台风彩虹快速增强期间辐射过程对动能和位能收支的影响  

Radiative Effects on Kinetic and Potential Energy Budgets Associated with Rapid Intensification of Typhoon Mujigae

作　　者：张弛[1] 李小凡 刘瑞[1] ZHANG Chi;LI Xiaofan;LIU Rui(Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province,School of Earth Sciences,Zhejiang University,Hangzhou 310058)

机构地区：[1]浙江大学地球科学学院浙江省地学大数据与地球深部资源重点实验室,杭州310058

出　　处：《大气科学》2024年第6期2342-2352,共11页Chinese Journal of Atmospheric Sciences

基　　金：国家自然科学基金项目41930967,42105011。

摘　　要：本研究通过中尺度WRF模式对2015年台风彩虹进行一系列敏感性试验,分析了快速增强期间辐射对动能和位能收支的影响。研究发现,辐射对台风的对称旋转动能和对称位能都有明显影响,其中红外长波辐射主要增强了台风的对称旋转动能,太阳短波辐射则增强了对称位能。去除辐射的敏感性试验与仅考虑太阳短波辐射的敏感性试验表明红外长波辐射导致大气不稳定,使得对称位能向对称辐散动能的转化增强,并通过对称辐散动能向对称旋转动能的转换进一步增强了对称旋转动能。This study investigated radiative effects on kinetic and potential energy budgets associated with the rapid intensification of typhoon Mujigae in 2015 by conducting sensitivity experiments using Weather Research and Forecasting(WRF)model simulations.The authors found that the radiations have a significant effect on the symmetric rotational kinetic energy and symmetric potential energy of typhoon.The infrared longwave radiation mainly enhances the symmetric rotational kinetic energy,the shortwave radiation being the main contributor to the symmetric potential energy.The comparison between sensitivity experiments excluding radiative effects and retaining solar shortwave radiative effects reveals that the inclusion of infrared longwave radiative effects destabilizes the moist atmosphere and augments the conversion from symmetric potential energy to symmetric divergent kinetic energy.This further enhances symmetric rotational kinetic energy through the strengthened conversion from symmetric divergent kinetic energy to symmetric rotational kinetic energy.

关 键 词：台风彩虹 太阳辐射 红外辐射 动能收支 位能收支 

分 类 号：P458[天文地球—大气科学及气象学]