土地利用类型变化对兰州市大气边界层特征影响的数值模拟

In this paper, According to the data of three different periods of land use, numerically simulated the characteristics of USGS, MODIS and satellite data about land surface of Lanzhou under the force of atmospheric background in June respectively, and contrasted the impact of type change about the land use of the boundary layer in lanzhou. The results showed: under the high resolution (1 km), the integral simulation of the WRF modelb was more stability, the data could simulate characteristics of Lanzhou urban atmospheric boundary layer better before and after the change; The land use types change had no effect on the mesoscale circulation situation; valley temperature significantly was higher than the mountains of temperature on the temperature field, performaned for the heat island effect, the lower the height, the greater the strength;the low area of the mixing layer distributed along the urban and had a tendency to shrink,the use types had a great influence on the surface process, The surface process was one of the important factors that affect the weather changes and pollutant transportation;put forward the influence of the WRF model under different land use types to the boundary layer characteristics in lanzhou city.