Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.11.030 |
What model resolution is required in climatological downscaling over complex terrain? | |
El-Samra, Renalda1,2; Bou-Zeid, Elie3; El-Fadel, Mutasem1 | |
2018-05-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 203页码:68-82 |
文章类型 | Article |
语种 | 英语 |
国家 | Lebanon; USA |
英文摘要 | This study presents results from the Weather Research and Forecasting (WRF) model applied for climatological downscaling simulations over highly complex terrain along the Eastern Mediterranean. We sequentially downscale general circulation model results, for a mild and wet year (2003) and a hot and dry year (2010), to three local horizontal resolutions of 9, 3 and 1 km. Simulated near-surface hydrometeorological variables are compared at different time scales against data from an observational network over the study area comprising rain gauges, anemometers, and thermometers. The overall performance of WRF at 1 and 3 km horizontal resolution was satisfactory, with significant improvement over the 9 km downscaling simulation. The total yearly precipitation from WRF's 1 km and 3 km domains exhibited < 10% bias with respect to observational data. The errors in minimum and maximum temperatures were reduced by the downscaling, along with a high-quality delineation of temperature variability and extremes for both the 1 and 3 km resolution runs. Wind speeds, on the other hand, are generally overestimated for all model resolutions, in comparison with observational data, particularly on the coast (up to 50%) compared to inland stations (up to 40%). The findings therefore indicate that a 3 km resolution is sufficient for the downscaling, especially that it would allow more years and scenarios to be investigated compared to the higher 1 km resolution at the same computational effort. In addition, the results provide a quantitative measure of the potential errors for various hydrometeorological variables. |
英文关键词 | High resolution dynamical downscaling Mesoscale modeling over complex terrain Regional climate model Weather research and forecasting model |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426226400007 |
WOS关键词 | TEMPERATURE LAPSE RATES ; REGIONAL CLIMATE ; PART I ; VERTICAL FLUXES ; SURFACE WIND ; PRECIPITATION ; SENSITIVITY ; SIMULATION ; TURBULENCE ; RAINFALL |
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/38599 |
专题 | 地球科学 |
作者单位 | 1.Amer Univ Beirut, Dept Civil & Environm Engn, Beirut, Lebanon; 2.Rakik Hariri Univ, Dept Civil & Environm Engn, Meshref, Lebanon; 3.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA |
推荐引用方式 GB/T 7714 | El-Samra, Renalda,Bou-Zeid, Elie,El-Fadel, Mutasem. What model resolution is required in climatological downscaling over complex terrain?[J]. ATMOSPHERIC RESEARCH,2018,203:68-82. |
APA | El-Samra, Renalda,Bou-Zeid, Elie,&El-Fadel, Mutasem.(2018).What model resolution is required in climatological downscaling over complex terrain?.ATMOSPHERIC RESEARCH,203,68-82. |
MLA | El-Samra, Renalda,et al."What model resolution is required in climatological downscaling over complex terrain?".ATMOSPHERIC RESEARCH 203(2018):68-82. |
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