Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic
Surface seawater and boundary layer air samples were collected on the icebreaker Xuelong (Snow Dragon) during the Fourth Chinese Arctic Research Expedition (CHINARE2010) cruise in the North Pacific and Arctic Oceans during 2010. Samples were analyzed for organochlorine pesticides (OCPs), including t...
Published in: | Journal of Geophysical Research: Atmospheres |
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fthzgzmk:oai:publications.hereon.de:29642 2023-06-11T04:07:45+02:00 Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic Cai, M. Ma, Y. Xie, Z. Zhong, G. Moeller, A. Yang, H. Sturm, R. He, J. Ebinghaus, R. Meng, X.-Z. 2012 https://publications.hereon.de/id/29642 https://publications.hzg.de/id/29642 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2012/cai_29642.pdf en eng AGU http://dx.doi.org/10.1029/2011JD016910 urn:issn:0148-0227 https://publications.hereon.de/id/29642 https://publications.hzg.de/id/29642 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2012/cai_29642.pdf info:eu-repo/semantics/openAccess open_access oa_gruen issn:0148-0227 Cai, M.; Ma, Y.; Xie, Z.; Zhong, G.; Moeller, A.; Yang, H.; Sturm, R.; He, J.; Ebinghaus, R.; Meng, X.-Z.: Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic. In: Journal of Geophysical Research : Atmospheres. Vol. 117 (2012) D 6, 06311. (DOI:10.1029/2011JD016910) info:eu-repo/classification/ddc/551 info:eu-repo/semantics/article Zeitschrift Artikel 2012 fthzgzmk https://doi.org/10.1029/2011JD016910 2023-05-28T23:23:26Z Surface seawater and boundary layer air samples were collected on the icebreaker Xuelong (Snow Dragon) during the Fourth Chinese Arctic Research Expedition (CHINARE2010) cruise in the North Pacific and Arctic Oceans during 2010. Samples were analyzed for organochlorine pesticides (OCPs), including three isomers of hexachlorocyclohexane (HCH), hexachlorobenzene (HCB), and two isomers of heptachlor epoxide. The gaseous total HCH (ΣHCHs) concentrations were approximately four times lower (average 12.0 pg m−3) than those measured during CHINARE2008 (average 51.4 pg m−3), but were comparable to those measured during CHINARE2003 (average 13.4 pg m−3) in the same study area. These changes are consistent with the evident retreat of sea ice coverage from 2003 to 2008 and increase of sea ice coverage from 2008 to 2009 and 2010. Gaseous β-HCH concentrations in the atmosphere were typically below the method detection limit, consistent with the expectation that ocean currents provide the main transport pathway for β-HCH into the Arctic. The concentrations of all dissolved HCH isomers in seawater increase with increasing latitude, and levels of dissolved HCB also increase (from 5.7 to 7.1 pg L−1) at high latitudes (above 73°N). These results illustrate the role of cold condensation processes in the transport of OCPs. The observed air–sea gas exchange gradients in the Arctic Ocean mainly favored net deposition of OCPs, with the exception of those for β-HCH, which favored volatilization. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Sea ice Hereon Publications (Helmholtz-Zentrum) Arctic Arctic Ocean Pacific Journal of Geophysical Research: Atmospheres 117 D6 n/a n/a |
institution |
Open Polar |
collection |
Hereon Publications (Helmholtz-Zentrum) |
op_collection_id |
fthzgzmk |
language |
English |
topic |
info:eu-repo/classification/ddc/551 |
spellingShingle |
info:eu-repo/classification/ddc/551 Cai, M. Ma, Y. Xie, Z. Zhong, G. Moeller, A. Yang, H. Sturm, R. He, J. Ebinghaus, R. Meng, X.-Z. Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic |
topic_facet |
info:eu-repo/classification/ddc/551 |
description |
Surface seawater and boundary layer air samples were collected on the icebreaker Xuelong (Snow Dragon) during the Fourth Chinese Arctic Research Expedition (CHINARE2010) cruise in the North Pacific and Arctic Oceans during 2010. Samples were analyzed for organochlorine pesticides (OCPs), including three isomers of hexachlorocyclohexane (HCH), hexachlorobenzene (HCB), and two isomers of heptachlor epoxide. The gaseous total HCH (ΣHCHs) concentrations were approximately four times lower (average 12.0 pg m−3) than those measured during CHINARE2008 (average 51.4 pg m−3), but were comparable to those measured during CHINARE2003 (average 13.4 pg m−3) in the same study area. These changes are consistent with the evident retreat of sea ice coverage from 2003 to 2008 and increase of sea ice coverage from 2008 to 2009 and 2010. Gaseous β-HCH concentrations in the atmosphere were typically below the method detection limit, consistent with the expectation that ocean currents provide the main transport pathway for β-HCH into the Arctic. The concentrations of all dissolved HCH isomers in seawater increase with increasing latitude, and levels of dissolved HCB also increase (from 5.7 to 7.1 pg L−1) at high latitudes (above 73°N). These results illustrate the role of cold condensation processes in the transport of OCPs. The observed air–sea gas exchange gradients in the Arctic Ocean mainly favored net deposition of OCPs, with the exception of those for β-HCH, which favored volatilization. |
format |
Article in Journal/Newspaper |
author |
Cai, M. Ma, Y. Xie, Z. Zhong, G. Moeller, A. Yang, H. Sturm, R. He, J. Ebinghaus, R. Meng, X.-Z. |
author_facet |
Cai, M. Ma, Y. Xie, Z. Zhong, G. Moeller, A. Yang, H. Sturm, R. He, J. Ebinghaus, R. Meng, X.-Z. |
author_sort |
Cai, M. |
title |
Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic |
title_short |
Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic |
title_full |
Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic |
title_fullStr |
Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic |
title_full_unstemmed |
Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic |
title_sort |
distribution and air–sea exchange of organochlorine pesticides in the north pacific and the arctic |
publisher |
AGU |
publishDate |
2012 |
url |
https://publications.hereon.de/id/29642 https://publications.hzg.de/id/29642 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2012/cai_29642.pdf |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Sea ice |
op_source |
issn:0148-0227 Cai, M.; Ma, Y.; Xie, Z.; Zhong, G.; Moeller, A.; Yang, H.; Sturm, R.; He, J.; Ebinghaus, R.; Meng, X.-Z.: Distribution and air–sea exchange of organochlorine pesticides in the North Pacific and the Arctic. In: Journal of Geophysical Research : Atmospheres. Vol. 117 (2012) D 6, 06311. (DOI:10.1029/2011JD016910) |
op_relation |
http://dx.doi.org/10.1029/2011JD016910 urn:issn:0148-0227 https://publications.hereon.de/id/29642 https://publications.hzg.de/id/29642 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2012/cai_29642.pdf |
op_rights |
info:eu-repo/semantics/openAccess open_access oa_gruen |
op_doi |
https://doi.org/10.1029/2011JD016910 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
117 |
container_issue |
D6 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1768380891843788800 |