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DOI | 10.1002/joc.5159 |
Evaluation of the Regional Climate Model over the Loess Plateau of China | |
Wang, Lang1,2; Cheung, Kevin K. W.1; Tam, Chi-Yung2,3; Tai, Amos P. K.2,3; Li, Yubin4 | |
2018 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:1页码:35-54 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Peoples R China |
英文摘要 | This paper presents an evaluation study of the Regional Climate Model version 4.3 (RegCM4.3) over the Loess Plateau in northern China, which is a semi-arid region characterized by complex topography. During recent years, a series of reforestation programmes have been implemented across the region that might influence the local climate in complex ways. To better understand the local climate, the RegCM4.3 was applied to simulate the present-day conditions over the Loess Plateau. The simulation was carried out from 1990 to 2009 at the 50-km horizontal resolution, with lateral boundary conditions taken from the ECMWF-Interim reanalysis. A series of climate variables and processes were evaluated during the winter and summer seasons, such as 2-m air temperature, precipitation, wind circulation, surface energy balance, full moisture budget, and cloud radiative forcing (CRF). The possible origins of the simulation bias and the physical linkages with other model processes were examined. In general, RegCM4.3 is able to reproduce both the spatial and temporal features of the regional climate over the Loess Plateau. However, there are still biases in some meteorological variables including precipitation and 2-m air temperature. In particular, the model tends to produce cold biases during winter and underestimate precipitation during summer. Further analyses indicates that the cold biases in winter may have resulted from the deficiency of the downward longwave radiation fluxes, excessive ground heat fluxes, and negative temperature advection by the seasonal mean circulation. These processes are primarily triggered by deficiencies in CRF and excessive northwesterlies over the plateau. The underestimated precipitation during summer is associated with a weak southerly monsoon in the model. A full moisture budget analysis reveals that the dry bias in this region can be mainly attributed to model deficiency in moisture advection and convergence, and to a lesser extent to that in surface evaporation. |
英文关键词 | regional climate model Loess Plateau model evaluation model bias water and energy heat fluxes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419093600004 |
WOS关键词 | ATMOSPHERE COUPLED MODEL ; SUMMER PRECIPITATION CHANGES ; EAST-ASIA DOMAIN ; PART I ; INTERANNUAL VARIABILITY ; SOUTH-AMERICA ; SIMULATION ; MONSOON ; REGCM3 ; RCM |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/36861 |
专题 | 气候变化 |
作者单位 | 1.Macquarie Univ, Dept Environm Sci, Sydney, NSW, Australia; 2.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Hong Kong, Hong Kong, Peoples R China; 3.Chinese Univ Hong Kong, Earth Syst Sci Programme, Fac Sci, Hong Kong, Hong Kong, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Sch Geog & Remote Sensing, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Lang,Cheung, Kevin K. W.,Tam, Chi-Yung,et al. Evaluation of the Regional Climate Model over the Loess Plateau of China[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(1):35-54. |
APA | Wang, Lang,Cheung, Kevin K. W.,Tam, Chi-Yung,Tai, Amos P. K.,&Li, Yubin.(2018).Evaluation of the Regional Climate Model over the Loess Plateau of China.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(1),35-54. |
MLA | Wang, Lang,et al."Evaluation of the Regional Climate Model over the Loess Plateau of China".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.1(2018):35-54. |
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