Implementation of the Land Surface Processes into a Vector Vorticity Equation Model (VVM) to Study its Impact on Afternoon Thunderstorms over Complex Topography in Taiwan

In this study, we aim to evaluate the impact of fast land-atmosphere interactions on the afternoon thunderstorm in Taiwan through high-resolution meteorological simulations. For this purpose, the Noah land surface model (LSM) is implemented into the vector vorticity equation cloud-resolving model (V...

Full description

Saved in:
Bibliographic Details
Published in:Asia-Pacific journal of atmospheric sciences 2019, 55(4), , pp.701-717
Main Authors: Wu, Chien-Ming, Lin, Hsiao-Chun, Cheng, Fang-Yi, Chien, Mu-Hua
Format: Article
Language:English
Subjects:
Atmosphere
Atmospheric Sciences
Climatology
Earth and Environmental Science
Earth Sciences
Experiments
Geophysics/Geodesy
Land surface models
Original Article
Rain
Rainfall
Rainfall intensity
Surface fluxes
Thunderstorms
Topography
Topography (geology)
Vorticity
대기과학
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, we aim to evaluate the impact of fast land-atmosphere interactions on the afternoon thunderstorm in Taiwan through high-resolution meteorological simulations. For this purpose, the Noah land surface model (LSM) is implemented into the vector vorticity equation cloud-resolving model (VVM) with corresponding realistic land surface data of Taiwan into the coupling system, called TaiwanVVM. Two idealized experiments are conducted by giving the same surface forcing but one with direct land-atmosphere coupling from Noah LSM (called Coupled experiment) and the other with prescribed surface fluxes (called Prescribed experiment). Our results show that the fast land-atmosphere interaction over complex topography has a significant influence on rainfall intensity, especially in the heavy precipitating region where the interaction is strong. Without direct coupling between the land surface and the atmosphere in the Prescribed experiment, the diurnal intensity is suppressed by 50% over whole Taiwan and 70% for East Taiwan. Our findings demonstrate that the intensity of the afternoon thunderstorm is sensitive to fast land-atmosphere interactions by modifying local circulation in the mountainous region of Taiwan.
ISSN:1976-7633
1976-7951
DOI:10.1007/s13143-019-00116-x