夏季巴丹吉林沙漠辐射特征的模拟研究  

SIMULATION OF SUMMER RADIATION FEATURE OVER BADAIN JARAN DESERT

作　　者：赵林[1,2] 吕世华[1] 陈玉春[1] 奥银焕[1] 马迪[1,2] 鲍艳[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所寒旱区陆面过程和气候变化重点实验室,兰州730000 [2]中国科学院大学,北京100049

出　　处：《太阳能学报》2014年第2期338-344,共7页Acta Energiae Solaris Sinica

基　　金：全球变化研究重大科学研究计划(2010CB950503);国家自然科学基金(41005011);国家自然科学基金(41205005);国家重点基础研究发展(973)计划(2013CB956004)

摘　　要：利用WRF（TheAdvancedResearchWeatherResearchandForecasting）模式3．3版本，检验其对巴丹吉林沙漠地区辐射特征的模拟能力，并通过模拟结果选取适于沙漠下垫面辐射特征模拟的最优参数化方案组合。通过连续9d（2009年8月11～19日）不同天气条件下的数值模拟，分别选取4种向下短波、4种向下长波辐射辐射方案及4种陆面过程方案，认为WRF模式能较好地模拟出该地区不同天气条件下（晴天、多云和阴雨）辐射日变化的特征，其中RRTMG向下短波和向下长波辐射方案较其他辐射方案略有优势，其模拟的向下短波辐射通量和向下长波辐射通量的总均方根误差最小，分别为103．9和25．9W／m^2；陆面过程方案中，RUC方案较有优势，模拟的向上长波和向上短波辐射通量的总均方根误差最小，分别为26．9和25．2W／m^2；阴雨天气条件下，辐射方案的调用间隔时间对辐射通量的模拟较敏感，调用间隔时间的缩短能明显改进辐射通量由晴转阴过程的模拟。Using the Advanced Research Weather Research and Forecasting （WRF） model, its performance of modeling radiation feature and finding a reasonable combination of model schemes for the simulation of radiation over Badain Jaran Desert was evaluated. These simulations were performed in 9-days （11th-19th of August, 2009） under different weather condition, conducted with 4 different downward shortwave radiation schemes, 4 different downward longwave radiation schemes and 4 land surface models, respectively. The results show that WRF is able to simulate the feature of daily radiation variance over Badain Jaran Desert; RRTMG downward shortwave radiation scheme and downward longwave radiation scheme are better than the others. RMSE are 103.9 and 25.9W/m^2, respectively. RUC land surface model is superior to the others, RMSE of the simulated upward shortwave radiation flux and upward longwave radiation flux are 26.9 and 25.2W/m^2 , respectively. The calling frequency of radiation schemes is sensitive to modeling of simulating radiation flux in cloudy and rainy weather, increasing the frequency will improve the results of simulating radiation flux transitions from sunny to cloudy.

关 键 词：巴丹吉林沙漠 WRF模式 数值模拟 辐射方案 陆面过程方案 

分 类 号：P422[天文地球—大气科学及气象学]