城市化发展对气象要素的影响

为了探讨城市化对城市区域气象环境的影响程度，以辽宁中部城市群为试验区域，选取一个冬季的重污染过程，利用中尺度数值模式MM5进行了数值模拟研究。研究发现，MM5能够比较细致地反映出城市化对区域气象环境的影响。结果表明：城市化发展对于地表状况的影响使得近地面风速、比湿减小，温度升高，同时会导致逆温现象加剧，恶化局地气象条件。

Impact of Urbanization on Meteorological Conditions of City Group Area

To investigate the impact of the urbanization on the city meteorological conditions, the city group of the middle Liaoning was regarded as test area, a case of heavy pollution in winter was chosen and analyzed by means of the mesoscale numerical model (MM5). The results show that MM5 has a good performance to study the impact of the urbanization on the regional meteorological conditions. Furthermore, the impact of the urbanization development on the surface physical parameter makes the wind speed and specific humidity of surface layer decrease while makes the air temperature rise, meanwhile it makes the inversion intensify and deteriorate the local meteorology condition.