WRF模式夏季气温和降水模拟对陆面方案敏感性的评估  

Sensitivity of Simulated Summer Temperature and Precipitation to Land Surface Schemes by WRF

作　　者：王明[1] 曾新民[1] 王宁[1] 易翔[1] 周骁[1] 汪彪[2] 

机构地区：[1]解放军理工大学气象海洋学院,江苏南京211101 [2]海军南海舰队海洋水文气象中心,广东湛江524001

出　　处：《气象与减灾研究》2016年第1期32-40,共9页Meteorology and Disaster Reduction Research

基　　金：国家自然科学基金项目(编号:41275012;41205073)

摘　　要：利用NCEP 1°×1°再分析资料,采用WRF V3模式和不同的陆面参数化方案(SLAB、NOAH、RUC、PLEX)对中国2003年夏季气温和降水进行数值模拟试验,评估其对陆面方案的敏感性,并着重分析在干旱、半干旱的西北地区以及湿润的华东地区不同陆面方案对气温和降水模拟的影响。结果表明:1)模式整体上能较好地模拟出总区域的气温场和降水场,但不同陆面方案间模拟结果存在一些差异,其中NOAH(SLAB)方案模拟结果最好(最差)。2)对子区域而言,模拟气温和降水对陆面方案均较为敏感。受气候特征的影响,华东地区气温和降水模拟对陆面方案的敏感性存在较大的差异,其中降水模拟的敏感性很高。此外,模拟的气温和降水空间分布形势在西北地区均较好,但其对陆面方案的敏感性在华东地区较高。3)模拟降水对陆面方案的敏感性要高于气温模拟。Based on the NCEP 1° ×1° reanalyzed data,Weather Research and Forecast model（WRF V3） with different land surface schemes（LSS;SLAB,NOAH,RUC,PLEX） is used to simulate the summer temperature and precipitation in 2003,and to assess its sensitivity to the different land surface schemes,especially,the effects of different land surface schemes on simulated air temperature and precipitation in Northwest China of arid and semi-arid climate（the North） and East China of humid climate（the South） are evaluated. The conclusions are summarized as follows： 1） the model can better simulate the distributions of air temperature and precipitation,but there are some differences among different land surface schemes,in which the NOAH（SLAB）simulation results are the best（worst）. 2） For the subareas,the simulated temperature and precipitation are also sensitive to LSS.Due to the influence of different climatic characteristics,the sensitivity of temperature and precipitation to LSS is quite different in East China,in which the precipitation sensitivity is very high. In addition,the spatial distribution of simulated temperature and precipitation are better in Northwest China,and the sensitivity to LSSs is strong in East China. 3） The sensitivity of precipitation simulation to different land surface scheme is higher than that of air temperature simulation.

关 键 词：WRF模式 气温 降水 陆面方案 敏感性 

分 类 号：P435[天文地球—大气科学及气象学]