Precipitable water vapour monitoring using ground based GPS system

Authors

  • N. PUVIARASAN India Meteorological Department, New Delhi – 110 003, India
  • R. K. GIRI India Meteorological Department, New Delhi – 110 003, India
  • MANISH RANALKAR India Meteorological Department, Pune , India

DOI:

https://doi.org/10.54302/mausam.v61i2.802

Keywords:

GPS, PWV, RSRW, Zenith total delay, Zenith Hydrostatic delay, Zenith wet delay, Mapping function

Abstract

The sensing of near real time Precipitable Water Vapour (PWV) using Global Positioning System (GPS) over Indian region were analyzed.  GPS data collected from five stations at hourly interval were utilized to determine near real time PWV using GAMIT software. Sliding window technique was used to derive near real time PWV. The PWV determined from GPS observations of each site were compared with respective radiosonde measurements. The results shows that the derived GPS precipitable water well agree for some stations with the independent radiosonde measurements.  We have also examined the variation of hourly GPS-PWV with hourly rainfall observation and found that PWV increases significantly before the event take place and decreases after the event.

 

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Published

01-04-2010

How to Cite

[1]
N. . PUVIARASAN, R. K. . GIRI, and M. . RANALKAR, “Precipitable water vapour monitoring using ground based GPS system”, MAUSAM, vol. 61, no. 2, pp. 203–212, Apr. 2010.

Issue

Section

Research Papers

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