Journal of Marine Sciences ›› 2020, Vol. 38 ›› Issue (3): 58-64.DOI: 10.3969/j.issn.1001-909X.2020.03.006

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Two improved Radiative Transfer Equation Algorithm for retrieving sea surface temperature from HJ-1B IRS data

HUANG Lu1,2, ZHANG Caiyun*1, LI Yan3, SHAO Hao4, YANG Xingchen2   

  1. 1. College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China;
    2. Preparatory Office of Zhangzhou Base, NOTC, Xiamen 361007, China;
    3. Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen 361102, China;
    4. Unit No.91039 of PLA, Beijing 102401, China
  • Received:2020-05-01 Published:2020-09-15

Abstract: In order to solve the problem that there is a large deviation in retrieving SST by using reanalysis data of NCEP and Radiative Transfer Equation Algorithm, taking HJ-1B SST retrieval as an example and starting from the correction of the atmospheric transmittance, two improved Radiative Transfer Equation Algorithm: algorithms of the Center Point Algorithm and the Mean Point Method are proposed, and they are verified by MODIS SST and buoy SST. The two improved algorithms have improved the atmospheric transmittance deviation and HJ SST retrieval deviation significantly, and both HJ SST and MODIS SST show significant consistency. The MODIS SST verification shows that the average deviation and mean square error of the two improved algorithms are about 0.5 ℃. The buoy SST verification shows that the Mean Point Algorithm has higher retrieval accuracy, which average deviation is 0.55 ℃, the average deviation of the Center Point Algorithm is 0.81 ℃.

Key words: NCEP, Radiative Transfer Equation Algorithm, atmospheric transmittance, HJ SST, MODIS SST

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