@article {cheng_characterizing_2023,
	title = {Characterizing the Effect of Ocean Surface Currents on Advanced Scatterometer (ASCAT) Winds Using Open Ocean Moored Buoy Data},
	journal = {Remote Sensing},
	volume = {15},
	number = {18},
	year = {2023},
	note = {Number: 18 Publisher: Multidisciplinary Digital Publishing Institute},
	pages = {4630},
	abstract = {The ocean surface current influences the roughness of the sea surface, subsequently affecting the scatterometer{\textquoteright}s measurement of wind speed. 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.},
	keywords = {ASCAT, moored buoys, ocean surface current, sea surface wind},
	issn = {2072-4292},
	doi = {10.3390/rs15184630},
	url = {https://www.mdpi.com/2072-4292/15/18/4630},
	author = {Cheng, Tianyi and Chen, Zhaohui and Li, Jingkai and Xu, Qing and Yang, Haiyuan}
}
