INDIAN OCEAN AND TEMPERATURE VARIABILITY IN SOUTHEAST ASIA

Abstract

The purpose of this study is to determine the relationship between sea surface temperature (SST) and surface air temperature (SAT) in Southeast Asia, thereby building an index for SAT warnings. This index is built based on SST in the region with the highest Pearl correlation coefficient. The data for this survey are SST and SAT fields from 1979 to 2019, which are reanalyzed data of NCAR/ NCEP. The SST survey area is located in the tropics and subtropics, with latitudes from 40^oS to 40^oN over the Indian and Pacific Oceans. Based on the correlation coefficient survey, the region for monitoring and warning was found in the central equatorial Indian Ocean region. SST in this region has a good relationship with SAT in Southeast Asia with a lag time of about one month. Compared with the El Niño monitoring indicators, SST in this region has a higher correlation coefficient with SAT.