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Comparison of aircraft observations with ensemble forecast model results in terms of the microphysical characteristics of stratiform precipitation

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Atmospheric and Oceanic Science Letters 2020年第5期13卷 452-461页

作者： FU Yuan LEI Hengchi YANG Jiefan GUO Jiaxu ZHU Jiangshan Key Laboratory of Cloud-Precipitation Physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Earth and Planetary Science University of Chinese Academy of SciencesBeijingChina

The prediction of the particle number concentration and liquid/ice water content of cloud is significant for many aspects of atmospheric ***,given the uncertainties in the initial and boundary conditions and imperfections of microphysical schemes,the accurate prediction of these microphysical properties of cloud is still a big *** ensemble approach may be a viable way to reduce forecast *** this paper,a large-scale stratiform cloud precipitation process is studied by comparing results of a 10-member ensemble forecast model with aircraft observation *** means of the ensemble average,the prediction of bulk parameters such as liquid water content and ice water content can be improved in comparison with the control member,but the particle number concentrations are still one to two orders of magnitude less than those from *** of raindrop size spectra reveals a big distinction between observations and predictions for particles with a diameter less than 1000μm.

关键词： Aircraft observation ensemble forecast model particle number concentration liquid/ice water content

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Evaluating the performance of a WRF microphysics ensemble through comparisons with aircraft observations

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Atmospheric and Oceanic Science Letters 2021年第4期14卷 1-6页

作者： Yuan Fu Hengchi Lei Jie-fan Yang Zhibo Gao Key Laboratory of Cloud-Precipitation Physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijingChina

observation data obtained in a mesoscale convective system are compared to Weather Research and Forecasting(WRF)model simulations using four microphysics schemes(Morrison,WSM6,P3,SBM)with different *** main purpose of this paper is to assess the performance of the microphysics ensemble in terms of cloud microphysical *** show that although the vertical distributions of liquid water content(LWC)and ice water content(IWC)simulated by the four members are quite different in the convective cloud region,they are relatively uniform in the stratiform cloud ***,the results of the Morrison scheme are very similar to the ensemble average,and both of them are closer to the observations compared to the other ***,the authors also note that all members still overpredict the LWC by a factor of 2–8 in some regions,resulting in large deviation between the observation and ensemble average.

关键词： Aircraft observation Microphysics ensemble Particle number concentration liquid/ice water content

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