典型文献
Intensity Evolution of Zonal Shear Line over the Tibetan Plateau in Summer: A Perspective of Divergent and Rotational Kinetic Energies
文献摘要：
Based on the ERA5 reanalysis datasets during 1980–2019, a total of eleven zonal shear lines (ZSLs) that caused heavy precipitation and lasted more than 60 hours over the Tibetan Plateau in summer are selected for composite analysis. By decomposing the kinetic energy (K) near the ZSL into divergent and rotational kinetic energies (KD and KR) and the kinetic energy of interaction between the divergent wind and the rotational wind (KRD), the influence of the rotational and divergent winds on the evolution of the ZSL intensity is investigated from the perspective of KD and KR. The main results are as follows. The ZSL is a comprehensive reflection of rotation and convergence. The intensity evolution of ZSL is essentially synchronized with those of K,KR, and KRD but lags behind KD by about three hours. The enhancement of K is mainly contributed by KR, which is governed by the conversion from KD to KR. Furthermore, the increase in the conversion from KD to KR is controlled by the geostrophic effect term Af, which is determined by the joint enhancement of the zonal rotational and meridional divergent wind components (uR and vD). Therefore, the joint enhancement of uR and vD controls the increase of the ZSL intensity, leading to increased precipitation.
文献关键词：
中图分类号：
作者姓名：
Xiaohong BAO;Xiuping YAO
作者机构：
State Key Laboratory on Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China;China Meteorological Administration Training Centre,Beijing 100081,China
文献出处：
引用格式：
[1]Xiaohong BAO;Xiuping YAO-.Intensity Evolution of Zonal Shear Line over the Tibetan Plateau in Summer: A Perspective of Divergent and Rotational Kinetic Energies)[J].大气科学进展（英文版）,2022(07):1021-1033
A类：
ZSLs,KRD,uR,vD
B类：
Intensity,Evolution,Zonal,Shear,Line,Tibetan,Plateau,Summer,Perspective,Divergent,Rotational,Kinetic,Energies,Based,ERA5,reanalysis,datasets,during,total,eleven,zonal,shear,lines,that,caused,heavy,precipitation,lasted,than,hours,summer,are,selected,composite,By,decomposing,kinetic,energy,near,into,divergent,rotational,energies,KD,interaction,between,influence,winds,evolution,intensity,investigated,from,perspective,results,follows,comprehensive,reflection,convergence,essentially,synchronized,those,lags,behind,by,about,three,enhancement,mainly,contributed,which,governed,conversion,Furthermore,controlled,geostrophic,effect,Af,determined,joint,meridional,components,Therefore,controls,leading,increased
AB值：
0.459616
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