globalchange  > 全球变化的国际研究计划
DOI: 10.1002/joc.5982
Scopus ID: 2-s2.0-85061335119
Contribution of atmospheric moisture transport to winter Arctic warming
Author: Hao M.; Luo Y.; Lin Y.; Zhao Z.; Wang L.; Huang J.
Source Publication: International Journal of Climatology
ISSN: 8998418
Publishing Year: 2019
Language: 英语
Keyword: Arctic ; atmospheric moisture content ; atmospheric moisture transport ; Polar-WRF ; surface air temperature ; surface radiation balance ; water cycle
Scopus Keyword: Atmospheric temperature ; Climate models ; Moisture determination ; Sea ice ; Arctic ; Atmospheric moisture ; Atmospheric moisture content ; Polar-WRF ; Surface air temperatures ; Surface radiation ; Water cycle ; Moisture
English Abstract: Atmospheric moisture transport (AMT) is known to have an influence on the winter Arctic surface air temperature (SAT). However, a systematic investigation involving a verification of the physical linkages and spatial sensitivity within the Arctic, as well as a quantification of such contribution is still lacking. Our work first verifies the variation coherence between AMT and the SAT over the winters of 1979–2015, based on multiple data sets. Climate model projections reveal tendencies towards more frequent high values in both SAT and AMT from 2010 to 2065 relative to that from 1950 to 2005, as well as a high correlation coefficient between their detrended series. Then, a composite analysis is applied based on different AMT values. During high-AMT episodes, enhanced AMT intrudes into the Arctic, with the Norwegian Sea as the gateway, and further induces unevenly distributed warming inside the Arctic. The greatest warming occurs in the Barents-Kara Sea, which is tightly associated with the altered atmospheric moisture content and its subsequent changes of surface radiation balance. In addition, the intruding moisture can induce latent heat release and sea ice melting, which also influences the warming. Furthermore, by conducting numerical model experiments in the winter of 2012/2013, a total warming effect of 9.66 °C averaged across the Arctic for the original AMT is revealed. By setting different incremental AMT values in five cases, the leading role of AMT is found to switch in the 0.5MT case (the case wherein the AMT value is 0.5 times the original) from altering the atmospheric moisture content to producing precipitation. This finding suggests that evenly spaced AMTs result in the alleviation of SAT increases. © 2019 Royal Meteorological Society
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被引频次[WOS]:3   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:全球变化的国际研究计划

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Affiliation: Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China; Joint Center for Global Change Studies, Beijing, China; State Key Laboratory of Cryosphere Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China

Recommended Citation:
Hao M.,Luo Y.,Lin Y.,et al. Contribution of atmospheric moisture transport to winter Arctic warming[J]. International Journal of Climatology,2019-01-01
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