Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades
Whether sea-ice loss or lapse-rate feedback dominates the Arctic amplification (AA) remains an open question. Analysis of data sets based upon observations reveals a 1.11 K per decade surface warming trend in the Arctic (70°–90°N) during 1979–2020 cold season (October–February) that is five times hi...
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Online Access: | http://www.osti.gov/servlets/purl/1829713 https://www.osti.gov/biblio/1829713 https://doi.org/10.1029/2021gl094878 |
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ftosti:oai:osti.gov:1829713 2023-07-30T04:00:24+02:00 Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades Zhang, Rudong Wang, Hailong Fu, Qiang Rasch, Philip J. Wu, Mingxuan Maslowski, Wieslaw 2021-12-03 application/pdf http://www.osti.gov/servlets/purl/1829713 https://www.osti.gov/biblio/1829713 https://doi.org/10.1029/2021gl094878 unknown http://www.osti.gov/servlets/purl/1829713 https://www.osti.gov/biblio/1829713 https://doi.org/10.1029/2021gl094878 doi:10.1029/2021gl094878 54 ENVIRONMENTAL SCIENCES 2021 ftosti https://doi.org/10.1029/2021gl094878 2023-07-11T10:08:10Z Whether sea-ice loss or lapse-rate feedback dominates the Arctic amplification (AA) remains an open question. Analysis of data sets based upon observations reveals a 1.11 K per decade surface warming trend in the Arctic (70°–90°N) during 1979–2020 cold season (October–February) that is five times higher than the corresponding global mean. Based on surface energy budget analysis, we show that the largest contribution (~82%) to this cold season warming trend is attributed to changes in clear-sky downward longwave radiation. In contrast to that in Arctic summer and over tropics, a reduction in lower-tropospheric inversions plays a unique role in explaining the reduction of the downward longwave radiation associated with atmospheric nonuniform temperature and corresponding moisture changes. Our analyses also suggest that Arctic lower-tropospheric stability should be considered in conjunction with sea-ice decline during the preceding warm season to explain AA. Other/Unknown Material Arctic Sea ice SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Geophysical Research Letters 48 19 |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Zhang, Rudong Wang, Hailong Fu, Qiang Rasch, Philip J. Wu, Mingxuan Maslowski, Wieslaw Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Whether sea-ice loss or lapse-rate feedback dominates the Arctic amplification (AA) remains an open question. Analysis of data sets based upon observations reveals a 1.11 K per decade surface warming trend in the Arctic (70°–90°N) during 1979–2020 cold season (October–February) that is five times higher than the corresponding global mean. Based on surface energy budget analysis, we show that the largest contribution (~82%) to this cold season warming trend is attributed to changes in clear-sky downward longwave radiation. In contrast to that in Arctic summer and over tropics, a reduction in lower-tropospheric inversions plays a unique role in explaining the reduction of the downward longwave radiation associated with atmospheric nonuniform temperature and corresponding moisture changes. Our analyses also suggest that Arctic lower-tropospheric stability should be considered in conjunction with sea-ice decline during the preceding warm season to explain AA. |
author |
Zhang, Rudong Wang, Hailong Fu, Qiang Rasch, Philip J. Wu, Mingxuan Maslowski, Wieslaw |
author_facet |
Zhang, Rudong Wang, Hailong Fu, Qiang Rasch, Philip J. Wu, Mingxuan Maslowski, Wieslaw |
author_sort |
Zhang, Rudong |
title |
Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades |
title_short |
Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades |
title_full |
Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades |
title_fullStr |
Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades |
title_full_unstemmed |
Understanding the Cold Season Arctic Surface Warming Trend in Recent Decades |
title_sort |
understanding the cold season arctic surface warming trend in recent decades |
publishDate |
2021 |
url |
http://www.osti.gov/servlets/purl/1829713 https://www.osti.gov/biblio/1829713 https://doi.org/10.1029/2021gl094878 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
http://www.osti.gov/servlets/purl/1829713 https://www.osti.gov/biblio/1829713 https://doi.org/10.1029/2021gl094878 doi:10.1029/2021gl094878 |
op_doi |
https://doi.org/10.1029/2021gl094878 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
19 |
_version_ |
1772810906748583936 |