THE PRELIMINARY EXPERIMENTON DERIVING INTEGRATED ATMOSPHERICWATER VAPOR FROM GROUND-BASED GPS

He Ping; Xu Baoxiang; Zhou Xiuji; Wang Hongyan

Vol.13, NO.2, 2002

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2002 > 13(2): 179-183

He Ping, Xu Baoxiang, Zhou Xiuji, et al. The preliminary experimenton deriving integrated atmosphericwater vapor from ground-based GPS. J Appl Meteor Sci, 2002, 13(2): 179-183.

Citation:

He Ping, Xu Baoxiang, Zhou Xiuji, et al. The preliminary experimenton deriving integrated atmosphericwater vapor from ground-based GPS. J Appl Meteor Sci, 2002, 13(2): 179-183.

He Ping, Xu Baoxiang, Zhou Xiuji, et al. The preliminary experimenton deriving integrated atmosphericwater vapor from ground-based GPS. J Appl Meteor Sci, 2002, 13(2): 179-183.

Citation:

He Ping, Xu Baoxiang, Zhou Xiuji, et al. The preliminary experimenton deriving integrated atmosphericwater vapor from ground-based GPS. J Appl Meteor Sci, 2002, 13(2): 179-183.

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THE PRELIMINARY EXPERIMENTON DERIVING INTEGRATED ATMOSPHERICWATER VAPOR FROM GROUND-BASED GPS

Chinese Academy of Meteorological Sciences, Beijing 100081

Received Date: 2000-07-13
Rev Recd Date: 2001-02-04
Publish Date: 2002-04-30

Abstract

Abstract

The field experiment named "HUAMEX" was conducted in China from May to June 1998. In this experiment, a regional GPS-network that included three ground-based GPS receiving stations (Shantou, Yangjing and Haikou) was established to estimate integrated atmospheric water vapor (IWV) continuously. The comparison of IWV estimates derived from GPS and radiosonde observations for a 51-day period at Shantou station is given. Both have an average bias of 6.5 mm, and the root-mean-square difference is 4.3 mm. The IWV derived from GPS varies with time and it has an obvious period of 7.2 days in average. Moreover, the IWV derived from GPS is compared with the observed surface integrated precipitation hour by hour. The comparison of GPS-derived IWV and integrated surface precipitation indicates that there is a good coincidence between them. The variation period of GPS-IWV is similar to that of surface precipitation. From the time-series of IWV estimated from GPS, the accumulating and releasing processes of water are obvious.
- GPS Dry delay;
- Wet delay;
- Integrated atmospheric water vapor;

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References(9)

Figures and Tables

图 1 1998年5~6月汕头站地面降水量GPS与探空资料反演水汽总量的对比

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图 2 1998年5~6月汕头站探空与GPS反演水汽总量的偏差分布

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表 1 GPS站点地理数据及所用GPS接收机性能参数简表

表 2 汕头1998年5~6月水汽总量统计 (mm)

References

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