姚朝龙, 罗志才, 刘立龙, 周波阳. 顾及地形起伏的中国低纬度地区湿延迟与可降水量转换关系研究[J]. 武汉大学学报 ( 信息科学版), 2015, 40(7): 907-912. DOI: 10.13203/j.whugis20130409
引用本文: 姚朝龙, 罗志才, 刘立龙, 周波阳. 顾及地形起伏的中国低纬度地区湿延迟与可降水量转换关系研究[J]. 武汉大学学报 ( 信息科学版), 2015, 40(7): 907-912. DOI: 10.13203/j.whugis20130409
YAO Chaolong, LUO Zhicai, LIU Lilong, ZHOU Boyang. On the Relation Between the Wet Delay and the Water Precipitable Vapor in Consideration of Topographic Relief in the Low-latitude Region of China[J]. Geomatics and Information Science of Wuhan University, 2015, 40(7): 907-912. DOI: 10.13203/j.whugis20130409
Citation: YAO Chaolong, LUO Zhicai, LIU Lilong, ZHOU Boyang. On the Relation Between the Wet Delay and the Water Precipitable Vapor in Consideration of Topographic Relief in the Low-latitude Region of China[J]. Geomatics and Information Science of Wuhan University, 2015, 40(7): 907-912. DOI: 10.13203/j.whugis20130409

顾及地形起伏的中国低纬度地区湿延迟与可降水量转换关系研究

On the Relation Between the Wet Delay and the Water Precipitable Vapor in Consideration of Topographic Relief in the Low-latitude Region of China

  • 摘要: 在地基GPS气象学中,湿延迟(zenithwetdelay,ZWD)与可降水量(precipitablewatervapor,PWV)的转换系数犓是一个重要的参数?疚睦弥泄臀扯鹊厍ǎ玻埃埃场悖巍玻福病悖危玻案鎏娇照荆玻埃埃浮玻埃保蹦甑奶娇帐荩治隽藸酥邓娌庹疚扯群秃0蔚谋浠卣鳎⒔⒘艘恢治扌枵镜闫笫?仅与站点纬度、年积日和海拔相关的区域转换系数犓值腜汀=峁砻鳎髡酒骄鶢酥捣直鹚嫖扯取⒑0蔚脑龃蠖跣?减小速率分别为0.0002/(°)和0.002/km;本文建立的区域模型的精度与单站模型或者通过加权平均温度(犜犿)获得的转换系数犓值的精度相当,可用于该区域无气象数据条件下GPS反演PWV

     

    Abstract: Theconversioncoefgficient betweenthezenithwetdelayandtheprecipitablewatervaporisanimportantparameteringround basedGPSmeteorology.Thedataof20radiosondestationsfrom2008to2011inalow latituderegionofChina(20.03°N~28.2°N)wereusedtoanalyzethechangeof withrespecttolatitudeandheight.Aregionalconversioncoefficient modelwithoutanymeteoro logicalparameterswasconstructedbyconsideringsitelatitude,dayoftheyear,andsiteheight.Theresultsshowthatthemeanvaluesof ateachsitetendtoreducewithincreasinglatitudeandheightattheratesof0.0002perdegreeand0.002perkilometer,respectively.Theregionalconversioncoef ficient modelhasalmostsameaccuracyasthatofthesite specificmodelorasestimatedbytheweightedmeantemperature,andcanbeusedtoobtainGPSPWVintheappliedregionwithoutanymeteorologicalparameters.

     

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