Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987

Mixing ratios are presented for a number of long-lived trace gases in the austral polar atmosphere during August and September of 1987. The recent discovery of a 12-year trend of increasing depletion of ozone over the Antarctic Continent in the spring of each year led to numerous theoretical interpr...

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Main Authors: Pollock, Walter H., Lueb, Richard A., Henry, Bruce E., Heidt, Leroy E., Vedder, James F.
Format: Other/Unknown Material
Language:unknown
Published: 1988
Subjects:
Online Access:http://hdl.handle.net/2060/19890005185
id ftnasantrs:oai:casi.ntrs.nasa.gov:19890005185
record_format openpolar
spelling ftnasantrs:oai:casi.ntrs.nasa.gov:19890005185 2023-05-15T13:35:10+02:00 Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987 Pollock, Walter H. Lueb, Richard A. Henry, Bruce E. Heidt, Leroy E. Vedder, James F. Unclassified, Unlimited, Publicly available May 1, 1988 application/pdf http://hdl.handle.net/2060/19890005185 unknown Document ID: 19890005185 Accession ID: 89N14556 http://hdl.handle.net/2060/19890005185 No Copyright CASI ENVIRONMENT POLLUTION NASA, Goddard Space Flight Center, Polar Ozone Workshop. Abstracts; p 149 1988 ftnasantrs 2015-03-15T05:59:46Z Mixing ratios are presented for a number of long-lived trace gases in the austral polar atmosphere during August and September of 1987. The recent discovery of a 12-year trend of increasing depletion of ozone over the Antarctic Continent in the spring of each year led to numerous theoretical interpretations and several scientific expeditions to the region. The results herein were obtained as part of a major effort involving penetration of the region of ozone depletion by NASA's multi-instrumented aircraft. One of the 14 instruments on the high-altitude ER-2 aircraft collected pressurized air samples between latitudes of 53 degrees and 72 degrees south at pressure altitudes up to 21 km in a series of 12 flights from Punta Arenas, Chile, over the Palmer Peninsula. The sampling system, located in the nose section of ER-2, has an inlet tube in the free airstream, a metal-bellows air pump, and 14 specially treated 1.6 l stainless-steel canisters for containing the pressurized air at 350 kPa. A typical flight profile consisted of a southbound path on the 428 K potential temperature surface, a descent to a pressure altitude of 13.7 km, a climb to the 460 K surface, and return on this surface. Mixing ratios for the trace gases were obtained from gas chromatographic analyses of the pressurized air samples. Of the species measured, the mixing ratios for CH4, CO, N2O, CF2 Cl2, CFCl3, CH3, CCl3, CCl4, and C2F3Cl3 are reported here. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic Austral Bellows ENVELOPE(178.967,178.967,-84.833,-84.833)
institution Open Polar
collection NASA Technical Reports Server (NTRS)
op_collection_id ftnasantrs
language unknown
topic ENVIRONMENT POLLUTION
spellingShingle ENVIRONMENT POLLUTION
Pollock, Walter H.
Lueb, Richard A.
Henry, Bruce E.
Heidt, Leroy E.
Vedder, James F.
Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987
topic_facet ENVIRONMENT POLLUTION
description Mixing ratios are presented for a number of long-lived trace gases in the austral polar atmosphere during August and September of 1987. The recent discovery of a 12-year trend of increasing depletion of ozone over the Antarctic Continent in the spring of each year led to numerous theoretical interpretations and several scientific expeditions to the region. The results herein were obtained as part of a major effort involving penetration of the region of ozone depletion by NASA's multi-instrumented aircraft. One of the 14 instruments on the high-altitude ER-2 aircraft collected pressurized air samples between latitudes of 53 degrees and 72 degrees south at pressure altitudes up to 21 km in a series of 12 flights from Punta Arenas, Chile, over the Palmer Peninsula. The sampling system, located in the nose section of ER-2, has an inlet tube in the free airstream, a metal-bellows air pump, and 14 specially treated 1.6 l stainless-steel canisters for containing the pressurized air at 350 kPa. A typical flight profile consisted of a southbound path on the 428 K potential temperature surface, a descent to a pressure altitude of 13.7 km, a climb to the 460 K surface, and return on this surface. Mixing ratios for the trace gases were obtained from gas chromatographic analyses of the pressurized air samples. Of the species measured, the mixing ratios for CH4, CO, N2O, CF2 Cl2, CFCl3, CH3, CCl3, CCl4, and C2F3Cl3 are reported here.
format Other/Unknown Material
author Pollock, Walter H.
Lueb, Richard A.
Henry, Bruce E.
Heidt, Leroy E.
Vedder, James F.
author_facet Pollock, Walter H.
Lueb, Richard A.
Henry, Bruce E.
Heidt, Leroy E.
Vedder, James F.
author_sort Pollock, Walter H.
title Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987
title_short Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987
title_full Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987
title_fullStr Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987
title_full_unstemmed Mixing ratios of trace gases in the austral polar atmosphere during August and September of 1987
title_sort mixing ratios of trace gases in the austral polar atmosphere during august and september of 1987
publishDate 1988
url http://hdl.handle.net/2060/19890005185
op_coverage Unclassified, Unlimited, Publicly available
long_lat ENVELOPE(178.967,178.967,-84.833,-84.833)
geographic Antarctic
The Antarctic
Austral
Bellows
geographic_facet Antarctic
The Antarctic
Austral
Bellows
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
op_source CASI
op_relation Document ID: 19890005185
Accession ID: 89N14556
http://hdl.handle.net/2060/19890005185
op_rights No Copyright
_version_ 1766061989921030144