气候变化领域集成服务门户(CCPortal): Arctic Cyclones and Their Interactions With the Declining Sea Ice: A Recent Climatology

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DOI	10.1029/2020JD034366
	Arctic Cyclones and Their Interactions With the Declining Sea Ice: A Recent Climatology
	Valkonen E.; Cassano J.; Cassano E.
发表日期	2021
ISSN	2169897X
卷号	126 期号:12
英文摘要	In this study, we applied a cyclone tracking algorithm to multiple reanalyses and categorized the detected cyclones based on season, intensity, and sea ice state to provide an Arctic cyclone climatology with emphasis on cyclone-sea ice interactions over the Arctic Ocean and adjacent waters. Our study period is from 1979 to 2015 and the reanalyses we are using are ERA-Interim, ERA5, and CFSR. As for our intensity variable, we use Accumulated Cyclone Energy (ACE), which has commonly been used as an intensity metric in the tropics but has not been utilized for high latitudes before. ACE has the advantage that it relates the cyclone intensity to the kinetic energy of the cyclone and therefore better represents the cyclone impact/interaction with the surface. We performed comparisons with the other more commonly used intensity metrics to assess the use of the ACE metric in the Arctic. Our main findings include increased cyclone counts with higher trends toward the end of the study period. Cold season cyclone counts were also found to be related to decreased sea ice concentration throughout the year. We also show that there is a relationship between the cyclone intensity measured by ACE and the surface state. Less sea ice was shown to be related to higher cyclone intensities. Comparisons between the the three reanalysis data sets are also presented. © 2021. The Authors.
英文关键词	Arctic cyclones; atmosphere - sea ice - ocean interactions; polar atmosphere; sea ice
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/185129
作者单位	Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States
推荐引用方式 GB/T 7714	Valkonen E.,Cassano J.,Cassano E.. Arctic Cyclones and Their Interactions With the Declining Sea Ice: A Recent Climatology[J],2021,126(12).
APA	Valkonen E.,Cassano J.,&Cassano E..(2021).Arctic Cyclones and Their Interactions With the Declining Sea Ice: A Recent Climatology.Journal of Geophysical Research: Atmospheres,126(12).
MLA	Valkonen E.,et al."Arctic Cyclones and Their Interactions With the Declining Sea Ice: A Recent Climatology".Journal of Geophysical Research: Atmospheres 126.12(2021).