|
|
Six Annotated Datasets Pull
…
| Title |
Six Annotated Datasets Pull Away from a Single Globe |
| Completed |
1999-11-10 |
|
Single Globe Methane Dataset
| Title |
Single Globe Methane Dataset |
| Completed |
1999-11-10 |
|
Assimilation of N2O in the U
…
| Title |
Assimilation of N2O in the Upper Atmosphere Using a Kalman Filter: Error Correlation |
| Abstract |
This series of animations shows assimilation of N2O in the upper atmosphere using observations from the Cryogenic Limb Etalon Spectrometer (CLAES) on the Upper Atmosphere Research Satellite (UARS). Winds were provided by the Goddard EOS Data Assimilation System (GEOS-DAS). Flow is at the 850K isentropic level. N2O mixing ratio is expressed in parts per billion volume (ppbv). |
| Completed |
1996-03-22 |
|
Chemical Model Animation of
…
| Title |
Chemical Model Animation of CFCs Releasing Chlorine to Form Reservoir Gases |
| Abstract |
Most stratospheric chlorine comes from man-made compounds called chlorofluorocarbons or CFCs. CFCs, widely used in refrigerators and air conditioners, are quite harmless and non-reactive in the lower atmosphere. Carried slowly upward by the earth's winds, they can survive the 5 year journey to the upper stratosphere. Here, above most of the ozone layer, the sun's ultraviolet radiation breaks down the CFCs into the more reactive chlorine compounds that destroy ozone. Chlorine can react with methane to form hydrogen chloride. Chlorine can also react with ozone forming the radical chlorine monoxide. Chlorine monoxide then combines with the radical nitrogen dioxide to form stable chlorine nitrate. Chlorine nitrate and hydrogen chloride are called reservoir gases for the chlorine radical. These reservoir gases usually contain more than ninety percent of the chlorine in the lower stratosphere. |
| Completed |
1999-04-09 |
|
Chlorine Nitrate over the Ar
…
| Title |
Chlorine Nitrate over the Arctic from CLAES (2/12/93 - 3/16/93) |
| Abstract |
Key to understanding the chlorine chemistry in the polar stratosphere is the measurement of polar stratospheric clouds, chlorine monoxide, and the reservoir gas chlorine nitrate. Chlorine nitrate has been measured by the Cryogen Limb Array Etalon Spectrometer, CLAES. CLAES makes measurements by looking at infrared emission from cloud particles and trace gases. CLAES measurements help to show that the polar stratospheric clouds which form in the cold Arctic stratosphere have converted most of the chlorine nitrate into the radical chlorine monoxide. In 1992, UARS measurements showed conclusively that an an Arctic ozone hole is beginning to form. |
| Completed |
1999-04-09 |
|
Chlorine Nitrate from CLAES
…
| Title |
Chlorine Nitrate from CLAES and Chlorine Monoxide from MLS over the Arctic (2/12/93 - 3/10/93) |
| Abstract |
Key to understanding the chlorine chemistry in the polar stratosphere is the measurement of polar stratospheric clouds, chlorine monoxide, and the reservoir gas chlorine nitrate. Chlorine nitrate has been measured by CLAES and chlorine monoxide by MLS. The CLAES and MLS measurements together help to show that the polar stratospheric clouds which form in the cold Arctic stratosphere have converted most of the chlorine nitrate into the radical chlorine monoxide. In 1992, UARS measurements showed conclusively that an an Arctic ozone hole is beginning to form. |
| Completed |
1999-04-09 |
|
UARS Soundtrack
| Title |
UARS Soundtrack |
| Abstract |
This entry represents the music track for the UARS video. |
| Completed |
1999-04-09 |
|
UARS Video Credits
| Title |
UARS Video Credits |
| Completed |
1999-04-09 |
|
Various Film Clips from the
…
| Title |
Various Film Clips from the UARS Video |
| Completed |
1999-04-09 |
|
Viewing the MLS Instrument o
…
| Title |
Viewing the MLS Instrument on UARS |
| Abstract |
