沙漠与绿洲气象Issue(5)：16-22,7.DOI:10.3969/j.issn.1002-0799.2014.05.003
DOGRAFS边界层方案对新疆气象要素预报影响初探
The Effect of Different Boundary Layer Schemes on the Forecasting Surface Meteorological Factors
摘要
Abstract
Based on the forecasts of Desert Oasis Gobi Regional Analysis and Forecast System (DOGRAFSv1.0) by two PBL schemes (namely YSU and ACM2) and observation data during January and July in 2013, using the objective verification method, the effect of different boundary layer schemes on the forecasting surface meteorological factors is analyzed preliminarily. The results indicate that the performance of the ACM2 scheme takes more advantages than the YSU scheme on the whole, especially in January. For 2 m temperature, the ACM2 scheme has reduced the bias of forecasting low temperature while magnifying the bias of forecasting high temperature. With regard to 10 m wind speed, the forecasting bias of the ACM2 scheme is considerably below the YSU scheme. And for the forecasting precipitation, the ACM2 scheme has reduced the missing rate to some extent in January. That might be given rise to the local term under the stable or neural conditions, which contributes to weakening the entrainment of the top of PBL and eddy diffusion of the inner PBL so that the coupled PBL physics and convective process is restrained to a certain degree.关键词
DOGRAFS系统/边界层方案/地面气象要素/客观检验Key words
DOGRAFS system/boundary layer scheme/surface meteorological factors/objective verification分类
天文与地球科学引用本文复制引用
于晓晶,李淑娟,辛渝,琚陈相,李曼,马玉芬..DOGRAFS边界层方案对新疆气象要素预报影响初探[J].沙漠与绿洲气象,2014,(5):16-22,7.基金项目
中央级公益科研院所基本科研业务专项（IDM201302）、中国沙漠气象科学研究基金（SQJ2013014）和中国气象局气象关键技术集成与应用重点项目（CAMGJ2012Z20）共同资助。 （）
