The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica
Accurate, detailed maps of total ozone were not available until the launch of the Total Ozone Mapping Spectrometer (TOMS) in late 1978. However, the Scanning Radiometer (SR), an instrument on board the NOAA series satellites during the 1970s, had a visible channel that overlapped closely with the Ch...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19950004714 2023-05-15T13:42:51+02:00 The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica Boime, Robert D. Gruber, Arnold Warren, Steven G. Unclassified, Unlimited, Publicly available Apr 1, 1994 application/pdf http://hdl.handle.net/2060/19950004714 unknown Document ID: 19950004714 Accession ID: 95N11127 http://hdl.handle.net/2060/19950004714 No Copyright CASI METEOROLOGY AND CLIMATOLOGY NASA. Goddard Space Flight Center, Ozone in the Troposphere and Stratosphere, Part 2; p 938-941 1994 ftnasantrs 2015-03-15T03:40:07Z Accurate, detailed maps of total ozone were not available until the launch of the Total Ozone Mapping Spectrometer (TOMS) in late 1978. However, the Scanning Radiometer (SR), an instrument on board the NOAA series satellites during the 1970s, had a visible channel that overlapped closely with the Chappuis absorption band of ozone. We are investigating whether data from the SR can be used to map Antarctic ozone prior to 1978. The method is being developed with 1980s data from the Advanced Very High Resolution Radiometer (AVHRR), which succeeded the SR on the NOAA polar-orbiting satellites. Visible-derived total ozone maps can then be compared able on the NOAA satellites, which precludes the use of a differential absorption technique to measure ozone. Consequently, our method works exclusively over scenes whose albedos are large and unvarying, i.e. scenes that contain ice sheets and/or uniform cloud-cover. Initial comparisons of time series for October-December 1987 at locations in East Antarctica show that the visible absorption by ozone in measurable and that the technique may be usable for the 1970s, but with much less accuracy than TOMS. This initial test assumes that clouds, snow, and ice all reflect the same percentage of visible light towards the satellite, regardless of satellite position or environmental conditions. This assumption is our greatest source of error. To improve the accuracy of ozone retrievals, realistic anisotropic reflectance factors are needed, which are strongly influenced by cloud and snow surface features. Other/Unknown Material Antarc* Antarctic Antarctica East Antarctica NASA Technical Reports Server (NTRS) Antarctic East Antarctica |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
METEOROLOGY AND CLIMATOLOGY |
spellingShingle |
METEOROLOGY AND CLIMATOLOGY Boime, Robert D. Gruber, Arnold Warren, Steven G. The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica |
topic_facet |
METEOROLOGY AND CLIMATOLOGY |
description |
Accurate, detailed maps of total ozone were not available until the launch of the Total Ozone Mapping Spectrometer (TOMS) in late 1978. However, the Scanning Radiometer (SR), an instrument on board the NOAA series satellites during the 1970s, had a visible channel that overlapped closely with the Chappuis absorption band of ozone. We are investigating whether data from the SR can be used to map Antarctic ozone prior to 1978. The method is being developed with 1980s data from the Advanced Very High Resolution Radiometer (AVHRR), which succeeded the SR on the NOAA polar-orbiting satellites. Visible-derived total ozone maps can then be compared able on the NOAA satellites, which precludes the use of a differential absorption technique to measure ozone. Consequently, our method works exclusively over scenes whose albedos are large and unvarying, i.e. scenes that contain ice sheets and/or uniform cloud-cover. Initial comparisons of time series for October-December 1987 at locations in East Antarctica show that the visible absorption by ozone in measurable and that the technique may be usable for the 1970s, but with much less accuracy than TOMS. This initial test assumes that clouds, snow, and ice all reflect the same percentage of visible light towards the satellite, regardless of satellite position or environmental conditions. This assumption is our greatest source of error. To improve the accuracy of ozone retrievals, realistic anisotropic reflectance factors are needed, which are strongly influenced by cloud and snow surface features. |
format |
Other/Unknown Material |
author |
Boime, Robert D. Gruber, Arnold Warren, Steven G. |
author_facet |
Boime, Robert D. Gruber, Arnold Warren, Steven G. |
author_sort |
Boime, Robert D. |
title |
The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica |
title_short |
The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica |
title_full |
The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica |
title_fullStr |
The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica |
title_full_unstemmed |
The use of visible-channel data from NOAA satellites to measure total ozone amount over Antarctica |
title_sort |
use of visible-channel data from noaa satellites to measure total ozone amount over antarctica |
publishDate |
1994 |
url |
http://hdl.handle.net/2060/19950004714 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
CASI |
op_relation |
Document ID: 19950004714 Accession ID: 95N11127 http://hdl.handle.net/2060/19950004714 |
op_rights |
No Copyright |
_version_ |
1766173587303038976 |