Changes of the East Asia Summer Monsoon Precipitation Over Northeast Asia in Projected Future Climate Scenario
Abstract
The East Asia Summer Monsoon (EASM) is an important factor that can affect the temperature and precipitation in Northeast Asia. One major reason for the changes in the EASM is warming in future climates are due to rising sea surface temperatures in the Northeast Asia area. Increased lower level temperature intensifies thermal instability and enhances vertical upward motion, leading to increased convective precipitation. The convective rain ratio (CRR) is expressed as the amount of convective precipitation relative to total precipitation. The larger this value, the stronger the summer monsoon in East Asia.
In this study, we analyze the precipitation characteristics related to the EASM using downscaled climate scenario data from the Coordinated Regional Climate Downscaling Experiment (CORDEX) project. Sensitivity experiments are based on Regional Climate Model (RegCM) and employed GFDL-ESM2M RCP 2.6 and RCP 8.5 scenarios as initial and boundary forcing data. Through comparison of the CRR in different scenarios, identify the precipitation characteristics and its variability in future regional climates.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.A23H3017J
- Keywords:
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- 3305 Climate change and variability;
- ATMOSPHERIC PROCESSES;
- 3314 Convective processes;
- ATMOSPHERIC PROCESSES;
- 3373 Tropical dynamics;
- ATMOSPHERIC PROCESSES