Computing Coastal Ocean Surface Currents from MODIS and VIIRS Satellite Imagery
Radio Oceanography Laboratory, School of Electronic Information, Wuhan University, Wuhan 430072, China
Colorado Center for Astrodynamics Research, Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80309, USA
Author to whom correspondence should be addressed.
Received: 26 August 2017 / Revised: 1 October 2017 / Accepted: 5 October 2017 / Published: 24 October 2017
We explore the potential of computing coastal ocean surface currents from Moderate-Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) satellite imagery using the maximum cross-correlation (MCC) method. To improve on past versions of this method, we evaluate combining MODIS and VIIRS thermal infrared (IR) and ocean color (OC) imagery to map the coastal surface currents and discuss the benefits of this combination of sensors and optical channels. By combining these two sensors, the total number of vectors increases by
. In addition, we also make use of the different surface patterns of IR and OC imagery to improve the tracking performance of the MCC method. By merging the MCC velocity fields inferred from IR and OC products, the spatial coverage of each individual MCC field is increased by
relative to the vectors derived from OC images. The root mean square (RMS) error of the merged currents is 18
compared with coincident HF radar surface currents. A 5-year long time serious of merged MCC computed currents was used to investigate the current structure of the California Current (CC). Weekly, seasonal, and 5-year mean flows provide a unique space-time picture of the oceanographic variability of the CC.
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Liu, J.; Emery, W.J.; Wu, X.; Li, M.; Li, C.; Zhang, L. Computing Coastal Ocean Surface Currents from MODIS and VIIRS Satellite Imagery. Remote Sens. 2017, 9, 1083.
Liu J, Emery WJ, Wu X, Li M, Li C, Zhang L. Computing Coastal Ocean Surface Currents from MODIS and VIIRS Satellite Imagery. Remote Sensing. 2017; 9(10):1083.
Liu, Jianfei; Emery, William J.; Wu, Xiongbin; Li, Miao; Li, Chuan; Zhang, Lan. 2017. "Computing Coastal Ocean Surface Currents from MODIS and VIIRS Satellite Imagery." Remote Sens. 9, no. 10: 1083.
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