Publications

Ye, XM; Liu, JQ; Lin, MS; Ding, J; Zou, B; Song, QJ; Teng, Y (2022). Evaluation of Sea Surface Temperatures Derived From the HY-1D Satellite. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 15, 654-665.

Abstract
Global sea surface temperatures (SSTs) are detected by the Chinese ocean color and temperature scanner (COCTS) instruments aboard the HaiYang (HY)-1C and HY-1D satellites. In this study, the SSTs derived from the COCTS instrument on the HY-1D (COCTS/HY-1D) satellite and a nonlinear SST algorithm with corresponding coefficients were introduced. The COCTS/HY-1D SSTs recorded from April 26 to August 31, 2021, were evaluated against water temperature measurements taken at depths above 1 m from the in situ Quality Monitor system; root-mean-square errors (RMSEs) of 0.65 and 0.71 degrees C and robust standard deviations (RSDs) of 0.51 and 0.47 degrees C were obtained for the daytime and nighttime SSTs, respectively, using a spatiotemporal matching window of 4 h and 2.5 km. Daily gridded SSTs derived from COCTS/HY-1D were compared with those obtained from the visible infrared imaging radiometer suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (S-NPP) satellite in the same period, and RMSEs of 0.67 +/- 0.06 and 0.81 +/- 0.06 degrees C and RSDs of 0.49 +/- 0.04 and 0.58 +/- 0.05 degrees C were obtained for the daytime and nighttime SSTs, respectively. The COCTS/HY-1D-derived SSTs covering Gulf Stream waters were cross-validated against the VIIRS/S-NPP data as a case study, and RMSEs of 0.53 and 0.47 degrees C for the daytime and nighttime, respectively, were obtained.

DOI:
10.1109/JSTARS.2021.3137230

ISSN:
2151-1535