气候变化领域集成服务门户(CCPortal): Eddies in the North Greenland Sea and Fram Strait From Satellite Altimetry, SAR and High-Resolution Model Data

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DOI	10.1029/2019JC015832
	Eddies in the North Greenland Sea and Fram Strait From Satellite Altimetry, SAR and High-Resolution Model Data
	Bashmachnikov I.L.; Kozlov I.E.; Petrenko L.A.; Glok N.I.; Wekerle C.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	In this study, we investigate eddy dynamics in the northern Greenland Sea and the Fram Strait using AVISO altimetry, spaceborne synthetic aperture radar (SAR), and Finite Element Sea ice-Ocean Model (FESOM) high-resolution numerical model data. In the region, eddies are thought to play an important role in the redistribution of the warmer and saltier Atlantic Water between the Arctic Ocean and the areas of deep convection in the central Greenland Sea. We found that eddies detected in AVISO and in SAR form two complementary data sets of large mesoscale eddies (with typical radii of 30–50 km) and of small mesoscale/submesoscale eddies (with typical radii of 1–5 km and not exceeding 30 km), respectively. For large mesoscale eddies, the number of cyclones and anticyclones is approximately the same, while for submesoscale eddies, cyclones are strongly dominating. The limitations and possible biases in each of the data sets are discussed and cross-validated against FESOM results. It is noted that the most energetic eddies are concentrated along the major currents and in the northern part of the region. Eddy translations follow the mean currents in their overall cyclonic circulation around the northern Greenland Sea. A convergence of the eddies toward the Nordbukta area is detected. On seasonal time scale, a higher number of more intense mesoscale eddies is observed during winter, associated with a quasi-simultaneous intensification of the mean currents. Model results also show an increase in the number of small eddies in spring-early summer attributed to the decay of large eddies, while in late autumn, the opposite tendency suggests eddy merger. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	eddies; FESOM model; Fram Strait; SAR; satellite altimetry; the North Greenland 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/186815
作者单位	St. Petersburg State University, Department of Oceanography, St. Petersburg, Russian Federation; Nansen International Environmental and Remote Sensing Centre, St. Petersburg, Russian Federation; Marine Hydrophysical Institute of RAS, Sevastopol, Russian Federation; Arctic and Antarctic Research Institute, St. Petersburg, Russian Federation; Climate Dynamics, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
推荐引用方式 GB/T 7714	Bashmachnikov I.L.,Kozlov I.E.,Petrenko L.A.,et al. Eddies in the North Greenland Sea and Fram Strait From Satellite Altimetry, SAR and High-Resolution Model Data[J],2020,125(7).
APA	Bashmachnikov I.L.,Kozlov I.E.,Petrenko L.A.,Glok N.I.,&Wekerle C..(2020).Eddies in the North Greenland Sea and Fram Strait From Satellite Altimetry, SAR and High-Resolution Model Data.Journal of Geophysical Research: Oceans,125(7).
MLA	Bashmachnikov I.L.,et al."Eddies in the North Greenland Sea and Fram Strait From Satellite Altimetry, SAR and High-Resolution Model Data".Journal of Geophysical Research: Oceans 125.7(2020).