Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD026000 |
GPS PPP-derived precipitable water vapor retrieval based on T-m/P-s from multiple sources of meteorological data sets in China | |
Zhang, Hongxing1,2; Yuan, Yunbin1; Li, Wei1; Ou, Jikun1; Li, Ying1; Zhang, Baocheng1 | |
2017-04-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Weighted mean temperature (T-m) and pressure (P-s) are two parameters of great relevance to precipitable water vapor (PWV) retrieval from global positioning system (GPS) data. However, information about the T-m and P-s cannot be available for those GPS stations that are not colocated with meteorological sensors. To investigate the optimal GPS-PWV retrieval method for China, two enhanced T-m models, GM-T-m (temperature dependent) and GH-T-m (temperature independent), are developed. Additionally, the potentials of the P-s data from the two reanalysis data sets, the National Centers for Environmental Prediction (NCEP)-Department of Energy (DOE) Reanalysis II (NCEP II) and ERA-Interim, and from the empirical model GPT2w for GPS-PWV retrieval are investigated over China. To evaluate the performances of multisources T-m and P-s data for GPS-PWV retrieval, GPS data (2011-2013) collected from 22 stations of the Crustal Movement Observation Network of China (CMONOC) were processed by using the precise point positioning (PPP) technique, estimating the zenith tropospheric delay (ZTD) so as to be subsequently converted to GPS-PWV. The retrieved GPS-PWVs are compared with their counterparts derived from NCEP II and radiosonde data over China. The results show that (1) the GM-T-m model consistently shows the highest accuracy (with root mean square error of 2.3 K), and the GH-T-m model should be selected when temperature observations are not available, and that (2) the performances of P-s from NCEP II and ERA-Interim differ marginally for GPS-PWV retrieval, and significant seasonal variations are found in the agreement between the GPS-PWVs and the PWVs derived from NCEP II and radiosonde data over China. |
英文关键词 | precipitable water vapor precise point positioning zenith tropospheric delay weighted mean temperature pressure |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401180800003 |
WOS关键词 | NUMERICAL WEATHER PREDICTION ; ZENITH WET DELAYS ; WEIGHTED MEAN TEMPERATURE ; GLOBAL EMPIRICAL-MODEL ; REAL-TIME RETRIEVAL ; REANALYSIS DATA ; MICROWAVE RADIOMETER ; BEIDOU OBSERVATIONS ; DATA ASSIMILATION ; ERA-INTERIM |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33736 |
专题 | 气候变化 |
作者单位 | 1.Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan, Peoples R China; 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Hongxing,Yuan, Yunbin,Li, Wei,et al. GPS PPP-derived precipitable water vapor retrieval based on T-m/P-s from multiple sources of meteorological data sets in China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(8). |
APA | Zhang, Hongxing,Yuan, Yunbin,Li, Wei,Ou, Jikun,Li, Ying,&Zhang, Baocheng.(2017).GPS PPP-derived precipitable water vapor retrieval based on T-m/P-s from multiple sources of meteorological data sets in China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(8). |
MLA | Zhang, Hongxing,et al."GPS PPP-derived precipitable water vapor retrieval based on T-m/P-s from multiple sources of meteorological data sets in China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.8(2017). |
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