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In this study, the effect of surface currents on ASCAT-retrieved winds is investigated based on in-situ observations of both surface winds and currents from 40 open ocean moored buoys in the tropical and mid-latitude oceans. A total of 28,803 data triplets, consisting of buoy-observed wind vectors, current vectors, and ASCAT Level 2 wind vectors, were collected from the dataset spanning over 10 years. It is found that the bias between scatterometer-retrieved wind speed and buoy-observed wind speed is negatively correlated with the ocean surface current speed. The wind speed bias is approximately 0.96 times the magnitude of the downwind surface current. The root-mean-square error between the ASCAT wind speeds and buoy observations is reduced by about 15% if rectification with ocean surface currents is involved. Therefore, it is essential to incorporate surface current information into wind speed calibration, particularly in regions with strong surface currents.<\/jats:p>","DOI":"10.3390\/rs15184630","type":"journal-article","created":{"date-parts":[[2023,9,21]],"date-time":"2023-09-21T21:16:49Z","timestamp":1695331009000},"page":"4630","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Characterizing the Effect of Ocean Surface Currents on Advanced Scatterometer (ASCAT) Winds Using Open Ocean Moored Buoy Data"],"prefix":"10.3390","volume":"15","author":[{"given":"Tianyi","family":"Cheng","sequence":"first","affiliation":[{"name":"Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China"},{"name":"Laoshan Laboratory, Qingdao 266237, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0830-2332","authenticated-orcid":false,"given":"Zhaohui","family":"Chen","sequence":"additional","affiliation":[{"name":"Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China"},{"name":"Laoshan Laboratory, Qingdao 266237, China"}]},{"given":"Jingkai","family":"Li","sequence":"additional","affiliation":[{"name":"Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China"},{"name":"Laoshan Laboratory, Qingdao 266237, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0214-744X","authenticated-orcid":false,"given":"Qing","family":"Xu","sequence":"additional","affiliation":[{"name":"College of Marine Technology, Faculty of Information Science and Engineering, Ocean University of China, Qingdao 266100, China"}]},{"given":"Haiyuan","family":"Yang","sequence":"additional","affiliation":[{"name":"Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China"},{"name":"Laoshan Laboratory, Qingdao 266237, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,9,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"180","DOI":"10.3389\/fmars.2019.00180","article-title":"Coastal mooring observing networks and their data products: Recommendations for the next decade","volume":"6","author":"Bailey","year":"2019","journal-title":"Front. 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