云量、可降水量、降水、水汽的变化是北半球大于南半球。
Cloud fraction, precipitable water, precipitation, and water vapor changes larger in north hemisphere than south one.
结果表明，高原地区和平原地区的可降水量有明显的地区性及季节性变化。
The results that there are obvious regional and seasonal variations of PWV in plateau and plain areas.
然后进行天顶湿延迟至可降水量的转换，结合现场的气象资料进行对比分析。
After that wet zenith delay is calculated into PWV, and field meteorologic data are combined to analyzing.
计算结果表明，可降水量和相应的地面水汽压之间，存在着良好的数值对应关系。
The calculating results show that the precipitable water is well related with the ground water vapor pressure.
因此，MODIS大气可降水量资料经过修正后，可以为卫星反演模式提供同化性较好的输入资料。
So we can conclude that after revised the MODIS atmospheric precipitable water data can be used to satellite derived model and can improve the retrieval accuracy of some satellite remoting model.
本文通过对GPS湿延迟和水汽辐射计、GPS可降水量与无线电探空资料的比较，进行了GPS气象可靠性检核研究。
The reliable verification of GPS-meteorology has been studied with the comparisons of GPS Zenith wet delay and water vapor radiometer, GPS precipitable water vapor and radiosonde.
另外，GPS测量可降水量本身可能存在系统误差，在将GPS资料同化入数值预报模式时应关注GPS资料本身的可靠性。
In addition, GPS observation itself maybe have system error, so it is needed to take into account GPS self-reliability when assimilating the GPS data into the numerical prediction model.
杨景梅，邱金桓.2002。用地面湿度参量计算我国整层大气可降水量及有效水汽含量方法的研究[J]。大气科学，26（1）：9-22。
Yang Jingmei, Qiu Jinheng. 2002. A method for estimating precipitable water and effective water vapor content from ground humidity parameters[J]. Chinese J Atmos Sci, 26(1):9-22.
从而使地形雨这一分量，可自大气环流、天气系统的降水量中分离出来。
Thus the variable of orographic rain is separated from the provision about atmospheric weather system.
固然没有哪个岛屿这一周的可丈量降水量超过一英寸。
Yet none of these islands had more than an inch of measurable precipitation for the entire week.
固然没有哪个岛屿这一周的可丈量降水量超过一英寸。
Yet none of these islands had more than an inch of measurable precipitation for the entire week.
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