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Ground-based GPS receivers measure the Zenith Total Delay (ZTD) in mm which is the sum of the Zenith Hydrostatic Delay (ZHD) caused by the atmospheres dry components and the Zenith Wet Delay (ZWD) resulting mainly from atmospheric water vapor.


Knowing the atmospheric pressure ZWD can be derived and in a second step converted to the Integrated Water Vapor (IWV).

Name Code PI Location Temp. Reso. No. stations Products Data/Day Availability
GFZ GPS Standard net gps_gfzn Dick Central Europe 15 min ∼200 ZTD, ZWD, IWV ∼100 KB check
GPS Standard Switzerland gps_swit Brocard Switzerland 1 h ∼30 ZTD, ZWD, IWV ∼80 KB check

Susanne Crewell 2007/03/25 12:04

gop_5.txt · Last modified: 2021/01/22 22:19 by