南海海洋温度锋面时空特征遥感分析OA

Based on sea surface temperature(SST)data of microwave infrared fusion data from 2010 to 2020,the total temperature gradient is calculated using the temperature gradient method,the horizontal change gradient of sea surface temperature in the South China Sea is obtained,and the research on the location of fronts,the average intensity of fronts,and the length of the centerline is carried out.Based on the results of the frontal survey,the distribution characteristics and interannual variations of the South China Sea frontal climate patterns and the correlation between the intensity of the fronts and the monsoon are analyzed.The results show that the eight fronts detected in the South China Sea region are mostly estuarine fronts and shelf fronts,all of which have obvious seasonal patterns.The number of fronts detected in January and February is the highest,and all fronts can be detected.There is a small decrease from March to April,mainly due to the disappearance of the Shelf-Slope Front and the Gulf of Thailand Front.A continuous decreasing trend is observed from May to September,with a minimum value reached in September,and only the Taiwan Strait and Guangdong-Fujian Fronts and the Vietnam coastal front are detected.From October to December,the number of fronts is increased,and fronts are detected in the north of the South China Sea.The correlation coefficient between the mean gradient and wind speed in the Taiwan Strait and Guangdong-Fujian Fronts is above 0.48 throughout the year,while the lowest correlation coefficient between the Vietnam Coastal Front and latitudinal winds is 0.021.The correlation coefficient in winter is higher in comparison with that in summer.