Seasonal characteristics and long-term trend analysisof SST in the global ocean

In this paper, the seasonal characteristics and long-term trend of SST (Sea Surface Temperature) in the Global Ocean were analyzed.Results show that, (1) The SST in most of global ocean has obvious increasing trend, except southwest sea area of Icelandic, South Pole and the North Pole waters.This phenomenon has good accordance with global warm trend.The long term trend of the global SST shows obvious regional difference.Areas with strong increasing trend are mainly located in the middle waters of the North Pacific Ocean (0.003~0.006℃/a), equator waters of the Pacific Ocean (0.004~0.006℃/a), most waters of the South Atlantic Ocean (0.006~0.01℃/a), west of the South Indian Ocean (0.006~0.009℃/a).(2) The long-term trend of SST in some regions is dominated by summer, while some regions dominated by winter.(3) There are there warm pools in global ocean, and they have significant 2.78~3.13 years, 3.45 years, 5.26~5.88 years periods and above 100 years.