GAO Shanhong, WU Wei, ZHU Leilei, FU Gang, HUANG Bin. Detection of nighttime sea fog/stratus over the Huanghai Sea using MTSAT-1R IR data[J]. Acta Oceanologica Sinica, 2009, (2): 23-35.
Citation:
GAO Shanhong, WU Wei, ZHU Leilei, FU Gang, HUANG Bin. Detection of nighttime sea fog/stratus over the Huanghai Sea using MTSAT-1R IR data[J]. Acta Oceanologica Sinica, 2009, (2): 23-35.
GAO Shanhong, WU Wei, ZHU Leilei, FU Gang, HUANG Bin. Detection of nighttime sea fog/stratus over the Huanghai Sea using MTSAT-1R IR data[J]. Acta Oceanologica Sinica, 2009, (2): 23-35.
Citation:
GAO Shanhong, WU Wei, ZHU Leilei, FU Gang, HUANG Bin. Detection of nighttime sea fog/stratus over the Huanghai Sea using MTSAT-1R IR data[J]. Acta Oceanologica Sinica, 2009, (2): 23-35.
A dual channel difference (DCD) method is applied to detect nighttime sea fog/stratus over the Huanghai Sea using the infrared (IR) data of shortwave (3.5-4.0 μm) and longwave (10.3-11.3 μm) channels from the Multi-functional Transport Satellite (MTSAT)-1R, i.e., shortwave minus longwave brightness temperature difference (SLTD). Twenty-four sea fog events over the Huanghai Sea during March to July of 2006 and 2007 are chosen to determine a suitable value of SLTD for nighttime sea fog/stratus detection, and it is found that the value of -5.5-2.5℃ can be taken as a criterion. Two case examples of sea fog events are especially demonstrated in detail utilizing the criterion, and the results show that the derived sea fog/stratus coverage is quite reasonable. This coverage information is very helpful to analyze the formation and evolution of sea fog/stratus during night and can provide sea fog researchers with observational evidences for model results verification. However, more efforts are needed to further obtain vertical extent information of sea fog/stratus and attempt to discriminate between sea fog and stratus.
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