Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer
The reactions of reduced tropospheric trace gases with hydroxyl radicals are thought to play a significant role in global tropospheric photochemistry. Since tropospheric methane and nonmethane hydrocarbon (NMHC) concentrations will affect the tropospheric hydroxyl radical concentrations, accurate me...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19820052754 2023-05-15T13:46:48+02:00 Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer Cofer, W. R., III Unclassified, Unlimited, Publicly available May 1, 1982 http://ntrs.nasa.gov/search.jsp?R=19820052754 unknown http://ntrs.nasa.gov/search.jsp?R=19820052754 Accession ID: 82A36289 Copyright Other Sources 45 Symposium on the Composition of the Nonurban Troposphere; May 25-28, 1982; Williamsburg, VA 1982 ftnasantrs 2012-02-15T15:07:00Z The reactions of reduced tropospheric trace gases with hydroxyl radicals are thought to play a significant role in global tropospheric photochemistry. Since tropospheric methane and nonmethane hydrocarbon (NMHC) concentrations will affect the tropospheric hydroxyl radical concentrations, accurate measurements of tropospheric CH4 and NMHC concentrations are necessary. Such measurements were, therefore, included in the first leg (from Hamburg, West Germany to Montevideo, Uruguay) of the 1980-1981 Antarctic Expedition. On the basis of the obtained data, a pronounced gradient between northern and southern hemispheric methane concentrations was observed in the marine boundary layer in the region of the intertropical convergence zone. Methane concentrations gradually decreased from about 1.70 ppmv at 40 deg N latitude to about 1.68 ppmv at 14 deg N latitude, then dropped sharply between 14 deg N and 10 deg N latitude to about 1.61 ppmv. NMHC data are also discussed. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic Uruguay |
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NASA Technical Reports Server (NTRS) |
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45 Cofer, W. R., III Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer |
topic_facet |
45 |
description |
The reactions of reduced tropospheric trace gases with hydroxyl radicals are thought to play a significant role in global tropospheric photochemistry. Since tropospheric methane and nonmethane hydrocarbon (NMHC) concentrations will affect the tropospheric hydroxyl radical concentrations, accurate measurements of tropospheric CH4 and NMHC concentrations are necessary. Such measurements were, therefore, included in the first leg (from Hamburg, West Germany to Montevideo, Uruguay) of the 1980-1981 Antarctic Expedition. On the basis of the obtained data, a pronounced gradient between northern and southern hemispheric methane concentrations was observed in the marine boundary layer in the region of the intertropical convergence zone. Methane concentrations gradually decreased from about 1.70 ppmv at 40 deg N latitude to about 1.68 ppmv at 14 deg N latitude, then dropped sharply between 14 deg N and 10 deg N latitude to about 1.61 ppmv. NMHC data are also discussed. |
format |
Other/Unknown Material |
author |
Cofer, W. R., III |
author_facet |
Cofer, W. R., III |
author_sort |
Cofer, W. R., III |
title |
Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer |
title_short |
Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer |
title_full |
Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer |
title_fullStr |
Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer |
title_full_unstemmed |
Methane and nonmethane hydrocarbon concentrations in the Atlantic marine boundary layer |
title_sort |
methane and nonmethane hydrocarbon concentrations in the atlantic marine boundary layer |
publishDate |
1982 |
url |
http://ntrs.nasa.gov/search.jsp?R=19820052754 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Uruguay |
geographic_facet |
Antarctic Uruguay |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19820052754 Accession ID: 82A36289 |
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Copyright |
_version_ |
1766245232333029376 |