Ocean heat budget analysis on sea surface temperature anomaly in western Indian Ocean during strong-weak Asian summer monsoon

4th International Symposium on LAPAN-IPB Satellite for Food Security and Environmental Monitoring

农业科学;生态环境科学

Fathrio, Ibnu^1,2 ; Manda, Atsuyoshi^3 ; Iizuka, Satoshi^4 ; Kodama, Yasu-Masa^1 ; Ishida, Sachinobu^1

Meteorological Laboratory, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori, Japan^1

National Institute of Aeronautics and Space of Indonesia, West Java, Bandung, Indonesia^2

Climate and Ecosystems Dynamics Division, Graduate School of Bioresources, Mie University, Tsu, Mie, Japan^3

Storm, Flood and Landslide Division, National Research Institute for Earth Science and Disaster Resilience, Ibaraki, Tsukuba, Japan^4

关键词: Asian summer monsoons;    Dominant mechanism;    Equatorial Indian Ocean;    Sea surface temperature anomalies;    Surface heat fluxes;    Surface temperatures;    Vertical advection;    Western indian oceans;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/149/1/012014/pdf
DOI  :  10.1088/1755-1315/149/1/012014

来源: IOP

【 摘 要 】

This study presents ocean heat budget analysis on seas surface temperature (SST) anomalies during strong-weak Asian summer monsoon (southwest monsoon). As discussed by previous studies, there was close relationship between variations of Asian summer monsoon and SST anomaly in western Indian Ocean. In this study we utilized ocean heat budget analysis to elucidate the dominant mechanism that is responsible for generating SST anomaly during weak-strong boreal summer monsoon. Our results showed ocean advection plays more important role to initate SST anomaly than the atmospheric prcess (surface heat flux). Scatterplot analysis showed that vertical advection initiated SST anomaly in western Arabian Sea and southwestern Indian Ocean, while zonal advection initiated SST anomaly in western equatorial Indian Ocean.