期刊
NATURE GEOSCIENCE
卷 5, 期 1, 页码 11-17出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NGEO1332
关键词
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资金
- NOAA [NA08OAR4310543]
- U.S. DOE [DE-FG02-08ER64574, DE-FG02-05ER63965, DE-FG02-05ER64058, DE-AC02-05CH11231]
- NSF Science and Technology Center for Multiscale Modeling of Atmospheric Processes [ATM-0425247]
- Office of Science, Office of Biological and Environmental Research of the U.S. DOEnergy [DE-AC02-05CH11231]
- DOE [DE-SC0002037]
- NOAA's Climate Goal
- NSF ARC [1023366]
- National Science Foundation (NSF) [ATM-0639542, AGS-0951807]
- DOE's Office of Science
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [951807] Funding Source: National Science Foundation
- Directorate For Geosciences
- Division Of Polar Programs [1023366] Funding Source: National Science Foundation
The Arctic region is particularly sensitive to climate change. Mixed-phase clouds, comprising both ice and supercooled liquid water, have a large impact on radiative fluxes in the Arctic. These clouds occur frequently during all seasons in the region, where they often persist for many days at a time. This persistence is remarkable given the inherent instability of ice-liquid mixtures. In recent years it has emerged that feedbacks between numerous local processes, including the formation and growth of ice and cloud droplets, radiative cooling, turbulence, entrainment and surface fluxes of heat and moisture, interact to create a resilient mixed-phase cloud system. As well as the persistent mixed-phase cloud state there is another distinct Arctic state, characterized by radiatively clear conditions. The occurrence of either state seems to be related, in part, to large-scale environmental conditions. We suggest that shifts in the large-scale environment could alter the prevalence of mixed-phase clouds, potentially affecting surface radiative fluxes and the Arctic energy budget.
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