Comparison of Algorithms for Sea Surface Current Retrieval using Himawari-8/AHI Data
Himawari-8/AHI 자료를 활용한 표층 해류 산출 알고리즘 비교

Hee-Ae Kim, Kyung-Ae Park, Ji-Eun Park
2016 Korean Journal of Remote Sensing  
Sea surface currents were estimated by applying the Maximum Cross Correlation (MCC), Zero-mean Sum of Absolute Distances (ZSAD), and Zero-mean Sum of Squared Distances (ZSSD) algorithms to Himawari-8/Advanced Himawari Imager (AHI) thermal infrared channel data, and the comparative analysis was performed between the results of these algorithms. The sea surface currents of the Kuroshio Current region that were retrieved using each algorithm showed similar results. The ratio of errors to the total
more » ... number of estimated surface current vectors had little difference according to the algorithms, and the time required for sea surface current calculation was reduced by 24% and 18%, relative to the MCC algorithm, for the ZSAD and ZSSD algorithms, respectively. The estimated surface currents were validated against those from satellite-tracked surface drifter and altimeter data, and the accuracy evaluation of these algorithms showed results within similar ranges. In addition, the accuracy was affected by the magnitude of brightness temperature gradients and the time interval between satellite image data.
doi:10.7780/kjrs.2016.32.6.4 fatcat:ovihohexmneefghn4j7oaedhhm