Abstract
The spatial resolution of general circulation models (GCMs) is too coarse to represent regional climate variations at the regional, basin, and local scales required for many environmental modeling and impact assessments. Weather research and forecasting model (WRF) is a next-generation, fully compressible, Euler non-hydrostatic mesoscale forecast model with a run-time hydrostatic option. This model is useful for downscaling weather and climate at the scales from one kilometer to thousands of kilometers, and is useful for deriving meteorological parameters required for hydrological simulation too. The objective of this paper is to validate WRF simulating 5 km/1 h air temperatures by daily observed data of China Meteorological Administration (CMA) stations, and by hourly in-situ data of the Watershed Allied Telemetry Experimental Research Project. The daily validation shows that the WRF simulation has good agreement with the observed data; the R 2 between the WRF simulation and each station is more than 0.93; the absolute of meanbias error (MBE) for each station is less than 2°C; and the MBEs of Ejina, Mazongshan and Alxa stations are near zero, with R 2 is more than 0.98, which can be taken as an unbiased estimation. The hourly validation shows that the WRF simulation can capture the basic trend of observed data, the MBE of each site is approximately 2°C, the R 2 of each site is more than 0.80, with the highest at 0.95, and the computed and observed surface air temperature series show a significantly similar trend.
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Xiaoduo Pan was born in 1978. She received the B. S. and M. S. in physical geography from the Lanzhou University, China, in 2000 and 2003, respectively, and received M. A. in international environment from the Tokyo University of Agriculture and Technology University, Japan. Now, she is a Ph.D. candidate of the Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. Her current research interests focus on atmospheric forcing data for land surface model and downscale method.
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Pan, X., Li, X., Shi, X. et al. Dynamic downscaling of near-surface air temperature at the basin scale using WRF-a case study in the Heihe River Basin, China. Front. Earth Sci. 6, 314–323 (2012). https://doi.org/10.1007/s11707-012-0306-2
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DOI: https://doi.org/10.1007/s11707-012-0306-2