between 1980 and 2000 and has thinned by 50 percent over Antarctica in winter and spring. Depletion of the ozone layer allows more UV radiation to reach the Earth's surface. This animation shows the ozone layer blocking harmful UV radiation from the Earth's surface. The hole in the ozone is seen in purple. The location, size, and shape of the polar vortex is derived from potential vorticity data, PV. The PV, shown in white at 550 degrees Kelvin, is an atmospheric regional event that isolates polar air from the air at lower latitudes, producing conditions favorable for wintertime polar ozone depletion. The animation shows that most of the low-temperature and chemically-perturbed region is confined within the polar vortex during the Antarctic winter. |
| Completed |
2004-11-30 |
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Aura/OMI Ozone Hole from Sep
…
| Title |
Aura/OMI Ozone Hole from September 12, 2004 to November 15, 2004 with Polar Vortex Demarced |
| Abstract |
Data from NASA satellites establishes a 40-year record of stratospheric ozone measurements. The stratospheric ozone layer shields life on Earth from harmful solar ultraviolet (UV) radiation. Research shows that excess exposure to UV radiation causes skin cancer and eye problems and impacts plant growth. Global stratospheric ozone has decreased by 3 percent globally between 1980 and 2000 and has thinned by 50 percent over Antarctica in winter and spring. Depletion of the ozone layer allows more UV radiation to reach the Earth's surface. This animation shows the ozone layer blocking harmful UV radiation from the Earth's surface. The hole in the ozone is seen in purple. The location, size, and shape of the polar vortex is derived from potential vorticity data, PV. The PV, shown in white at 550 degrees Kelvin, is an atmospheric regional event that isolates polar air from the air at lower latitudes, producing conditions favorable for wintertime polar ozone depletion. The animation shows that most of the low-temperature and chemically-perturbed region is confined within the polar vortex during the Antarctic winter. |
| Completed |
2004-11-30 |
|
Aura/OMI Ozone Hole from Sep
…
| Title |
Aura/OMI Ozone Hole from September 12, 2004 to November 15,2004 |
| Abstract |
Data from NASA satellites establishes a 40 year record of stratospheric ozone measurements. The stratospheric ozone layer shields life on Earth from harmful solar ultraviolet (UV) radiation. Research shows that excess exposure to UV radiation causes skin cancer and eye problems and impacts plant growth. Global stratospheric ozone has decreased by 3 percent globally between 1980 and 2000 and has thinned by 50 percent over Antarctica in winter and spring. Depletion of the ozone layer allows more UV radiation to reach the Earth's surface. This animation shows the ozone layer blocking harmful UV radiation from the Earth's surface. The hole in the ozone is seen in purple. |
| Completed |
2004-11-30 |
|
Aura/OMI Ozone Hole from Sep
…
| Title |
Aura/OMI Ozone Hole from September 12, 2004 to November 15,2004 |
| Abstract |
Data from NASA satellites establishes a 40 year record of stratospheric ozone measurements. The stratospheric ozone layer shields life on Earth from harmful solar ultraviolet (UV) radiation. Research shows that excess exposure to UV radiation causes skin cancer and eye problems and impacts plant growth. Global stratospheric ozone has decreased by 3 percent globally between 1980 and 2000 and has thinned by 50 percent over Antarctica in winter and spring. Depletion of the ozone layer allows more UV radiation to reach the Earth's surface. This animation shows the ozone layer blocking harmful UV radiation from the Earth's surface. The hole in the ozone is seen in purple. |
| Completed |
2004-11-30 |
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Four Years of Saturn
| Title |
Four Years of Saturn |
| Explanation |