The Microwave Limb Sounder (MLS) measures microwave emission from ozone and chlorine monoxide, a major ozone destroying radical. |
| Completed |
1999-04-09 |
|
Viewing the MLS Instrument o
…
| Title |
Viewing the MLS Instrument on UARS |
| Abstract |
The Microwave Limb Sounder (MLS) measures microwave emission from ozone and chlorine monoxide, a major ozone destroying radical. |
| Completed |
1999-04-09 |
|
Ozone and Chlorine Monoxide
…
| Title |
Ozone and Chlorine Monoxide over Antarctica from MLS (1/12/93 - 9/17/93) |
| Abstract |
The Microwave Limb Sounder (MLS) measures microwave emission from ozone and chlorine monoxide, a major ozone destroying radical. Right after UARS was launched, MLS began to measure large concentrations of chlorine monoxide over the south pole. These dramatic images clearly showed the extent of the south polar ozone destruction and confirmed the connection between man-made chlorine and the formation to the Antarctic ozone hole. Why is so much chlorine monoxide found over the Antarctic? UARS measurements have confirmed that CFCs enter the stratosphere in the tropics. As they rise above the ozone layer, ultraviolet molecules release chlorine, which then can react with methane to form hydrogen chloride. Chlorine can also react with ozone forming the radical chlorine monoxide. Chlorine monoxide then combines with the radical nitrogen dioxide to form stable chlorine nitrate. Chlorine nitrate and hydrogen chloride are called reservoir gases for the chlorine radical. These reservoir gases usually contain more than ninety percent of the chlorine in the lower stratosphere. |
| Completed |
1999-04-09 |
|
Graph Showing Ozone Decreasi
…
| Title |
Graph Showing Ozone Decreasing by 5% from 1979 to 1993 |
| Abstract |
From 1979 to 1993, the average amount of ozone in the stratosphere has decreased by about 5%. |
| Completed |
1999-04-09 |
|
CLAES Measurements of CFC-12
…
| Title |
CLAES Measurements of CFC-12 in the Stratosphere |
| Abstract |
CLAES made the first global measurements of CFCs in the stratosphere. CFCs enter the stratosphere through upwelling in the tropics. The CFCs decrease with height as they are broken down by UV radiation. CFCs are the major source of stratospheric chlorine. Red indicates large amounts of CFC-12. |
| Completed |
1999-04-09 |
|
Terra 9-Globe Dataset
| Title |
Terra 9-Globe Dataset |
| Abstract |
Terra 9-globe dataset animation: datasets (left to right, top to bottom): biosphere (SeaStar/SeaWiFS), water vapor (GOES 9 & 10, Meteosat, and GMS-5), temperature (Globe), fires (AVHRR), clouds (GOES 9 & 10, Meteosat, and GMS-5), methane (UARS), aerosols (TOMS), radiant energy (Globe), vegetation index anomalies (NDVI) |
| Completed |
1999-11-10 |
|
Terra 9-Globe Dataset
| Title |
Terra 9-Globe Dataset |
| Abstract |
Terra 9-globe dataset animation: datasets (left to right, top to bottom): biosphere (SeaStar/SeaWiFS), water vapor (GOES 9 & 10, Meteosat, and GMS-5), temperature (Globe), fires (AVHRR), clouds (GOES 9 & 10, Meteosat, and GMS-5), methane (UARS), aerosols (TOMS), radiant energy (Globe), vegetation index anomalies (NDVI) |
| Completed |
1999-11-10 |
|
Viewing the PEM Instrument o
…
| Title |
Viewing the PEM Instrument on UARS |
| Abstract |
UARS measures the flux of energetic particles from space using the Particle Environment Monitor, PEM. These high energy particles cause ozone depletion at high altitudes by producing nitrogen and hydrogen radicals. |
| Completed |
1999-04-09 |
|
Viewing the PEM Instrument o
…
| Title |
Viewing the PEM Instrument on UARS |
| Abstract |
UARS measures the flux of energetic particles from space using the Particle Environment Monitor, PEM. These high energy particles cause ozone depletion at high altitudes by producing nitrogen and hydrogen radicals. |
| Completed |
1999-04-09 |
|
UARS Looking at the Limb
| Title |
UARS Looking at the Limb |
| Completed |
1999-04-09 |
|
|
