剔除“系统误差”对月尺度区域气候动力预测影响的研究
STUDY OF THE EFFECT OF ELIMINATING THE SYSTEMATIC ERRORS ON MONTHLY-SCALE REGIONAL CLIMATE DYNAMICAL PREDICTION SOUTHERN
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摘要: 通过大气环流模式提供侧边界条件,单向嵌套并入了水文模型VXM的区域气候模式RegCM3对我国华东地区进行月尺度气候预测。根据嵌套模式1991~2000年10年各月的积分结果与美国气候预测中心的降水综合分析资料(CMAP)、美国国家气象中心(NMC)的温度资料建立了一组针对各月的"系统误差",对2001~2005年5年各月的回报结果进行订正,通过对原始回报结果和订正结果进行评估发现,经剔除"系统误差"后的预测结果较原始预测结果改进较为明显,表明该方法可有效提高月尺度区域气候动力预测的准确率。Abstract: A general circulation model is embedded with a fine-resolution regional climate model,RegCM3,into which the hydrological model VXM is incorporated.Then the nested models system is used for predicting the monthly-scale regional climate over East China.In the system,the systematic bias/errors are formulate based on the results of the nested models from 1991 to 2000 with CMAP reanalysis precipitation data and the NMC reanalysis temperature data.Then,they are used for correcting the hindcast results during 2001~2005.After evaluating the original and the corrected results of the temperature and precipitation,it is found that the corrected results are better than the original results obviously.All these show that the method can be applied for enhancing the accuracy in monthly-scale regional climate prediction.
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[1] GIORGI F,MEARNS L O.Introduction to special section:Regional climate modeling revisited[J].J Geophys Res,1999,104(8):6 335-6 352. [2] 王在志,吴国雄,刘平,等.全球海-陆-气耦合模式大气模式分量的发展及其气候模拟性能Ⅰ-水平分辨率的影响[J].热带气象学报,2005,21(3):225-237. [3] 王在志,宇如聪,王鹏飞,等.全球海-陆-气耦合模式大气模式分量的发展及其气候模拟性能Ⅱ--垂直分辨率的提高及其影响[J].热带气象学报,2005,21(3):238-247. [4] 赵宗慈,罗勇.二十世纪九十年代区域气候模拟研究进展[J].气象学报,1998,56(2):225-246. [5] 万齐林,梁建茵,施永年.月尺度区域气候数值预测试验[J].热带气象学报,1996,12(4):349-355. [6] 李崇银.动力气候学引论[M].北京:气象出版社,1995,183-188. [7] 陈桂英,赵振国.短期气候预测评估方法和业务初估[J].应用气象学报,1998,9(2):178-185. [8] 李维京,纪立人.月动力延伸预报研究[M].北京:气象出版社,2000:1-9. [9] 付顺旗,张立凤,张铭.谱模式T63L9正规模初值化方案及试验[J].大气科学,2001,25(5):661-675. [10] ZENG Xinmin,ZHAO Ming,SU Bingkai,et al.Effects of subgrid heterogeneities in soil infiltration capacity and precipitation on regional climate:A sensitivity study[J].Theoretical and Applied Climatology,2002,73(2):207-221. [11] ZENG Xinmin,ZHAO Ming,SU Bingkai,et al.Simulations of a hydrological model as coupled to a regional climate model[J].Advances inAtmospheric Sciences,2003,20(2):227-236. [12] 汤懋苍,李栋梁,张拥军.短期气候预测的出路在何方[J].高原气象,2004,23(5):714-717. [13] 王绍武,朱锦红.短期气候预测的评估问题[J].应用气象学报,2000,11(S1):2-11. [14] 任宏利,丑纪范.统计-动力相结合的相似误差订正法[J].气象学报,2005,63(6):988-993.
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