Author(s): Yuan Cao; Deyu Zhong; Yinglin Tian
Keywords: Sea Surface Temperature; The East China Sea; Climate Change; Precipitation
Abstract: Sea surface temperature (SST) can affect the ocean-air interaction, influence marine biodiversity and the response of precipitation to climate change. The East China Sea (the ECS) is one of the most important marginal sea of the Pacific Ocean with rich marine resources and high biological productivity. Therefore, the spatial-temporal variation of SST in the ECS and its relation to precipitation on the ECS coast is worth studying. In this paper, firstly, the static spatial distribution of SST in the ECS was analyzed based on the NOAA Reanalysis data. The result showed that the static distribution of monthly mean SST in the ECS was nearly southeast-northwest (SE-NW), and the seasonal mean standard deviation of regional difference of SST was greater in winter (5.286℃) than in summer (2.350℃). Secondly, the spatial-temporal variation of SST in the ECS from 1981 to 2021 was investigated using X-11 method on the yearly scale. As indicated by the results, a continuous warming trend of SST in the ECS was observed, and sea surface temperature anomaly (SSTA) in the ECS showed periodic oscillations of 5 years. The interannual rate of variation of SST in the ECS showed a SE-NW distribution, low in SE and high in NW (the maximum rate of variation reached 0.588℃/a). Lastly, based on the monthly gridded surface prediction data from National Meteorological Information Center, the method of Time Lag Cross Correlation (TLCC) was employed to analyze the relation between SST in the ECS and precipitation on the ECS coast.