地基GPS水汽监测技术及气象业务化应用系统研究
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中国气象局气象关键技术集成与应用项目(CMAGJ2011M46);中国气象局西南区域气象中心区域重大科研业务项目(20103;20105);成都信息工程学院科研基金(KYTZ201034)〖ZK)〗


Research of remote sensing technology of atmospheric water vapor by using groundbased GPS and application system of meteorological operations
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    摘要:

    〖HT5K〗本研究建立了川渝地区地基GPS(global positioning system,全球定位系统)遥感水汽的本地化计算模型,开发出GPS遥感水汽的计算软件包,开展了局域地基GPS观测网遥感大气水汽的试验及业务应用,反演出30 min间隔的高时间分辨率GPS可降水量序列。评估了反演精度,研究了GPS水汽产品在气象业务应用的可行性。研发了可搭建在MICAPS (meteorological information comprehensive analysis and process system)平台上的地基GPS水汽监测业务化应用系统,实现了局域地基GPS观测网数据的实时传输、数据解算、可降水量反演和GPS水汽产品的可视化,并在气象业务部门试运行,在强降水、暴雪等灾害性天气预报中发挥了独特作用。

    Abstract:

    This study established local computing model of remote sensing water vapor by using groundbased GPS(global positioning system) in the region of SichuanChongqing,and developed computing software packages of GPS remote sensing water vapor.Then the experiment and operational application of remote sensing water vapor by using groundbased GPS in this local network was done,by which the high time resolution GPS precipitable water vapor(PWV) sequence of 30 min intervals was derived.This paper also gives the assessment of the retrieval accuracy,as well as the feasibility of meteorological operations application of GPS water vapor products.The major results of this study include developing the operations application system of remote sensing atmospheric water vapor by using groundbased GPS,which can be build on the MICAPS(meteorological information comprehensive analysis and process system) as an operational application system,and realizing the realtime transmission,data solution,deriving of PWV by a local groundbased GPS network and visualization of GPS water vapor products.This meteorological operations system played a unique role in the heavy rain,blizzard and other severe weather forecast in its trialrun.

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