{"id":36340,"date":"2026-03-20T09:32:27","date_gmt":"2026-03-20T03:47:27","guid":{"rendered":"https:\/\/www.revoscience.com\/en\/?p=36340"},"modified":"2026-03-20T09:32:30","modified_gmt":"2026-03-20T03:47:30","slug":"satellite-radar-reveals-arctic-eddy-life-cycle","status":"publish","type":"post","link":"https:\/\/www.revoscience.com\/en\/satellite-radar-reveals-arctic-eddy-life-cycle\/","title":{"rendered":"Satellite Radar Reveals Arctic Eddy Life Cycle"},"content":{"rendered":"\n
\"\"
Map of the study area. The black frame indicates the coverage of the Sentinel-1 SAR image acquired at 07:29:11 UTC on 2021 August 25. The red frame delineates the ROI containing the ice-edge eddy<\/sup><\/em><\/figcaption><\/figure>\n\n\n\n

BEIJING<\/strong> \u2014 A research team from the Aerospace Information Research Institute of the Chinese Academy of Sciences has developed a satellite-based method to track the full life cycle of ocean eddies forming along Arctic sea-ice edges, offering new insights into polar ocean dynamics.<\/p>\n\n\n\n

By combining sequential synthetic aperture radar (SAR) images with hydrodynamic modeling, the researchers reconstructed surface current fields and retrieved key dynamical parameters of a polar eddy throughout its evolution. Their findings, published in the Journal of Remote Sensing<\/em>, highlight how eddies influence sea-ice transport, ocean mixing, and energy exchange between the ocean and atmosphere.<\/p>\n\n\n\n

The study focused on an eddy in the Fram Strait, a critical passage between the Arctic Ocean and the North Atlantic. Using Sentinel-1A and Sentinel-1B satellite data, the team tracked sea-ice displacement to derive high-resolution current fields, which were then analyzed with a vortex-based hydrodynamic model. Results showed the eddy expanded from 28 km to over 35 km in radius, with circulation strength peaking at 4.5 \u00d7 10\u2074 m\u00b2\/s during its 22-day life cycle.<\/p>\n\n\n\n

Researchers said the new framework allows continuous monitoring of eddy evolution, overcoming challenges posed by harsh polar conditions and limited in-situ measurements. \u201cThese eddies strongly influence sea-ice redistribution and ocean mixing in Arctic waters,\u201d the team noted, adding that the approach could improve climate models and understanding of polar ocean\u2013ice interactions.<\/p>\n\n\n\n

The method integrates SAR remote sensing with advanced physical modeling, enabling quantitative analysis of eddy growth, maturity, and decay. Scientists believe expanding high-resolution SAR datasets will allow simultaneous tracking of multiple eddies, enhancing knowledge of Arctic circulation and its role in global climate processes.<\/p>\n","protected":false},"excerpt":{"rendered":"

BEIJING \u2014 A research team from the Aerospace Information Research Institute of the Chinese Academy of Sciences has developed a satellite-based method to track the full life cycle of ocean eddies forming along Arctic sea-ice edges, offering new insights into polar ocean dynamics.<\/p>\n","protected":false},"author":2,"featured_media":36341,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-36340","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environment"],"featured_image_urls":{"full":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-200x200.webp",200,200,true],"medium":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-675x441.webp",675,441,true],"medium_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"1536x1536":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"2048x2048":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"ultp_layout_landscape_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"ultp_layout_landscape":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"ultp_layout_portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-600x457.webp",600,457,true],"ultp_layout_square":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-600x457.webp",600,457,true],"newspaper-x-single-post":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel.webp",700,457,false],"newspaper-x-recent-post-big":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-550x360.webp",550,360,true],"newspaper-x-recent-post-list-image":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-95x65.webp",95,65,true],"web-stories-poster-portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-640x457.webp",640,457,true],"web-stories-publisher-logo":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-96x96.webp",96,96,true],"web-stories-thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/03\/sentinel-150x98.webp",150,98,true]},"author_info":{"info":["RevoScience"]},"category_info":"Environment<\/a>","tag_info":"Environment","comment_count":"0","_links":{"self":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/36340","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/comments?post=36340"}],"version-history":[{"count":1,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/36340\/revisions"}],"predecessor-version":[{"id":36342,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/36340\/revisions\/36342"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media\/36341"}],"wp:attachment":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media?parent=36340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/categories?post=36340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/tags?post=36340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}