摘要
The feasibility of GPS precipitable water vapor （PWV） is discussed based on the comparison of Radiosonde and GPS PWV where the correlation coefficient is 0.94 and the RMS is 4.0 mm. PWV change in the Chinese mainland in 2004 is graphed with the gridding method of splines in tension, according to the GPS data of the crust monitor observation network in China, combined with relevant meteorology information. According to the distribution of the annual amount of rainfall in the country, it can be concluded that the total trend of the PWV is diminishing from the south-east coastland to the north-west inland. The PWV reaches its maximum during July and August, and the minimum is reached during January and February. According to the PWV, from high to low, all districts can be ranked as south-east coastland, the inland and the tableland.
GPS 可降水蒸汽(PWV ) 的可行性基于相关系数是 0.94 的雷送和 GPS PWV 的比较被讨论， RMS 是 4.0 公里。在在 2004 的中国大陆的 PWV 变化是有在紧张的花键的 gridding 方法的 graphed，根据在中国的外壳监视器观测站网的 GPS 数据，与相关气象学信息结合了。根据在这个国家的降雨的年度数量的分发， PWV 的全部的趋势从东南沿海岸地区正在减少到西北内陆，这能被结束。PWV 到达它的最大值在期间 7 月和 8 月，和最小在 1 月和 2 月期间被到达。根据 PWV，从对 low 高，所有区域能作为东南沿海岸地区，内陆和台地被评价。
