The Active GPS Reference System (AGRS) is a network of five permanent GPS reference stations in the Netherlands and a GPS data processing and archiving centre.
One of the receivers is located in Delft. The data obtained by the GPS receiver and meteo sensors (see photos) are used to estimate the Integrated Precipitable Water Vapour (IPWV), which is equal to the column height if all water vapour present in the vertical column would condensate to water.
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One of the AGRS GPS receivers. This one is mounted on the roof of the building of the faculty of Geodesy of Delft University of Technology. |
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The meteo flange which is mounted to record pressure, temperature and humidity. |
The following GPS people are involved in the CLARA project:
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For all information on CLARA: clara@knmi.nl (c) Copyright 1996, Last Updated: 17 november 1998 |
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