Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate
Most climate models neglect cloud longwave (LW) scattering because scattering is considered negligible compared to strong LW absorption by clouds and greenhouse gases. While this rationale is valid for simulating extrapolar regions, it is questionable for the polar regions, where the atmosphere is d...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Language: | unknown |
Published: |
2021
|
Subjects: | |
Online Access: | http://www.osti.gov/servlets/purl/1833488 https://www.osti.gov/biblio/1833488 https://doi.org/10.1029/2020gl090534 |
id |
ftosti:oai:osti.gov:1833488 |
---|---|
record_format |
openpolar |
spelling |
ftosti:oai:osti.gov:1833488 2023-07-30T03:56:56+02:00 Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate Chen, Yi‐Hsuan Huang, Xianglei Yang, Ping Kuo, Chia‐Pang Chen, Xiuhong 2021-12-13 application/pdf http://www.osti.gov/servlets/purl/1833488 https://www.osti.gov/biblio/1833488 https://doi.org/10.1029/2020gl090534 unknown http://www.osti.gov/servlets/purl/1833488 https://www.osti.gov/biblio/1833488 https://doi.org/10.1029/2020gl090534 doi:10.1029/2020gl090534 54 ENVIRONMENTAL SCIENCES 2021 ftosti https://doi.org/10.1029/2020gl090534 2023-07-11T10:08:42Z Most climate models neglect cloud longwave (LW) scattering because scattering is considered negligible compared to strong LW absorption by clouds and greenhouse gases. While this rationale is valid for simulating extrapolar regions, it is questionable for the polar regions, where the atmosphere is dry and hence has weak absorption, and ice clouds that have strong scattering capability frequently occur. Using the slab-ocean Community Earth System Model, we show that ice cloud LW scattering can warm winter surface air temperature by 0.8–1.8 K in the Arctic and 1.3–1.9 K in the Antarctic, while this warming becomes much weaker in polar summer. Such scattering effect cannot be correctly assessed when sea surface temperature and sea ice are prescribed as this effect is manifested through a surface-atmosphere coupling. Furthermore, cloud LW scattering is a necessity for the correct simulation of polar climate and surface radiation budget, especially in the winter. Other/Unknown Material Antarc* Antarctic Arctic Sea ice SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Antarctic The Antarctic Geophysical Research Letters 47 23 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Chen, Yi‐Hsuan Huang, Xianglei Yang, Ping Kuo, Chia‐Pang Chen, Xiuhong Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Most climate models neglect cloud longwave (LW) scattering because scattering is considered negligible compared to strong LW absorption by clouds and greenhouse gases. While this rationale is valid for simulating extrapolar regions, it is questionable for the polar regions, where the atmosphere is dry and hence has weak absorption, and ice clouds that have strong scattering capability frequently occur. Using the slab-ocean Community Earth System Model, we show that ice cloud LW scattering can warm winter surface air temperature by 0.8–1.8 K in the Arctic and 1.3–1.9 K in the Antarctic, while this warming becomes much weaker in polar summer. Such scattering effect cannot be correctly assessed when sea surface temperature and sea ice are prescribed as this effect is manifested through a surface-atmosphere coupling. Furthermore, cloud LW scattering is a necessity for the correct simulation of polar climate and surface radiation budget, especially in the winter. |
author |
Chen, Yi‐Hsuan Huang, Xianglei Yang, Ping Kuo, Chia‐Pang Chen, Xiuhong |
author_facet |
Chen, Yi‐Hsuan Huang, Xianglei Yang, Ping Kuo, Chia‐Pang Chen, Xiuhong |
author_sort |
Chen, Yi‐Hsuan |
title |
Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate |
title_short |
Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate |
title_full |
Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate |
title_fullStr |
Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate |
title_full_unstemmed |
Seasonal Dependent Impact of Ice Cloud Longwave Scattering on the Polar Climate |
title_sort |
seasonal dependent impact of ice cloud longwave scattering on the polar climate |
publishDate |
2021 |
url |
http://www.osti.gov/servlets/purl/1833488 https://www.osti.gov/biblio/1833488 https://doi.org/10.1029/2020gl090534 |
geographic |
Arctic Antarctic The Antarctic |
geographic_facet |
Arctic Antarctic The Antarctic |
genre |
Antarc* Antarctic Arctic Sea ice |
genre_facet |
Antarc* Antarctic Arctic Sea ice |
op_relation |
http://www.osti.gov/servlets/purl/1833488 https://www.osti.gov/biblio/1833488 https://doi.org/10.1029/2020gl090534 doi:10.1029/2020gl090534 |
op_doi |
https://doi.org/10.1029/2020gl090534 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
23 |
_version_ |
1772815255411359744 |