WRF模式对西南地区干旱事件的模拟研究  

WRF model's simulation study on the drought in Southwest China

作　　者：王红丽 廖留峰 

机构地区：[1]贵州省气象服务中心,贵州贵阳550002 [2]贵州省山地环境气候研究所,贵州贵阳550002

出　　处：《贵州气象》2015年第6期1-5,共5页Journal of Guizhou Meteorology

基　　金：国家科技计划课题(西南突发性灾害应急与防控技术集成与示范)2012BAD20B06

摘　　要：2009—2010年在中国西南地区发生了严重的秋冬春三季持续性干旱,为了评估WRF模式两种陆面方案在中国西南地区干旱事件中的模拟性能,该文采用Noah陆面方案和Pleim_Xiu陆面方案两种WRF模拟方案对西南干旱事件进行模拟研究。两种陆面方案都合理的模拟出了西南地区极端干旱事件中的降水空间分布与时间序列,但与观测资料相比仍然存在一定的误差。两种陆面方案的相互比较表明,在极端干旱事件模拟中,Noah陆面方案在降水模拟中有着一定的改进作用。在对西南干旱时期的蒸发模拟当中,Noah和Px方案相比有着更低的误差,采用Noah陆面方案能更好的模拟蒸发状况。During the 2009--2010 ,the Southwest China suffered a persistent drought event. To evaluate the per- formance of two land surface schemes in the severe drought drought, two experiments were examined to investigate the event using the Noah land surface scheme and Pleim_Xiu land surface scheme. The WRF simulations with two land surface schemes can reasonably simulate the spatial pattern and temporal variation of precipitation in Southwest China, although the simulations still show several errors relative to observations. The comparison of the WRF simulations with two different land surface schemes indicated that the Noah land surface scheme showed a slightly better performance in the precipitation during the severe drought simulations. Noah land surface scheme can better reproduce the evaporation than Pleim_Xiu land surface scheme due to the lower errors.

关 键 词：WRF模式 陆面方案 西南干旱 

分 类 号：P435[天文地球—大气科学及气象学]