气候变化领域集成服务门户(CCPortal): Estimation of Sea Ice Production in the Bering Sea From AMSR-E and AMSR2 Data, With Special Emphasis on the Anadyr Polynya

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DOI	10.1029/2019JC016023
	Estimation of Sea Ice Production in the Bering Sea From AMSR-E and AMSR2 Data, With Special Emphasis on the Anadyr Polynya
	Ohshima K.I.; Tamaru N.; Kashiwase H.; Nihashi S.; Nakata K.; Iwamoto K.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	We created, for the first time, a map of sea ice production in the Bering Sea, based on thin-ice thickness data from the Advanced Microwave Scanning Radiometers (AMSR-E and AMSR2) with a heat flux calculation. We used the AMSR-E thin-ice algorithm developed for the Arctic Ocean with some modification. We provided a 16-yr data set of ice production from the 2002/2003 to 2018/2019 seasons, excepting the 2011/2012 season. It is found that the Anadyr polynya has by far the highest sea ice production (average of 93 km3/yr) and accounts for more than 30% of all polynya ice production in the Bering Sea. The combined ice production in the Anadyr, Anadyr Strait, and St. Lawrence polynyas becomes the second-largest ice production during the AMSR-E period in the Northern Hemisphere. It is considered that the high ice production in the Anadyr polynya produces cold, saline, nutrient-rich water, so-called Anadyr Water, which would contribute to the formation of the cold halocline layer and high biological productivity. The ice production in the Anadyr polynya shows very large year-to-year variability. The record low ice extent year of the 2017/2018 season is also the lowest ice production year; the production is only one tenth of the highest value, observed during the 2015/2016 season. The high sensitivity of the wind direction and strength to the location of the Aleutian Low causes this large variability. We also built reconstruction schemes of ice production in the polynyas, using the offshore wind and air temperature, by multiple linear regression. ©2020. The Authors.
英文关键词	Aleutian Low; Bering Sea; coastal polynya; dense water; passive microwave; sea ice production
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186799
作者单位	Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Arctic Research Center, Hokkaido University, Sapporo, Japan; Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan; National Institute of Polar Research, Tachikawa, Japan; National Institute of Technology, Tomakomai College, Tomakomai, Japan; Fisheries Research Division, City of Mombetsu, Mombetsu, Japan; Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Japan
推荐引用方式 GB/T 7714	Ohshima K.I.,Tamaru N.,Kashiwase H.,et al. Estimation of Sea Ice Production in the Bering Sea From AMSR-E and AMSR2 Data, With Special Emphasis on the Anadyr Polynya[J],2020,125(7).
APA	Ohshima K.I.,Tamaru N.,Kashiwase H.,Nihashi S.,Nakata K.,&Iwamoto K..(2020).Estimation of Sea Ice Production in the Bering Sea From AMSR-E and AMSR2 Data, With Special Emphasis on the Anadyr Polynya.Journal of Geophysical Research: Oceans,125(7).
MLA	Ohshima K.I.,et al."Estimation of Sea Ice Production in the Bering Sea From AMSR-E and AMSR2 Data, With Special Emphasis on the Anadyr Polynya".Journal of Geophysical Research: Oceans 125.7(2020).