气候变化领域集成服务门户(CCPortal): Present Temperature, Precipitation, and Rain-on-Snow Climate in Svalbard

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DOI	10.1029/2019JD032155
	Present Temperature, Precipitation, and Rain-on-Snow Climate in Svalbard
	Wickström S.; Jonassen M.O.; Cassano J.J.; Vihma T.
发表日期	2020
ISSN	2169897X
卷号	125 期号:14
英文摘要	The Svalbard Archipelago has undergone rapid warming in the recent decades leading to warmer and wetter winter conditions. This study relates the present (2013–2018) 2 m temperature, precipitation, and rain-on-snow (ROS) climate in Svalbard to different atmospheric circulation (AC) types utilizing the high-resolution numerical weather prediction model Application of Research to Operations at Mesoscale (AROME)-Arctic. We find that the 2 m median temperatures vary most across AC types in winter and spring and in summer they vary the least. In all seasons the 10th percentile 2 m temperatures are above 0°C with southwesterly AC types over Svalbard. In comparison, the relationship between AC type and precipitation varies more spatially, with most accumulated precipitation and highest median precipitation intensities with onshore flow over open water. Our results suggest that sea ice explains a large part of the local variability in both 2 m temperature and precipitation. In the studied period ROS is a frequent phenomenon up to 150 m above sea level (ASL) on land, with most events in the southwestern parts of the archipelago (57 cases during five winter seasons). ROS events in winter occur predominantly with AC types from the southerly sector or during a low-pressure center/trough passage. The southwesterly cyclonic AC type, with a low-pressure center west of Svalbard, is the most frequent AC type for ROS events. In addition to being the most frequent, the southwesterly AC has the largest spatial coverage of ROS. © 2020. The Authors.
英文关键词	Arctic; AROME-Arctic; atmospheric circulation; rain-on-snow; Svalbard; temperature
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185911
作者单位	Department of Arctic Geophysics, University Centre in Svalbard, Longyearbyen, Norway; Geophysical Institute, University of Bergen, Bergen, Norway; Department of Atmospheric and Oceanic Sciences (ATOC), University of Colorado Boulder, Boulder, CO, United States; Finnish Meteorological Institute, Helsinki, Finland
推荐引用方式 GB/T 7714	Wickström S.,Jonassen M.O.,Cassano J.J.,et al. Present Temperature, Precipitation, and Rain-on-Snow Climate in Svalbard[J],2020,125(14).
APA	Wickström S.,Jonassen M.O.,Cassano J.J.,&Vihma T..(2020).Present Temperature, Precipitation, and Rain-on-Snow Climate in Svalbard.Journal of Geophysical Research: Atmospheres,125(14).
MLA	Wickström S.,et al."Present Temperature, Precipitation, and Rain-on-Snow Climate in Svalbard".Journal of Geophysical Research: Atmospheres 125.14(2020).