摘要
基于2003—2015年的国产自主SST多源遥感融合数据,以中国南海及邻近海域为研究区,开展了SST时空分布和变化特征分析,结果表明:SST的空间分布总体呈现南高北低的特点,在研究区内,纬度每降低1°,SST增大约0.19℃,在近赤道区域,纬度每降低1°,SST约增大0.30℃;SST区域极大值的季节变化特征明显,冬季SST极大值均分布于5°N以南海域,夏季多分布于15°N以北海域,春秋两季分布介于冬春两季之间,秋季略偏向南海北部,春季略偏向南海南部。从时间变化上看,研究区SST呈现震荡上升趋势,上升速率约0.04℃/a;南海南部SST变化比较平缓,SST年变化速率一般小于0.04℃/a;近岸海域受人类活动的影响,SST年变化速率一般在0.05℃/a以上;在河口沿岸海域,受温度较低的冲淡水影响,SST升温不明显。
Based on the SST data produced by China through merging multi-source satellite data from 2003 to 2015,the SST spatio-temporal distribution and variability characteristics in the South China Sea and its adjacent waters are analyzed.The spatial pattern is characterized by the higher SSTin the southern part and the lower one in the northern region.When the latitude decreases by 1°,SSTincreases by about 0.19℃（0.30 ℃）for the whole study area（the region near equator）.The spatial distribution of SSTregional maxima shows obvious seasonal variations.In winter,the maxima are found in the south of 5°N;in summer,the maxima are located in the north of 15°N;in spring and autumn,the positions of maxima are between those of winter and spring,and they are slightly toward the north（south）part of the South China Sea in autumn（spring）.Analysis of temporal variability shows that SSTin the study area increases with a rate of about 〈0.04 ℃/a.The rate is 0.04 ℃/a in the southern part of SCS,and 〉0.05 ℃/a in the coastal waters due to the impact of human activities,whereas no significant SSTvariability is found in the estuary due to the impact of river runoff with low temperature.
作者
孙伟富
张杰
孟俊敏
王进
苗俊伟
SUN Wei fu;ZHANG Jie;MENG Jun -min;WANG Jin;MIAO Jun wei(The First Institute of Oceanography,SOA,Qingdao 266061,China;College of Physics,Qingdao University,Qingdao 266071,China;College of Oeomatics,Shandong Universit y of Science and Technology,Qingdao 266590,China)
出处
《海洋科学进展》
CAS
CSCD
北大核心
2018年第3期402-411,共10页
Advances in Marine Science
基金
国家重点研发计划项目--海洋气候数据集生成与分析(2016YFA0600102)
全球变化与海气相互作用专项--南海SCSYGST04区块海洋环境参数遥感调查II期(GASI-02-SCS-YGST2-04)
关键词
海面温度
遥感
辐射计
中国南海
SST
remote sensing
radiometer
South China Sea
