BDS锚碇浮标监测海洋大气水汽初步探究  

Preliminary study of atmospheric water vapor monitoring using BeiDou moored buoy over ocean

作　　者：周凌昊 王海深[2] 施闯 曹云昌[2] 梁宏[2] 宁春林 成振华 ZHOU Linghao;WANG Haishen;SHI Chuang;CAO Yunchang;LIANG Hong;NING Chunlin;CHENG Zhenhua(School of Electronic and Information Engineering,Beihang University,Beijing 100191,China;Meteorological Observation Center,China Meteorological Administration,Beijing 100081,China;First Institute of Oceanography,Ministry of Natural Resources,Qingdao,Shandong 266061,China;Meteorological Technology Equipment Center,Guangxi Weather Bureau,Nanning 530022,China)

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191 [2]中国气象局气象探测中心,北京100081 [3]自然资源部第一海洋研究所,山东青岛266061 [4]广西壮族自治区气象局气象技术装备中心,南宁530022

出　　处：《导航定位学报》2024年第4期220-227,共8页Journal of Navigation and Positioning

基　　金：国家重点研发计划项目(2023YFB3907302,2022YFC3104301);国家自然科学基金项目(41931075,42274041,41961144015);中国气象局气象探测中心观测试验项目(GCSYJH23-04)。

摘　　要：精细化、动态化监测海洋大气水汽含量对全球海洋气候相关研究具有重要意义。为探究基于北斗卫星导航系统(BDS)的锚碇浮标平台在海洋水汽探测应用中的潜力,本研究利用白龙浮标搭载的测量型接收机,分别在岸基静态模式和海面动态模式下,对获取的BDS和全球定位系统(GPS)观测数据进行精密单点定位处理,并进行大气可降水量(PWV)反演,同时以欧洲中期天气预报中心第五代全球气候再分析数据集(ERA5)获取的PWV为参考值进行精度评估。结果表明:岸基静态模式下利用BDS观测值反演的PWV精度为0.7 mm,GPS反演的PWV精度为0.6 mm。海面动态模式下利用BDS观测值反演的PWV精度为1.2 mm,GPS反演的PWV精度为2.0 mm,与岸基静态模式探测的水汽产品精度基本相符。初步证明了利用BDS锚碇浮标在海洋动态观测条件下进行水汽含量监测的可行性,但仍需更长期更充分的观测以进一步验证。Accurately and dynamically monitoring the water vapor over the ocean is of vital importance for global climate research.To explore the potential of BeiDou-based moored buoy platform in detection of atmospheric water vapor above the ocean,the experiment was carried out with the BeiDou navigation satellite system(BDS)and global positioning system(GPS)observations from the receiver on the Bailong buoy.The precise point positioning(PPP)technique was applied to process global navigation satellite system(GNSS)observation and retrieve the precipitable water vapor(PWV)under shore-based static and seasurface dynamic modes,respectively.The PWV retrieved from BDS observation was evaluated by the international authoritative global reanalysis data ERA5.It was showed that under shore-based static mode,the root-mean-square(RMS)results of the PWV differences were 0.7 mm and 0.6 mm for BDS and GPS,respectively.While for the sea-surface dynamic mode,the RMS results were 1.2 and 2.0 mm for BDS and GPS,respectively.It indicated that the PWV under the dynamic mode shared similar accuracy with that under the static mode.This partly proved the feasibility of using BDS moored buoy for monitoring atmospheric water vapor under the sea-surface dynamic mode.However,further study should be carried out with longer experiment and more sufficient observation.

关 键 词：北斗卫星导航系统(BDS) 大气水汽 海洋 锚碇浮标 

分 类 号：P228[天文地球—大地测量学与测量工程]