Saturn and [ http://antwrp.gsfc.nasa.gov/apod/ap040117.html ] its magnificent ring system [ http://www2.jpl.nasa.gov/saturn/back.html ] can offer even casual astronomers the most memorable of telescopic sights. Wandering between Leo and Cancer this month [ http://skytonight.com/observing/home/April_podcast.html ], a bright Saturn is [ http://www.nineplanets.org/saturn.html ] well placed for viewing in evening skies [ http://soc.jpl.nasa.gov/viewing.cfm ]. But from our earthbound perspective, the tilt of Saturn's rings does change with time [ http://antwrp.gsfc.nasa.gov/apod/ap030405.html ]. In 1995 and 1996 [ http://hubblesite.org/newscenter/archive/releases/2007/13/ video/a/ ] the broad rings were edge-on and nearly invisible, gradually opening to a spectacular maximum tilt [ http://hubblesite.org/newscenter/archive/releases/2007/13/ video/c/ ] of about 27 degrees by 2003. This frame from a series of Saturn [ http://www.avertedimagination.com/img_pages/ saturn_04_07.html ] images beginning a year later, in 2004, and ending just last month shows the steady decrease in apparent tilt as the rings head toward another edge-on presentation in 2009. Saturn's south pole is toward the bottom. Click on the picture to view the sharp, color gif movie. |
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Red Plankton in the Arabian
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nasa, nasaimageofthedaygalle
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In the Arabian Sea, sunlight
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PIA04369
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-10-02 |
| creator |
NASA -- Image courtesy NASA/GSFC/LaRC/JPL, www-misr.jpl.nasa.gov/ MISR Team. Text by Clare Averill (Raytheon/JPL) and Dr. Patria Viva F. Banzon (University of Miami). |
| identifier |
PIA04369 |
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Red Plankton in the Arabian
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PIA04369
Sol (our sun)
Multi-angle Imaging SpectroR
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| Title |
Red Plankton in the Arabian Sea |
| Original Caption Released with Image |
. The Multi-angle Imaging SpectroRadiometer observes the daylit Earth continuously and every 9 days views the entire globe between 82° north and 82° south latitude. These data products were generated from a portion of the imagery acquired during Terra orbit 25483. The still image panels cover an area of about 240 kilometers x 290 kilometers, and utilize Local Mode data from within blocks 71 to 73 and within World Reference System-2 path 155. MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Office of Earth Science, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is a division of the California Institute of Technology., In the Arabian Sea, sunlight and nutrients has fueled a startling occurrence of colorful phytoplankton and bacterial assemblages, which is captured in these natural color images from NASA's Multi-angle Imaging SpectroRadiometer (MISR). Several areas exhibit an unmistakably reddish hue, particularly in the upper portion of the images. The image set is centered along the Tropic of Cancer, about 400 kilometers east of Muscat, Oman, and was acquired on October 2, 2004. A view from MISR's nadir (directly downward viewing) camera is provided on the left, while the two smaller images at the upper and lower right are from MISR's 60-degree forward and backward pointing cameras, respectively. The Arabian Sea is an unusual part of the world's oceans because it is surrounded by land masses from three sides, and light levels in the region are strongly influenced by cloud cover generated by the Indian monsoons. Phytoplankton concentrations in the Arabian Sea tend to be highest during September and October, towards the end of the summer monsoon. The offshore drift of surface waters and their replacement by deeper, nutrient-rich waters means that the Arabian Sea is very productive, but such fertilization also sometimes results in copious phytoplankton production and oxygen depletion of the subsurface waters. Although red phytoplankton fluorescences have been associated with the low oxygen concentrations in the intermediate and deep waters of the Arabian Sea, the red pigment in this scene may instead be related to the dynamic processes of plankton grazing and decomposition. Multiple observation angles allow the color of surface ocean waters to be studied in greater detail, and provides a method to observe regions that can not be examined by satellite instruments that view nadir only, in cases where the nadir view is affected by sun glint. In this case, the ocean color in the lower right-hand corner is discernible at 60-degrees backward but not at nadir. Multiple angles also enable the observation of ship and cloud motion. The movement of several ships across the scene is illustrated in an animation. The oblique imagery used in this image set is part of the Local Mode data acquired during the Unified Aerosol Experiment United Arab Emirates (UAE2) field campaign |
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