The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects
The Arctic is one of the most climatically sensitive regions of the Earth. Climate models robustly project the Arctic to warm 2-3 times faster than the global mean surface temperature, termed polar warming amplification (PWA), but also display the widest range of surface temperature projections in t...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20160007386 2023-05-15T13:11:07+02:00 The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects Taylor, Patrick C. Unclassified, Unlimited, Publicly available May 7, 2015 application/pdf http://hdl.handle.net/2060/20160007386 unknown Document ID: 20160007386 http://hdl.handle.net/2060/20160007386 No Copyright CASI Meteorology and Climatology NF1676L-21436 CERES Science Team Meeting; May 05, 2015 - May 07, 2015; Hampton, VA; United States 2015 ftnasantrs 2019-08-31T23:09:22Z The Arctic is one of the most climatically sensitive regions of the Earth. Climate models robustly project the Arctic to warm 2-3 times faster than the global mean surface temperature, termed polar warming amplification (PWA), but also display the widest range of surface temperature projections in this region. The response of the Arctic to increased CO2 modulates the response in tropical and extra-tropical regions through teleconnections in the atmospheric circulation. An increased frequency of extreme precipitation events in the northern mid-latitudes, for example, has been linked to the change in the background equator-to-pole temperature gradient implied by PWA. Understanding the Arctic climate system is therefore important for predicting global climate change. The ice albedo feedback is the primary mechanism driving PWA, however cloud and dynamical feedbacks significantly contribute. These feedback mechanisms, however, do not operate independently. How do clouds respond to variations in sea ice? This critical question is addressed by combining sea ice, cloud, and radiation observations from satellites, including CERES, CloudSAT, CALIPSO, MODIS, and microwave radiometers, to investigate sea ice-cloud interactions at the interannual timescale in the Arctic. Cloud characteristics are strongly tied to the atmospheric dynamic and thermodynamic state. Therefore, the sensitivity of Arctic cloud characteristics, vertical distribution and optical properties, to sea ice anomalies is computed within atmospheric dynamic and thermodynamic regimes. Results indicate that the cloud response to changes in sea ice concentration differs significantly between atmospheric state regimes. This suggests that (1) the atmospheric dynamic and thermodynamic characteristics and (2) the characteristics of the marginal ice zone are important for determining the seasonal forcing by cloud on sea ice variability. Other/Unknown Material albedo Arctic Climate change Sea ice NASA Technical Reports Server (NTRS) Arctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Meteorology and Climatology |
spellingShingle |
Meteorology and Climatology Taylor, Patrick C. The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects |
topic_facet |
Meteorology and Climatology |
description |
The Arctic is one of the most climatically sensitive regions of the Earth. Climate models robustly project the Arctic to warm 2-3 times faster than the global mean surface temperature, termed polar warming amplification (PWA), but also display the widest range of surface temperature projections in this region. The response of the Arctic to increased CO2 modulates the response in tropical and extra-tropical regions through teleconnections in the atmospheric circulation. An increased frequency of extreme precipitation events in the northern mid-latitudes, for example, has been linked to the change in the background equator-to-pole temperature gradient implied by PWA. Understanding the Arctic climate system is therefore important for predicting global climate change. The ice albedo feedback is the primary mechanism driving PWA, however cloud and dynamical feedbacks significantly contribute. These feedback mechanisms, however, do not operate independently. How do clouds respond to variations in sea ice? This critical question is addressed by combining sea ice, cloud, and radiation observations from satellites, including CERES, CloudSAT, CALIPSO, MODIS, and microwave radiometers, to investigate sea ice-cloud interactions at the interannual timescale in the Arctic. Cloud characteristics are strongly tied to the atmospheric dynamic and thermodynamic state. Therefore, the sensitivity of Arctic cloud characteristics, vertical distribution and optical properties, to sea ice anomalies is computed within atmospheric dynamic and thermodynamic regimes. Results indicate that the cloud response to changes in sea ice concentration differs significantly between atmospheric state regimes. This suggests that (1) the atmospheric dynamic and thermodynamic characteristics and (2) the characteristics of the marginal ice zone are important for determining the seasonal forcing by cloud on sea ice variability. |
format |
Other/Unknown Material |
author |
Taylor, Patrick C. |
author_facet |
Taylor, Patrick C. |
author_sort |
Taylor, Patrick C. |
title |
The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects |
title_short |
The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects |
title_full |
The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects |
title_fullStr |
The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects |
title_full_unstemmed |
The Influence of Sea Ice on Arctic Low Cloud Properties and Radiative Effects |
title_sort |
influence of sea ice on arctic low cloud properties and radiative effects |
publishDate |
2015 |
url |
http://hdl.handle.net/2060/20160007386 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Climate change Sea ice |
genre_facet |
albedo Arctic Climate change Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20160007386 http://hdl.handle.net/2060/20160007386 |
op_rights |
No Copyright |
_version_ |
1766246027754471424 |