Plateau Meteorology

Plateau Meteorology >

2017 , Vol. 36 >Issue 2: 283 - 293

DOI: https://doi.org/10.7522/j.issn.1000-0534.2016.00086

Impacts of Microphysics and PBL Physics Parameterization on a Convective Precipitation over the Qinghai-Tibetan Plateau

  • LUAN Lan ,
  • MENG Xianhong ,
  • Lü Shihua ,
  • LI Zhaoguo
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  • Key Laboratory for Land Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;College of Amospheric Sciences, Chendu University of Informtion Technology Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu 610225, China;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China;University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2016-04-19

  Online published: 2017-04-28

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Abstract

A convective precipitation occurred in Nagqu over the Qinghai-Tibetan Plateau was simulated using WRF model with different microphysics and PBL physics options in this work. The simulations and observations were compared to understand the influence of the different microphysics and PBL physics options. The results show that WRF model can reproduce the precipitation, but a deviation of precipitation center exists between the simulation and the observation, which leads to discrepancies between them. Comparing the simulations with TRMM, a remote sensing product, the time when convention occurred is close. In addition, differences were produced by using different initial and boundary inputs. Overall, the simulations using ERA-Interim datasets as inputs produced better precipitation pattern than that using the NCEP FNL datasets, comparing with the TRMM datasets. By analyzing the differences of water vapor flux, water vapor flux divergence and vertical wind between the simulations with different microphysics and PBL physics options, it is found that the simulation of precipitation is more sensitive to the PBL physics than the microphysics options.

Key words： Qinghai-Tibetan Plat; WRF model; Parameterization sch; Simulation of precip

Cite this article

LUAN Lan , MENG Xianhong , Lü Shihua , LI Zhaoguo . Impacts of Microphysics and PBL Physics Parameterization on a Convective Precipitation over the Qinghai-Tibetan Plateau[J]. Plateau Meteorology, 2017 , 36(2) : 283 -293 . DOI: 10.7522/j.issn.1000-0534.2016.00086

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