Reliability Analysis of European ERA5 Water Vapor Content Based on Ground-based GPS in China

DOI

10.2991/wcnme-19.2019.11How to use a DOI?

Keywords

GPS; ERA5; Precipitable Water Content (PWV); annual variation; diurnal variation

Abstract

On the basis of GPS data at stations of different climatic types in China, precipitable water vapor (PWV) products in year 2016 were obtained through precision data processing and water vapor inversion. On the basis of these products, the reliability of accuracy, annual variation, and diurnal variation of water vapor content for the first hourly resolution global reanalysis data ERA5 was systematically evaluated in China and compared with the previous generation of ERA-Interim analysis data. Results show that the annual and diurnal variation characteristics of PWV in different regions are mainly affected by monsoon and sunlight, respectively. The PWV accuracy provided by ERA5 is better than that of ERA-Interim. The two kinds of reanalysis data adequately reflect the annual variation characteristics of PWV, and the diurnal variation deviation of ERA5 is smaller than that of ERA-Interim in general, especially in the Qinghai–Tibet Plateau area.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hongzhen Yang
AU  - Chen He
AU  - Zhiqiang Wang
AU  - Weiping Shao
PY  - 2019/06
DA  - 2019/06
TI  - Reliability Analysis of European ERA5 Water Vapor Content Based on Ground-based GPS in China
BT  - Proceedings of the 2019 International Conference on Wireless Communication, Network and Multimedia Engineering (WCNME 2019)
PB  - Atlantis Press
SP  - 44
EP  - 49
SN  - 2352-538X
UR  - https://doi.org/10.2991/wcnme-19.2019.11
DO  - 10.2991/wcnme-19.2019.11
ID  - Yang2019/06
ER  -