Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone
Small areas of sharply reduced ozone density appear frequently in the maps produced from polar region total ozone mapping spectrometer (TOMS) data. These mini-holes are of the order of 1000 km in extent with a lifetime of a few days. On the basis of measurements from ground-based instruments, balloo...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19920072021 2023-05-15T13:11:23+02:00 Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone Torres, O. Ahmad, Z. Herman, J. R. Unclassified, Unlimited, Publicly available Aug 20, 1992 http://ntrs.nasa.gov/search.jsp?R=19920072021 unknown http://ntrs.nasa.gov/search.jsp?R=19920072021 Accession ID: 92A54645 Copyright Other Sources 46 Journal of Geophysical Research; 97; D12,; 13 1992 ftnasantrs 2012-02-15T19:39:38Z Small areas of sharply reduced ozone density appear frequently in the maps produced from polar region total ozone mapping spectrometer (TOMS) data. These mini-holes are of the order of 1000 km in extent with a lifetime of a few days. On the basis of measurements from ground-based instruments, balloon-borne ozonesondes, and simultaneous measurements of aerosol and ozone concentrations during aircraft flights in the Arctic and Antarctic regions, the appearance of polar stratospheric clouds (PSCs) are frequently associated with false reductions in ozone derived from the TOMS albedo data. By combining radiative transfer calculations with the observed PSC and ozone data, it is shown that PSCs located near or above the ozone density maximum (with optical thickness greater than 0.1) can explain most of the differences between TOMS ozone data and ground or in situ ozone measurements. Several examples of real and false TOMS mini-hole phenomenon are investigated using data from the 1989 Airborne Arctic Stratospheric Expedition (AASE) and from balloon flights over Norway and Sweden. Other/Unknown Material albedo Antarc* Antarctic Arctic NASA Technical Reports Server (NTRS) Arctic Antarctic Norway |
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NASA Technical Reports Server (NTRS) |
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46 |
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46 Torres, O. Ahmad, Z. Herman, J. R. Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone |
topic_facet |
46 |
description |
Small areas of sharply reduced ozone density appear frequently in the maps produced from polar region total ozone mapping spectrometer (TOMS) data. These mini-holes are of the order of 1000 km in extent with a lifetime of a few days. On the basis of measurements from ground-based instruments, balloon-borne ozonesondes, and simultaneous measurements of aerosol and ozone concentrations during aircraft flights in the Arctic and Antarctic regions, the appearance of polar stratospheric clouds (PSCs) are frequently associated with false reductions in ozone derived from the TOMS albedo data. By combining radiative transfer calculations with the observed PSC and ozone data, it is shown that PSCs located near or above the ozone density maximum (with optical thickness greater than 0.1) can explain most of the differences between TOMS ozone data and ground or in situ ozone measurements. Several examples of real and false TOMS mini-hole phenomenon are investigated using data from the 1989 Airborne Arctic Stratospheric Expedition (AASE) and from balloon flights over Norway and Sweden. |
format |
Other/Unknown Material |
author |
Torres, O. Ahmad, Z. Herman, J. R. |
author_facet |
Torres, O. Ahmad, Z. Herman, J. R. |
author_sort |
Torres, O. |
title |
Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone |
title_short |
Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone |
title_full |
Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone |
title_fullStr |
Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone |
title_full_unstemmed |
Optical effects of polar stratospheric clouds on the retrieval of TOMS total ozone |
title_sort |
optical effects of polar stratospheric clouds on the retrieval of toms total ozone |
publishDate |
1992 |
url |
http://ntrs.nasa.gov/search.jsp?R=19920072021 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Antarctic Norway |
geographic_facet |
Arctic Antarctic Norway |
genre |
albedo Antarc* Antarctic Arctic |
genre_facet |
albedo Antarc* Antarctic Arctic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19920072021 Accession ID: 92A54645 |
op_rights |
Copyright |
_version_ |
1766247216680271872 |