气候变化领域集成服务门户(CCPortal): Large Mesoscale Eddies in the Western Arctic Ocean From Satellite Altimetry Measurements

CCPortal

DOI	10.1029/2020JC016670
	Large Mesoscale Eddies in the Western Arctic Ocean From Satellite Altimetry Measurements
	Kubryakov A.A.; Kozlov I.E.; Manucharyan G.E.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	Eddies in the Western Arctic play an important role in transporting heat, salt, and biogeochemical tracers across the continental shelf and within the deep basins. However, comprehensive observations of the regional and temporal variability of the eddy field characteristics are difficult to obtain remotely due to the presence of sea ice, and the available in situ observations remain relatively sparse. Nonetheless, with continuing global warming, increasingly large areas of the Arctic Ocean become seasonally ice-free and can be observed with remote sensing. Here, we use satellite altimetry data acquired between 1993 and 2018 over the seasonally ice-free Western Arctic Ocean to detect the signatures and hot spots of large mesoscale eddies, validating their detection method using independent optical and infrared satellite observations. The altimetry measurements were most frequent from July to October, revealing signatures of over 2000 individual eddies that were roughly equally partitioned between cyclones and anticyclones, with radii between 20 and 60 km and characteristic orbital velocities of about 0.05–0.4 m/s. A maximum number of eddies were detected in October in the Beaufort Sea and in November in the Chukchi Sea. The interannual variability of eddies in the Beaufort Sea is correlated with variations of intensity and freshwater content in the Beaufort Gyre. Using the regional eddy statistics, we discuss the potential eddy formation mechanisms over the key regions of their observations in the Amundsen Gulf, the area adjacent to the Mackenzie River mouth, the western part of the Beaufort Sea, and the Chukchi Sea. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	altimetry; Arctic; interannual variability; mesoscale eddies; the Beaufort Sea; the Chukchi Sea
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/186350
作者单位	Marine Hydrophysical Institute of RAS, Sevastopol, Russian Federation; School of Oceanography, University of Washington, Seattle, DC, United States
推荐引用方式 GB/T 7714	Kubryakov A.A.,Kozlov I.E.,Manucharyan G.E.. Large Mesoscale Eddies in the Western Arctic Ocean From Satellite Altimetry Measurements[J],2021,126(5).
APA	Kubryakov A.A.,Kozlov I.E.,&Manucharyan G.E..(2021).Large Mesoscale Eddies in the Western Arctic Ocean From Satellite Altimetry Measurements.Journal of Geophysical Research: Oceans,126(5).
MLA	Kubryakov A.A.,et al."Large Mesoscale Eddies in the Western Arctic Ocean From Satellite Altimetry Measurements".Journal of Geophysical Research: Oceans 126.5(2021).