WRF模式不同微物理方案對青海高原夏季一次降水過程模擬差異的初步探討

doi:10.12306/2022jms.0037

首頁 > 過刊瀏覽>2024年第44卷第4期 >766-774. DOI:10.12306/2022jms.0037

WRF模式不同微物理方案對青海高原夏季一次降水過程模擬差異的初步探討
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                        10.12306/2022jms.0037
                    
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中圖分類號:P435
基金項(xiàng)目:國家自然科學(xué)基金資助項(xiàng)目(42165008);青海省氣象局重點(diǎn)資助項(xiàng)目(QXZD2022-11);青海省科技廳研究項(xiàng)目(2021-ZJ-745)

A preliminary study on the simulation differences of a summer precipitation process by different microphysics schemes of WRF model in Qinghai Plateau

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為了解不同微物理方案對青海高原地區(qū)夏季降水過程模擬的影響,利用WRF模式和NCEP再分析資料,選取Lin方案、WSM6方案和New Thompson 方案等3種微物理過程參數(shù)化方案,模擬了青海高原地區(qū)2017年夏季一次典型降水過程,并結(jié)合探空、降水等觀測資料對模擬結(jié)果進(jìn)行了探討。結(jié)果表明:WRF模式3種微物理參數(shù)化方案對溫度廓線的模擬表現(xiàn)出較好的一致性,且均與實(shí)況接近,但對不同區(qū)域相對濕度廓線的模擬能力有明顯差異;3種微物理參數(shù)化方案均能模擬出本次降水的主要走向、雨帶及強(qiáng)降水中心,但模擬的雨帶和強(qiáng)降水中心位置較實(shí)況偏東且局部雨量偏大;WSM6方案對降水空間分布的模擬與實(shí)況最接近,WSM6 和New Thompson 方案模擬的降水偏差均略小于Lin方案;3種方案降水模擬結(jié)果中,小雨TS評分最高,其次是中雨,對大雨模擬的可信度均較差;降水模擬小雨TS評分最高的是New Thompson 方案,為0.60,WSM6方案次之,Lin方案較差,為0.43;對中量降水模擬,WSM6方案略優(yōu)于其他兩個方案;降水模擬New Thompson和WSM6方案整體優(yōu)于Lin方案。

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In order to understand the influence of different microphysical schemes on summer precipitation process simulation in Qinghai Plateau,by using the WRF model and NCEP reanalysis data, three microphysical process parameterization schemes, including Lin scheme, WSM6 scheme and New Thompson scheme, were selected to simulate a typical precipitation process in the summer of 2017 in Qinghai Plateau, and the simulation results were discussed based on the observation data of radiosonde and precipitation. Results show that: three microphysical parameterization schemes of WRF model show good consistency to the simulation of temperature profiles, and are close to the real situation. However, there are obviously different in the simulation ability of relative humidity profiles in different regions; the three microphysical parameterization schemes can simulate the main trend, rain belt and heavy rainfall center of the precipitation, but the location of simulated rain belt and heavy precipitation center is more east than the real situation and the local rainfall is larger; the simulated precipitation spatial distribution of WSM6 scheme is the closest to the real data, and the simulated precipitation deviation of the WSM6 and New Thompson schemes is slightly smaller than that of the Lin scheme; the TS score of light rain was the highest, followed by moderate rain, and the reliability of heavy rain simulation was poor; the New Thompson scheme has the highest TS score (0.60) in light rain simulation, followed by WSM6 scheme and Lin scheme (0.43); the WSM6 scheme is better than the other two schemes for medium precipitation simulation; New Thompson scheme and WSM6 scheme are superior to Lin scheme on the whole.

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王麗霞,劉娜,王啟花,馬有絢,張博越. WRF模式不同微物理方案對青海高原夏季一次降水過程模擬差異的初步探討.氣象科學(xué),2024,44(4):766-774 WANG Lixia, LIU Na, WANG Qihua, MA Youxuan, ZHANG Boyue. A preliminary study on the simulation differences of a summer precipitation process by different microphysics schemes of WRF model in Qinghai Plateau. Journal of the Meteorological Sciences,2024,44(4):766-774

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收稿日期:2022-03-10
最后修改日期:2022-04-28
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在線發(fā)布日期: 2024-09-23
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