适用于金沙江流域降水模拟的WRF模式参数化方案研究
Study on Applicable Parameterization Schemes of WRF in the Jinshajiang River Basin
DOI: 10.12677/JWRR.2016.54041, PDF, HTML, XML, 下载: 1,628  浏览: 3,092  国家自然科学基金支持
作者: 麦紫君, 曾小凡, 周建中, 张海荣：华中科技大学水电与数字化工程学院，湖北 武汉
关键词: WRF模式；参数化方案；降水模拟；金沙江流域；WRF； Parameterization Scheme； Rainfall Simulation； The Jinshajiang River Basin
摘要: 为确定适宜于金沙江流域降水模拟及预报的WRF模式参数化方案组合，针对流域四场典型降水过程，通过构造WRF模式中不同微物理过程、边界层和积云对流参数化方案组合，对WRF模式在金沙江流域的降水模拟进行了试验研究。基于TS评分和降水空间分布的比较，研究结果表明，优选参数化方案组合的WRF模式适用于金沙江流域降水模拟及预报，且微物理过程和边界层方案的选择对降水模拟影响较大，两者之间的适宜组合能达到较好的模拟效果，而积云对流参数化方案的影响相对较小。当微物理过程、边界层、积云对流参数化方案采用WRF Single-Moment 3-class、YSU、Kain-Fritsch (new Eta)组合或Ferrier (new Eta)、Mellor-Yamada-Janjic (Eta) TKE、Kain-Fritsch (new Eta)组合，WRF模式模拟降水与实测降水的量级及空间分布更为相符。
Abstract: To select applicable parameterization schemes combinations of WRF for rainfall simulation and forecast-ing in the Jinshajiang River basin, different combinations of microphysics, boundary layer and cumulus convection parameterization schemes and different nesting frameworks of WRF are evaluated in this re-search, by simulating four typical daily rainfall events in flood period. Based on TS and the spatial distri-butions, the results show that WRF with selective parameterization schemes is suitable for rainfall simu-lation in the Jinshajiang River basin. The impacts of microphysics and boundary layer schemes are relative bigger than those of cumulus convection scheme, and optimal combinations of microphysics and boundary layer schemes can achieve a better simulation. When microphysics, boundary layer and cumulus convection parameterization schemes apply combinations of WRF Single-Moment 3-class, YSU, Kain- Fritsch (new Eta) or combinations of Ferrier (new Eta), Mellor-Yamada-Janjic (Eta) TKE and Kain- Fritsch (new Eta), the magnitude and the spatial distributions of the simulated rainfall by WRF are more consistent with the observed rainfall.
文章引用：麦紫君, 曾小凡, 周建中, 张海荣. 适用于金沙江流域降水模拟的WRF模式参数化方案研究[J]. 水资源研究, 2016, 5(4): 350-358. http://dx.doi.org/10.12677/JWRR.2016.54041

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