Climatic evolution characteristics of the coupled main mode of the sea surface temperature and net sea surface heat flux in the tropical Indian Ocean
Based on a total of 49a sea surface temperature(SST)data of SODA and net sea surface heat flux data of ECMWF from January 1960 to December 2008,the climatic evolution characteristics of the coupled main mode of the two anomalies were studied in the tropical Indian Ocean by using moving SVD method.The main results were as follows:(1)The coupling effect was gradually strengthened in the evolution process,the correlations between the two fields maintain well.(2)The sea surface net heat flux anomaly can better explain the basin variations of the SSTA field itself in most periods with the largest variations locating in the coastal area of Sumatra-Java and the sea area south of 20°S.And under its influence,the sea basin showed a warming trend in most periods.(3)The spatial distribution of the two fields of the coupled main mode changed significantly once from 1961～1970 to 1962～1971,under the significant influence of the year 1971.(4)The SSTA field changed significantly in the north-east Indian Ocean and the South China Sea with obvious positive change areas,while the sea area south of 20°S showed obvious negative changes.The net sea surface heat flux anomaly filed showed signifi-cant positive and negative changed in the South China Sea,the equatorial eastern Indian Ocean and somewhere east of Madagascar,respectively.
tropical Indian OceanSSTAnet sea surface heat fluxmoving SVDmain modespatial-temporal evolution
NETL
NSTL
万方数据
