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Simulations of a Persistent Heat Wave Event in Missouri in Summer 2012 Using a High-Resolution WRF model

Journal of Meteorological Research 2022年第4期36卷 631-642页

作者： Lili ZHU Fengpeng SUN Tim LI Key Laboratory of Meteorological Disaster Ministry of Education(KLME)/Joint International Research Laboratory of Climate and Environmental Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC–FEMD)Nanjing University of Information Science&TechnologyNanjing 210044China Department of Earth and Environmental Sciences University of Missouri–Kansas CityKansas CityMissouri 64110USA International Pacific Research Center and Department of Atmospheric Sciences School of Ocean and Earth Science and TechnologyUniversity of Hawaii at ManoaHonoluluHawaii 96822USA

An extreme and persistent heat wave event hit Missouri in summer *** operational forecast models failed to predict such an event at a long *** objective of the current study is to simulate this extreme event using a high-resolution Weather Research and Forecasting(WRF)model with eight combined physical(including longwave/shortwave radiation,microphysics,and planetary boundary layer)parameterization *** for one month,the model successfully simulates the spatial pattern and temporal evolution of surface air temperature,compared to in-situ *** interesting feature is an oscillatory development of the surface air temperature,with a pronounced synoptic *** a temperature evolution is consistent with the local zonal wind fluctuation,implying the important role of anomalous temperature *** overall skill score that combines the performance of 2-m air temperature,relative humidity,and precipitation fields is *** result shows that the combination of Thompson,Rapid Radiative Transfer model for GCMs(RRTMG),and Mellor–Yamada–Nakanishi–Niino level-3(MYNN3)schemes presents the best WRF simulation.A further analysis of this best simulation shows that the model successfully reproduces the urban heat island(UHI)effect in the Kansas City Metropolitan Area with realistic diurnal variation of 2-m air temperature in the urban and nonurban areas with a larger UHI effect at nighttime.

关键词： 2012 US summer heat wave Missouri model evaluation/performance parameterization

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