Earth Science Gallery
2002 EARTH SCIENCE VIDEOTAPES
Tape Title
Record ID
Date Produced
TRT:
Synopsis
OTHER FACTORS MAY AFFECT OZONE RECOVERY
G02-043 6/4/02 00:06:12 Those looking for an ozone recovery in the next few decades from chlorofluorocarbon (CFC) policy measures, will be waiting a bit longer according to new research. A NASA study reveals that the ozone throughout the world - not just the poles - is more affected by greenhouse gases than previously thought. By the 2030s greenhouse gases could surpass CFCs as the main cause of total ozone loss. The study came to this conclusion by isolating the effects of CFCs doing ozone damage from the impacts of greenhouse gases and their subsequent climate change possibilities.
TAPE CONTENTS:
ITEM (1): Global View of The Ozone Layer - The key is separating the effects of man-made pollutants like chlorofluorocarbons (CFCs) from naturally occurring greenhouse gases like methane and carbon dioxide that trap heat. These gases may delay ozone recovery by influencing temperature changes and by increasing water vapor in the upper atmosphere where most of the ozone resides. Shown is the ozone 'hole' over the Antarctic pole in 2001. Purple indicates very low levels of ozone and red colors show higher levels. Data was collected by NASA's Total Ozone Mapping Spectrometer (TOMS) instrument on the Earth Probe satellite.
Credit: NASA
ITEM (2): Local Effects of Delayed Recovery - With news that the ozone won't be recovering as quickly as possible with the additional influence of greenhouse gases, you'll have to keep slathering on the sunscreen. Low levels of ozone over major cities create an environment of higher ultraviolet (UV) rays that can lead to increased sunburns and other health hazards. The TOMS instrument on the Earth Probe spacecraft also contributed to this view.
Credit: NASA
ITEM (3): The Water Vapor Menace - Increased emissions of naturally occurring methane get transformed into water in the upper atmosphere where it breaks down into ozone-destroying molecules. It also affects climate change; along with carbon dioxide, methane creates a greenhouse effect by trapping heat in the atmosphere before it can escape out into space. Warming in the lower atmosphere can alter atmospheric circulation triggering a complicated series of processes that push the produced water vapor into the upper atmosphere where it attacks the ozone.
Credit: NASA
ITEM (4): Earth Probe/TOMS Spacecraft - Since 1996 the Total Ozone Mapping Spectrometer (TOMS) instrument on the Earth Probe spacecraft has been monitoring ozone levels from space. The sensor flies in a polar orbit, crossing the equator every day at noon local time. TOMS combines measurements of total ozone and cloud cover with solar radiation escaping from the top of the atmosphere to estimate the amount of UV radiation reaching Earth's surface. NASA plans to operate the spacecraft through 2004 to overlap with the Aura spacecraft, set to launch that year.
Credits: NASA
ITEM (5): Next Generation Spacecraft - Two great observatories, Terra and Aqua, are contributing to our knowledge of Earth systems and processes like climate change. Terra, launched in 1999, shares an instrument called CERES with the recently launched Aqua satellite. The goal of CERES is to see how much heat is emitted and reflected by Earth on a broad scale through clouds to see how the Earth maintains its temperature balance. Aqua houses an instrument called the Advanced Microwave Scanning Radiometer (AMSR-E) that tracks the greenhouse gas water vapor through the Earth's water cycle.
Credits: NASA
NOTE: The material advertised on this page is a "Video File" and is strictly recommended for the media and production companies. This is NOT a finished production but does contain some narration.
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Earth Science Gallery
2002 EARTH SCIENCE VIDEOTAPES |
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|---|---|---|---|---|
Tape Title | Record ID | Date Produced | TRT: | Synopsis |
| OTHER FACTORS MAY AFFECT OZONE RECOVERY | G02-043 | 6/4/02 | 00:06:12 | Those looking for an ozone recovery in the next few decades from chlorofluorocarbon (CFC) policy measures, will be waiting a bit longer according to new research. A NASA study reveals that the ozone throughout the world - not just the poles - is more affected by greenhouse gases than previously thought. By the 2030s greenhouse gases could surpass CFCs as the main cause of total ozone loss. The study came to this conclusion by isolating the effects of CFCs doing ozone damage from the impacts of greenhouse gases and their subsequent climate change possibilities. |
TAPE CONTENTS: |
||||
| ITEM (1): Global View of The Ozone Layer - The key is separating the effects of man-made pollutants like chlorofluorocarbons (CFCs) from naturally occurring greenhouse gases like methane and carbon dioxide that trap heat. These gases may delay ozone recovery by influencing temperature changes and by increasing water vapor in the upper atmosphere where most of the ozone resides. Shown is the ozone 'hole' over the Antarctic pole in 2001. Purple indicates very low levels of ozone and red colors show higher levels. Data was collected by NASA's Total Ozone Mapping Spectrometer (TOMS) instrument on the Earth Probe satellite. Credit: NASA | ||||
| ITEM (2): Local Effects of Delayed Recovery - With news that the ozone won't be recovering as quickly as possible with the additional influence of greenhouse gases, you'll have to keep slathering on the sunscreen. Low levels of ozone over major cities create an environment of higher ultraviolet (UV) rays that can lead to increased sunburns and other health hazards. The TOMS instrument on the Earth Probe spacecraft also contributed to this view. Credit: NASA | ||||
| ITEM (3): The Water Vapor Menace - Increased emissions of naturally occurring methane get transformed into water in the upper atmosphere where it breaks down into ozone-destroying molecules. It also affects climate change; along with carbon dioxide, methane creates a greenhouse effect by trapping heat in the atmosphere before it can escape out into space. Warming in the lower atmosphere can alter atmospheric circulation triggering a complicated series of processes that push the produced water vapor into the upper atmosphere where it attacks the ozone. Credit: NASA | ||||
| ITEM (4): Earth Probe/TOMS Spacecraft - Since 1996 the Total Ozone Mapping Spectrometer (TOMS) instrument on the Earth Probe spacecraft has been monitoring ozone levels from space. The sensor flies in a polar orbit, crossing the equator every day at noon local time. TOMS combines measurements of total ozone and cloud cover with solar radiation escaping from the top of the atmosphere to estimate the amount of UV radiation reaching Earth's surface. NASA plans to operate the spacecraft through 2004 to overlap with the Aura spacecraft, set to launch that year. Credits: NASA | ||||
| ITEM (5): Next Generation Spacecraft - Two great observatories, Terra and Aqua, are contributing to our knowledge of Earth systems and processes like climate change. Terra, launched in 1999, shares an instrument called CERES with the recently launched Aqua satellite. The goal of CERES is to see how much heat is emitted and reflected by Earth on a broad scale through clouds to see how the Earth maintains its temperature balance. Aqua houses an instrument called the Advanced Microwave Scanning Radiometer (AMSR-E) that tracks the greenhouse gas water vapor through the Earth's water cycle. Credits: NASA | ||||
NOTE: The material advertised on this page is a "Video File" and is strictly recommended for the media and production companies. This is NOT a finished production but does contain some narration.
[HOME] [Return to the Earth Science Catalog] [How to order videotapes]