An enhanced integrated water vapour dataset from more than 10,000 global ground-based GPS stations in 2020

This is a 5-min Integrated Water Vapor (IWV) product from 12,552 ground-based GPS stations worldwide in 2020. It contains 1,093,591,492 IWV estimates in total. The dataset is an enhanced version of the existing operational GPS IWV dataset from Nevada Geodetic Laboratory. The enhancement is reached by using accurate meteorological information from ERA5 for the GPS IWV retrieval with a significantly higher spatiotemporal resolution. The dataset is recommended for high-accuracy applications. DESCRIPTION Geodetic Institute, Karlsruhe Institute of Technology, Germany OUTPUT 5-min enhanced GPS Integrated Water Vapour product CONTACT Peng Yuan, [e-mail]; Geoffrey Blewitt, [e-mail] INPUT NGL: GPS ZTD; ERA5 pressure level product: pressure and Tm NGL: Nevada Geodetic Laboratory, University of Nevada, http://geodesy.unr.edu ERA5: the fifth generation ECMWF reanalysis, https://www.ecmwf.int Authors: Peng Yuan, Geoffrey Blewitt, Corné Kreemer, William C. Hammond, Donald Argus, Xungang Yin, Roeland Van Malderen, Michael Mayer, Weiping Jiang, Joseph Awange, Hansjoerg Kutterer Detailed descriptions and quality evaluations of the dataset have been published in Earth System Science Data (see below). If you would like to use the dataset, please cite the dataset and the associated paper as follows: [1] Yuan, P., Blewitt, G., Kreemer, C., Hammond, W. C., Argus, D., Yin, X., Van Malderen, R., Mayer, M., Jiang, W., Awange, J., and Kutterer, H.: An enhanced integrated water vapour dataset from more than 10 000 global ground-based GPS stations in 2020, Earth System Science Data, 15, 723–743, https://doi.org/10.5194/essd-15-723-2023, 2023. [2] Yuan, Peng, Blewitt, Geoffrey, Kreemer, Corné, Hammond, William C., Argus, Donald, Yin, Xungang, Van Malderen, Roeland, Mayer, Michael, Jiang, Weiping, Awange, Joseph, & Kutterer, Hansjörg. (2022). An enhanced integrated water vapour dataset from more than 10,000 global ground-based GPS stations in 2020 [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6973528 >>File: NGL2020_12552_blgph.txtDescription: coordinates of the 12552 GPS stations worldwideFormat: column #1: Site name column #2: Latitude (degree) column #3: Longitude (degree) column #4: Geopotential altitude (geopotential meter) >>ZIP files: data saved according to the first letter of the station namesDescription: enhanced GPS IWV data product at 12552 stations worldwideStructure: saved as each day for each station, and then all the daily files of each station were saved as respective ZIP file which named as "site"_2020.trop.zipFormat: IGS TROP format本数据集为2020年全球12552个地基GPS站点产出的5分钟分辨率积分水汽（Integrated Water Vapor, IWV）产品，总计包含1093591492条IWV估算结果。该数据集是对内华达大地测量实验室（Nevada Geodetic Laboratory, NGL）现有业务化GPS IWV数据集的增强版本，增强手段为采用ERA5的高精度气象信息开展GPS IWV反演，时空分辨率显著提升。本数据集适用于高精度应用场景。 【数据集提供方】德国卡尔斯鲁厄理工学院大地测量研究所 【输出产品】5分钟增强型GPS积分水汽产品 【联系方式】彭远（[e-mail]）；杰弗里·布鲁维特（[e-mail]） 【输入数据】 NGL：GPS天顶对流层延迟（Zenith Tropospheric Delay, ZTD）；ERA5气压层产品：气压与Tm NGL：内华达大学内华达大地测量实验室，网址：http://geodesy.unr.edu ERA5：欧洲中期天气预报中心第五代再分析资料，网址：https://www.ecmwf.int 【作者团队】彭远、杰弗里·布鲁维特、科恩·克雷默、威廉·C·哈蒙德、唐纳德·阿古斯、殷勋刚、罗伊兰·范·马尔德伦、迈克尔·迈尔、姜卫平、约瑟夫·阿万格、汉斯约格·库特赫尔 本数据集的详细描述与质量评估已发表于《地球系统科学数据》（Earth System Science Data），详见下文。 若您使用本数据集，请按照以下方式引用数据集及相关论文： [1] 袁鹏、布鲁维特G、克雷默C、哈蒙德W·C、阿古斯D、殷X、范·马尔德伦R、迈尔M、姜W、阿万格J、库特赫尔H：2020年全球万余个地基GPS站点增强型积分水汽数据集，《地球系统科学数据》（Earth System Science Data），15卷，723–743页，https://doi.org/10.5194/essd-15-723-2023，2023年。 [2] 袁鹏, 杰弗里·布鲁维特, 科恩·克雷默, 威廉·C·哈蒙德, 唐纳德·阿古斯, 殷勋刚, 罗伊兰·范·马尔德伦, 迈克尔·迈尔, 姜卫平, 约瑟夫·阿万格, & 汉斯约格·库特赫尔. (2022). 2020年全球万余个地基GPS站点增强型积分水汽数据集[数据集]. Zenodo. https://doi.org/10.5281/zenodo.6973528 >> 文件：NGL2020_12552_blgph.txt 描述：全球12552个GPS站点的坐标信息 格式：第1列：站点名称；第2列：纬度（单位：度）；第3列：经度（单位：度）；第4列：位势高度（单位：位势米） >> ZIP压缩包：数据按站点名称首字母分类存储 描述：全球12552个站点的增强型GPS IWV数据产品 存储结构：按站点每日存储数据，每个站点的所有单日数据打包为对应ZIP压缩包，命名格式为"站点名_2020.trop.zip" 数据格式：IGS TROP格式