Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes
Recent studies have used satellite data to estimate the response of top-of-atmosphere (TOA) radiative fluxes to surface temperature changes in the Arctic. The satellite-observed radiative response is indicative of Arctic climate sensitivity that determines future Arctic warming. However, it remains...
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ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-120269 2023-05-15T13:10:55+02:00 Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes Hwang, Jiwon Choi, Yong-Sang Su, Hui Jiang, Jonathan H. 2020 https://repository.hkust.edu.hk/ir/Record/1783.1-120269 https://doi.org/10.1029/2020EA001316 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2333-5084&rft.volume=7&rft.issue=11&rft.date=2020&rft.spage=&rft.aulast=Hwang&rft.aufirst=&rft.atitle=Invariability+of+Arctic+Top-of-Atmosphere+Radiative+Response+to+Surface+Temperature+Changes&rft.title=Earth+and+Space+Science http://www.scopus.com/record/display.url?eid=2-s2.0-85096429072&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000595886000012 English eng Blackwell Publishing Ltd https://repository.hkust.edu.hk/ir/Record/1783.1-120269 Earth and Space Science, v. 7, (11), November 2020, article number e2020EA001316 2333-5084 https://doi.org/10.1029/2020EA001316 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2333-5084&rft.volume=7&rft.issue=11&rft.date=2020&rft.spage=&rft.aulast=Hwang&rft.aufirst=&rft.atitle=Invariability+of+Arctic+Top-of-Atmosphere+Radiative+Response+to+Surface+Temperature+Changes&rft.title=Earth+and+Space+Science http://www.scopus.com/record/display.url?eid=2-s2.0-85096429072&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000595886000012 Article 2020 ftunivsthongkong https://doi.org/10.1029/2020EA001316 2022-09-30T00:07:49Z Recent studies have used satellite data to estimate the response of top-of-atmosphere (TOA) radiative fluxes to surface temperature changes in the Arctic. The satellite-observed radiative response is indicative of Arctic climate sensitivity that determines future Arctic warming. However, it remains ambiguous whether the satellite-observed radiative response is invariable because the time period covered by satellite data reflects a rapidly changing transient Arctic climate state with considerable sea ice loss. Using NASA's Clouds and Earth's Radiant Energy System (CERES) observations from 2000 to 2018, this study evaluates the invariability of the radiative response by comparing the radiative response of the high sea ice concentration (SIC) period to that of the low SIC period. The results show that the net radiative response remains approximately unchanged regardless of the SIC (−0.19 ± 0.44 and 0.15 ± 0.16 W m−2 K−1 for high and low SIC periods, respectively). In addition, seven of the 11 models from the Coupled Model Intercomparison Project Phase 6 (CMIP6) demonstrated that the modeled radiative responses are stable. The ERA-interim reanalysis estimates show that regionally confined changes in individual radiative feedbacks such as albedo, lapse rate, water vapor, and clouds do not vary considerably. Consequently, we infer that the radiative response in the Arctic may remain stable even under rapid Arctic climate change. Hence, the Arctic climate sensitivity can be quantified with present satellite observations. ©2020. The Authors. Article in Journal/Newspaper albedo Arctic Arctic Climate change Sea ice The Hong Kong University of Science and Technology: HKUST Institutional Repository Arctic Earth and Space Science 7 11 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
description |
Recent studies have used satellite data to estimate the response of top-of-atmosphere (TOA) radiative fluxes to surface temperature changes in the Arctic. The satellite-observed radiative response is indicative of Arctic climate sensitivity that determines future Arctic warming. However, it remains ambiguous whether the satellite-observed radiative response is invariable because the time period covered by satellite data reflects a rapidly changing transient Arctic climate state with considerable sea ice loss. Using NASA's Clouds and Earth's Radiant Energy System (CERES) observations from 2000 to 2018, this study evaluates the invariability of the radiative response by comparing the radiative response of the high sea ice concentration (SIC) period to that of the low SIC period. The results show that the net radiative response remains approximately unchanged regardless of the SIC (−0.19 ± 0.44 and 0.15 ± 0.16 W m−2 K−1 for high and low SIC periods, respectively). In addition, seven of the 11 models from the Coupled Model Intercomparison Project Phase 6 (CMIP6) demonstrated that the modeled radiative responses are stable. The ERA-interim reanalysis estimates show that regionally confined changes in individual radiative feedbacks such as albedo, lapse rate, water vapor, and clouds do not vary considerably. Consequently, we infer that the radiative response in the Arctic may remain stable even under rapid Arctic climate change. Hence, the Arctic climate sensitivity can be quantified with present satellite observations. ©2020. The Authors. |
format |
Article in Journal/Newspaper |
author |
Hwang, Jiwon Choi, Yong-Sang Su, Hui Jiang, Jonathan H. |
spellingShingle |
Hwang, Jiwon Choi, Yong-Sang Su, Hui Jiang, Jonathan H. Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes |
author_facet |
Hwang, Jiwon Choi, Yong-Sang Su, Hui Jiang, Jonathan H. |
author_sort |
Hwang, Jiwon |
title |
Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes |
title_short |
Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes |
title_full |
Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes |
title_fullStr |
Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes |
title_full_unstemmed |
Invariability of Arctic Top-of-Atmosphere Radiative Response to Surface Temperature Changes |
title_sort |
invariability of arctic top-of-atmosphere radiative response to surface temperature changes |
publisher |
Blackwell Publishing Ltd |
publishDate |
2020 |
url |
https://repository.hkust.edu.hk/ir/Record/1783.1-120269 https://doi.org/10.1029/2020EA001316 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2333-5084&rft.volume=7&rft.issue=11&rft.date=2020&rft.spage=&rft.aulast=Hwang&rft.aufirst=&rft.atitle=Invariability+of+Arctic+Top-of-Atmosphere+Radiative+Response+to+Surface+Temperature+Changes&rft.title=Earth+and+Space+Science http://www.scopus.com/record/display.url?eid=2-s2.0-85096429072&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000595886000012 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Arctic Climate change Sea ice |
genre_facet |
albedo Arctic Arctic Climate change Sea ice |
op_relation |
https://repository.hkust.edu.hk/ir/Record/1783.1-120269 Earth and Space Science, v. 7, (11), November 2020, article number e2020EA001316 2333-5084 https://doi.org/10.1029/2020EA001316 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2333-5084&rft.volume=7&rft.issue=11&rft.date=2020&rft.spage=&rft.aulast=Hwang&rft.aufirst=&rft.atitle=Invariability+of+Arctic+Top-of-Atmosphere+Radiative+Response+to+Surface+Temperature+Changes&rft.title=Earth+and+Space+Science http://www.scopus.com/record/display.url?eid=2-s2.0-85096429072&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000595886000012 |
op_doi |
https://doi.org/10.1029/2020EA001316 |
container_title |
Earth and Space Science |
container_volume |
7 |
container_issue |
11 |
_version_ |
1766245239510532096 |