Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign
[1] As part of the 2009 Operation Ice Bridge campaign, the NASA DC-8 aircraft was used to fill the data-time gap in laser observation of the changes in ice sheets, glaciers and sea ice between ICESat-I (Ice, Cloud, and land Elevation Satellite) and ICESat-II. Complementing the cryospheric instrument...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
eScholarship, University of California
2012
|
Subjects: | |
Online Access: | https://escholarship.org/uc/item/78z9q5xb |
id |
ftcdlib:oai:escholarship.org/ark:/13030/qt78z9q5xb |
---|---|
record_format |
openpolar |
spelling |
ftcdlib:oai:escholarship.org/ark:/13030/qt78z9q5xb 2023-05-15T13:39:57+02:00 Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign Yang, MYM Vay, SA Stohl, A Choi, Y Diskin, GS Sachse, GW Blake, DR n/a - n/a 2012-01-01 application/pdf https://escholarship.org/uc/item/78z9q5xb unknown eScholarship, University of California qt78z9q5xb https://escholarship.org/uc/item/78z9q5xb CC-BY CC-BY Journal of Geophysical Research Atmospheres, vol 117, iss 17 Meteorology & Atmospheric Sciences article 2012 ftcdlib 2020-03-20T23:55:55Z [1] As part of the 2009 Operation Ice Bridge campaign, the NASA DC-8 aircraft was used to fill the data-time gap in laser observation of the changes in ice sheets, glaciers and sea ice between ICESat-I (Ice, Cloud, and land Elevation Satellite) and ICESat-II. Complementing the cryospheric instrument payload were four in situ atmospheric sampling instruments integrated onboard to measure trace gas concentrations of CO2, CO, N2O, CH 4, water vapor and various VOCs (Volatile Organic Compounds). This paper examines two plumes encountered at high altitude (12 km) during the campaign; one during a southbound transit flight (13°S) and the other at 86°S over Antarctica. The data presented are especially significant as the Southern Hemisphere is heavily under-sampled during the austral spring, with few if any high-resolution airborne observations of atmospheric gases made over Antarctica. Strong enhancements of CO, CH4, N2O, CHCl 3, OCS, C2H6, C2H2 and C3H8 were observed in the two intercepted air masses that exhibited variations in VOC composition suggesting different sources. The transport model FLEXPART showed that the 13°S plume contained predominately biomass burning emissions originating from Southeast Asia and South Africa, while both anthropogenic and biomass burning emissions were observed at 86° S with South America and South Africa as indicated source regions. The data presented here show evidence that boundary layer pollution is transported from lower latitudes toward the upper troposphere above the South Pole, which may not have been observed in the past. © 2012. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Antarc* Antarctica Sea ice South pole South pole University of California: eScholarship Austral South Pole |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Yang, MYM Vay, SA Stohl, A Choi, Y Diskin, GS Sachse, GW Blake, DR Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
[1] As part of the 2009 Operation Ice Bridge campaign, the NASA DC-8 aircraft was used to fill the data-time gap in laser observation of the changes in ice sheets, glaciers and sea ice between ICESat-I (Ice, Cloud, and land Elevation Satellite) and ICESat-II. Complementing the cryospheric instrument payload were four in situ atmospheric sampling instruments integrated onboard to measure trace gas concentrations of CO2, CO, N2O, CH 4, water vapor and various VOCs (Volatile Organic Compounds). This paper examines two plumes encountered at high altitude (12 km) during the campaign; one during a southbound transit flight (13°S) and the other at 86°S over Antarctica. The data presented are especially significant as the Southern Hemisphere is heavily under-sampled during the austral spring, with few if any high-resolution airborne observations of atmospheric gases made over Antarctica. Strong enhancements of CO, CH4, N2O, CHCl 3, OCS, C2H6, C2H2 and C3H8 were observed in the two intercepted air masses that exhibited variations in VOC composition suggesting different sources. The transport model FLEXPART showed that the 13°S plume contained predominately biomass burning emissions originating from Southeast Asia and South Africa, while both anthropogenic and biomass burning emissions were observed at 86° S with South America and South Africa as indicated source regions. The data presented here show evidence that boundary layer pollution is transported from lower latitudes toward the upper troposphere above the South Pole, which may not have been observed in the past. © 2012. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Yang, MYM Vay, SA Stohl, A Choi, Y Diskin, GS Sachse, GW Blake, DR |
author_facet |
Yang, MYM Vay, SA Stohl, A Choi, Y Diskin, GS Sachse, GW Blake, DR |
author_sort |
Yang, MYM |
title |
Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign |
title_short |
Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign |
title_full |
Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign |
title_fullStr |
Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign |
title_full_unstemmed |
Chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall Operation Ice Bridge field campaign |
title_sort |
chemical composition of tropospheric air masses encountered during high altitude flights (11.5 km) during the 2009 fall operation ice bridge field campaign |
publisher |
eScholarship, University of California |
publishDate |
2012 |
url |
https://escholarship.org/uc/item/78z9q5xb |
op_coverage |
n/a - n/a |
geographic |
Austral South Pole |
geographic_facet |
Austral South Pole |
genre |
Antarc* Antarctica Sea ice South pole South pole |
genre_facet |
Antarc* Antarctica Sea ice South pole South pole |
op_source |
Journal of Geophysical Research Atmospheres, vol 117, iss 17 |
op_relation |
qt78z9q5xb https://escholarship.org/uc/item/78z9q5xb |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766126405173641216 |