Authors: Ran Liu Changlin Chen Guihua Wang
Publish Date: 2016/02/04
Volume: 33, Issue: 4, Pages: 504-510
Abstract
Tropical cyclone heat potential TCHP in the ocean can affect tropical cyclone intensity and intensification In this paper TCHP change under global warming is presented based on 35 models from CMIP5 Coupled Model Intercomparison Project Phase 5 As the upper ocean warms up the TCHP of the global ocean is projected to increase by 1406 in the 21st century under the RCP45 +45 W m2 Representative Concentration Pathway scenario The increase is particularly significant in the western Pacific northwestern Indian and western tropical Atlantic oceans The increase of TCHP results from the ocean temperature warming above the depth of the 26°C isotherm D26 the deepening of D26 and the horizontal area expansion of SST above 26°C Their contributions are 694 225 and 81 respectively Further a suite of numerical experiments with an Ocean General Circulation Model OGCM is conducted to investigate the relative importance of wind stress and buoyancy forcing to the TCHP change under global warming Results show that sea surface warming is the dominant forcing for the TCHP change while wind stress and sea surface salinity change are secondary
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