Validating HY-2A CMR precipitable water vapor using ground-based and shipborne GNSS observations
Validating HY-2A CMR precipitable water vapor using ground-based and shipborne GNSS observations
复制标题
使用地面和船载 GNSS 观测验证 HY-2A CMR 可降水蒸气
DOI:
10.5194/amt-13-4963-2020
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发表时间:
2020-03
影响因子:
3.8
通讯作者:
Harald Schuh
中科院分区:
文献类型:
--
作者:
Zhilu Wu;Yanxiong Liu;Yang Liu;Jungang Wang;Xiufeng He;Wenxue Xu;Maorong Ge;Harald Schuh
Abstract. The calibration microwave radiometer (CMR) on board the Haiyang-2A (HY-2A) satellite provides wet tropospheric delay correction for.altimetry data, which can also contribute to the understanding of climate.system and weather processes. The ground-based global navigation satellite.system (GNSS) provides precise precipitable water vapor (PWV) with high.temporal resolution and could be used for calibration and monitoring of the.CMR data, and shipborne GNSS provides accurate PWV over open oceans, which.can be directly compared with uncontaminated CMR data. In this study, the.HY-2A CMR water vapor product is validated using ground-based GNSS.observations of 100 International GNSS Service (IGS) stations along the.global coastline and 56 d shipborne GNSS observations over the Indian.Ocean. The processing strategy for GNSS data and CMR data is discussed in.detail. Special efforts were made in the quality control and reconstruction.of contaminated CMR data. The validation result shows that HY-2A CMR PWV.agrees well with ground-based GNSS PWV with 2.67 mm as the root mean square.(rms) within 100 km. Geographically, the rms is 1.12 mm in the polar region.and 2.78 mm elsewhere. The PWV agreement between HY-2A and shipborne GNSS.shows a significant correlation with the distance between the ship and the.satellite footprint, with an rms of 1.57 mm for the distance threshold of.100 km. Ground-based GNSS and shipborne GNSS agree with HY-2A CMR well.
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影响因子:
5.1
作者:
Xingwei Jiang;Mingsen Lin;Jianqiang Liu;Youguang Zhang;Xuetong Xie;Hailong Peng;Wu Zhou
通讯作者:
Xingwei Jiang;Mingsen Lin;Jianqiang Liu;Youguang Zhang;Xuetong Xie;Hailong Peng;Wu Zhou
DOI:
10.1175/1520-0450(1994)033
发表时间:
1994-04
期刊:
Journal of Applied Meteorology
影响因子:
--
作者:
Julxo C. Calvo;J. Gregory
通讯作者:
Julxo C. Calvo;J. Gregory
DOI:
--
发表时间:
1992
期刊:
--
影响因子:
--
作者:
Jiun-Tsong Wu;Sien-Chong Wu;G. Hajj;W. Bertiger;S. Lichten
通讯作者:
Jiun-Tsong Wu;Sien-Chong Wu;G. Hajj;W. Bertiger;S. Lichten
影响因子:
2.2
作者:
G. Zheng;Jingsong Yang;L. Ren
通讯作者:
G. Zheng;Jingsong Yang;L. Ren
DOI:
10.2753/csa0009-462514023
发表时间:
1981
期刊:
--
影响因子:
--
作者:
Liu Xinwu
通讯作者:
Liu Xinwu