Numerical simulation of near surface meteorological elements using WRF model over semi-arid Northeastern China

The default fractional vegetation cover and terrain height were replaced by The Normalized Difference Vegetation Index (NDVI) of MODIS and Digital Elevation Model of SRTM system, and the near surface meteorology elements were assimilated by 3Dvar module in the WRF model. The simulations were compared with observations of Tongyu station in June to August, 2009. The results showed that the WRF model has good quality in simulating the diurnal characteristics of surface layer temperature, wind direction over semi-arid Northeastern China in summer. Figure 1 Fractional vegetation coverage (%) maps for the domain 2 from the default data (a)-(c), and MODIS data (d)-(f), and the (a), (d) for June, (b), (e) for July, (c), (f) for August 2009

Figure 2 Comparison of observations and simulations of near surface temperature and relative humidity in the three months