Changing composition of the global stratosphere
The current understanding of stratospheric chemistry is reviewed with particular attention to the influence of human activity. Models are in good agreement with measurements for a variety of species in the mid-latitude stratosphere, with the possible exception of ozone (O3) at high altitude. Rates c...
Main Authors: | , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1989
|
Subjects: | |
Online Access: | http://ntrs.nasa.gov/search.jsp?R=19890042902 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19890042902 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19890042902 2023-05-15T13:41:01+02:00 Changing composition of the global stratosphere Mcelroy, Michael B. Salawitch, Ross J. Unclassified, Unlimited, Publicly available Feb 10, 1989 http://ntrs.nasa.gov/search.jsp?R=19890042902 unknown http://ntrs.nasa.gov/search.jsp?R=19890042902 Accession ID: 89A30273 Copyright Other Sources 45 Science; 243; 763-770 1989 ftnasantrs 2012-02-15T18:00:55Z The current understanding of stratospheric chemistry is reviewed with particular attention to the influence of human activity. Models are in good agreement with measurements for a variety of species in the mid-latitude stratosphere, with the possible exception of ozone (O3) at high altitude. Rates calculated for loss of O3 exceed rates for production by about 40 percent at 40 kilometers, indicating a possible but as yet unidentified source of high-altitude O3. The rapid loss of O3 beginning in the mid-1970s at low altitudes over Antarctica in the spring is due primarily to catalytic cycles involving halogen radicals. Reactions on surfaces of polar stratospheric clouds play an important role in regulating the abundance of these radicals. Similar effects could occur in northern polar regions and in cold regions of the tropics. It is argued that the Antarctic phenomenon is likely to persist: prompt drastic reduction in the emission of industrial halocarbons is required if the damage to stratospheric O3 is to be reversed. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
45 |
spellingShingle |
45 Mcelroy, Michael B. Salawitch, Ross J. Changing composition of the global stratosphere |
topic_facet |
45 |
description |
The current understanding of stratospheric chemistry is reviewed with particular attention to the influence of human activity. Models are in good agreement with measurements for a variety of species in the mid-latitude stratosphere, with the possible exception of ozone (O3) at high altitude. Rates calculated for loss of O3 exceed rates for production by about 40 percent at 40 kilometers, indicating a possible but as yet unidentified source of high-altitude O3. The rapid loss of O3 beginning in the mid-1970s at low altitudes over Antarctica in the spring is due primarily to catalytic cycles involving halogen radicals. Reactions on surfaces of polar stratospheric clouds play an important role in regulating the abundance of these radicals. Similar effects could occur in northern polar regions and in cold regions of the tropics. It is argued that the Antarctic phenomenon is likely to persist: prompt drastic reduction in the emission of industrial halocarbons is required if the damage to stratospheric O3 is to be reversed. |
format |
Other/Unknown Material |
author |
Mcelroy, Michael B. Salawitch, Ross J. |
author_facet |
Mcelroy, Michael B. Salawitch, Ross J. |
author_sort |
Mcelroy, Michael B. |
title |
Changing composition of the global stratosphere |
title_short |
Changing composition of the global stratosphere |
title_full |
Changing composition of the global stratosphere |
title_fullStr |
Changing composition of the global stratosphere |
title_full_unstemmed |
Changing composition of the global stratosphere |
title_sort |
changing composition of the global stratosphere |
publishDate |
1989 |
url |
http://ntrs.nasa.gov/search.jsp?R=19890042902 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19890042902 Accession ID: 89A30273 |
op_rights |
Copyright |
_version_ |
1766144500157120512 |