Work

Sea surface temperatures in the South China Sea as a natural thermostat to the rainfall over Borneo: preliminary results

Year: 2021

Type: conference-paper

Abstract: Community Climate System Model version 4 (CCSM4) simulated warmer sea surface temperatures (SSTs) in the South China Sea (SCS) for the mid-Holocene scenario compared to the pre-Industrial. Previous sensitivity experiments using the atmospheric component of the CCSM4, the Community Atmospheric Model version 4 (CAM4), showed that warmer SSTs in the SCS suppresses rainfall over Borneo, which is in-contrary to the effect of the stronger insolation over the island. In this study, we show that warmer SSTs in the SCS, as simulated in the CCSM4, is responding to a weaker low-level wind impacted by the stronger convectional rainfall over Borneo due to stronger insolation. These results suggest that warmer SSTs in the SCS might act as a negative feedback which damps the effect of the stronger insolation on rainfall changes over Borneo.

Source: IOP Conference Series Earth and Environmental Science

DOI: 10.1088/1755-1315/925/1/012009

Authors: Y S Djamil, R K Lestari, X Wang

Institutions: Indonesian Institute of Sciences, Institute for Globally Distributed Open Research and Education, Ronin Institute, Nanyang Technological University, Earth Observatory of Singapore

Language: English

Topic: Climate variability and models

Subfield: Global and Planetary Change

Field: Environmental Science

Domain: Physical Sciences

SDG: Climate action

Open Access status: diamond

Funder: Earth Observatory of Singapore