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介绍了在过去的5年中根据用户需求FY-3卫星可见光红外扫描辐射计(VIRR)海温产品算法和产品设计的进展。给出了其中主要的国内外海温算法。介绍了FY-3卫星VIRR海温产品的进展:FY-3A星海表温度(SST)用可见光阈值进行云检测,其SST值偏低;FY-3B星SST用云检测产品中的确信晴空进行分纬度带的白天MCSST算法,但整体海温仍偏低;FY-3C星SST在B星的基础上进行了优化,首次反演了夜间海温,并提供了逐像元的质量标识及海温的气候偏差,设计了5km全球海温,实现了5min段海温产品存档,提高了风云海温产品的可靠性、可用性和精度。给出了FY-3C星VIRR海温产品的图像及质量检验情况。归纳了海温产品的同一框架下多级别、多源、高分辨率的发展趋势。将风云卫星海温产品规格与高分辨率海温科学组(GHRSST)GDS2.0的交叉比对,海温科学组认为中国在海温方面的能力在不断增强。研究认为:长序列海温产品重处理以确保海温产品的一致性非常必要,海温产品需采用国际通用海温产品规格。
The progress of algorithm and product design for SST temperature of FY-3 satellite visible infrared scanning radiometer (VIRR) based on user requirements in the past 5 years is introduced. The main domestic and international sea temperature algorithms are given. The progress of FY-3 satellite VIRR sea temperature product is introduced. The FY-3A satellite sea surface temperature (SST) is detected by the visible light threshold for cloud detection, and the SST value is low. FY-3B star SST Daytime MCSST algorithm, but the overall SST is still low; the FY-3C SST has been optimized on the basis of the B-star, for the first time inverting the SST at night and providing pixel-by-pixel quality identification and SST Of the global warming, designed a global sea temperature of 5km, achieved 5min sea temperature product archives, and improved the reliability, availability and accuracy of the Storm Wind Temperature Products. Given the FY-3C Star VIRR SST product image and quality inspection. Summarized the development trend of multi-level, multi-source and high-resolution under the same framework of SST products. Comparing the FY-SST product specification with the GHRSST GDS 2.0, the SSTT believes that China’s capability in SST is on the rise. According to the research, it is necessary to re-process the long series of sea temperature products to ensure the consistency of the sea temperature products. The sea temperature products need to adopt the international common sea temperature product specifications.