气候变化领域集成服务门户(CCPortal): Regional variability of Arctic sea ice seasonal change climate indicators from a passive microwave climate data record

CCPortal

DOI	10.1088/1748-9326/aafb84
	Regional variability of Arctic sea ice seasonal change climate indicators from a passive microwave climate data record
	Bliss A.C.; Steele M.; Peng G.; Meier W.N.; Dickinson S.
发表日期	2019
ISSN	17489318
卷号	14 期号:4
英文摘要	The seasonal evolution of Arctic sea ice can be described by the timing of key dates of sea ice concentration (SIC) change during its annual retreat and advance cycle. Here, we use SICs from a satellite passive microwave climate data record to identify the sea ice dates of opening (DOO), retreat (DOR), advance (DOA), and closing (DOC) and the periods of time between these events. Regional variability in these key dates, periods, and sea ice melt onset and freeze-up dates for 12 Arctic regions during the melt seasons of 1979-2016 is investigated. We find statistically significant positive trends in the length of the melt season (outer ice-free period) for most of the eastern Arctic, the Bering Sea, and Hudson and Baffin Bays with trends as large as 11.9 d decade-1 observed in the Kara Sea. Trends in the DOR and DOA contribute to statistically significant increases in the length of the open water period for all regions within the Arctic Ocean ranging from 3.9 to 13.8 d decade-1. The length of the ice retreat period (DOR-DOO) ranges from 17.1 d in the Sea of Okhotsk to 41 d in the Greenland Sea. The length of the ice advance period (DOC-DOA) is generally much shorter and ranges from 17.9 to 25.3 d in the Sea of Okhotsk and Greenland Sea, respectively. Additionally, we derive the extent of the seasonal ice zone (SIZ) and find statistically significant negative trends (SIZ is shrinking) in the Sea of Okhotsk, Baffin Bay, Greenland Sea, and Barents Sea regions, which are geographically open to the oceans and influenced by reduced winter sea ice extent. Within regions of the Arctic Ocean, statistically significant positive trends indicate that the extent of the SIZ is expanding as Arctic summer sea ice declines. © 2019 2018 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Arctic; climate indicators; melt season; passive microwave; sea ice; seasonal ice zone
语种	英语
scopus关键词	Climate change; Arctic; Climate data records; Climate indicators; Passive microwaves; Regional variability; Satellite passive microwave; Sea ice concentration; Seasonal ice zones; Sea ice; climate change; environmental indicator; ice retreat; microwave imagery; open water; sea ice; seasonal variation; Arctic Ocean; Baffin Bay [Arctic Ocean]; Barents Sea; Bering Sea; Greenland Sea; Kara Sea; Norwegian Sea; Pacific Ocean; Sea of Okhotsk
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154655
作者单位	NASA Goddard Space Flight Center, Cryospheric Sciences Laboratory, Greenbelt, MD 20771, United States; University of Maryland, Earth System Science Interdisciplinary Center, College Park, MD 20740, United States; Polar Science Center, Applied Physics Laboratory, University of Washington, Seattle, WA 98105, United States; North Carolina State University, Cooperative Institute for Climate and Satellites-North Carolina (CSIC-NC), NOAA's National Centers for Environmental Information, Asheville, NC 28801, United States; National Snow and Ice Data Center, CIRES, University of Colorado, Boulder, CO 80309, United States; Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR 97331, United States
推荐引用方式 GB/T 7714	Bliss A.C.,Steele M.,Peng G.,et al. Regional variability of Arctic sea ice seasonal change climate indicators from a passive microwave climate data record[J],2019,14(4).
APA	Bliss A.C.,Steele M.,Peng G.,Meier W.N.,&Dickinson S..(2019).Regional variability of Arctic sea ice seasonal change climate indicators from a passive microwave climate data record.Environmental Research Letters,14(4).
MLA	Bliss A.C.,et al."Regional variability of Arctic sea ice seasonal change climate indicators from a passive microwave climate data record".Environmental Research Letters 14.4(2019).