【摘要】 利用GAMIT软件对2004年7月至2005年7月北京GPS观测数据进行解算,结合地面温度及气压观测数据,反演了1 a时间内分辨率为2 h的水汽总量序列,并与探空和微波辐射计的反演结果做了对比,均方根差分别为3.05 mm和3.29 mm,得到了北京地区水汽总量的季节变化特点及水汽与降水的相互关系,这对气象研究和天气预报有很好的作用。更多还原

【Abstract】 Using the GPS analysis software GAMIT and combined with the surface temperatures and pressures,the precipitable water vapor(WP) at a timal resolution of two hours has been retrieved from the GPS observations in Beijing from July 2004 to July 2005.Compared with the records of the radiometer and the water vapor radiometer,the results show a good agreement with the rms 3.05 mm and 3.29 mm respectively.Further,the seasonal variation of WP and the relationship between WP and rainfall in Beijing are also discussed in this paper,which are beneficial to the weather study and weather forecast.更多还原