• ASHUTOSH SRIVASTAVA

      Articles written in Journal of Earth System Science

    • Estimation of GPS-based atmospheric precipitable water vapour over Dehradun

      ASHUTOSH SRIVASTAVA

      More Details Abstract Fulltext PDF

      Precipitable water vapour (PWV) is estimated using GPS data collected from the continuous operating reference station (CORS) located in Dehradun city, a valley in northwestern Himalayan region. PWV is also estimated using two well-established IGS stations observations in India to validate the retrieval process and to investigate PWV variation over these locations. Meteorological observations, required for PWV estimation, are acquired from NCEP by vertical and horizontal interpolation of grid points data for a specific station. The validation and accuracy assessment of all obtained parameters are carried out at different levels. The annual average PWV over Hyderabad (HYDE), Bangalore (IISC), and Dehradun (DEHR) are estimated to be 35.96, 31.70 and 22.10 mm, respectively. The average PWV differences are estimated to be around 1–3 mm if the comparison is made among GMET, IGS and NCEP derived PWVs. Estimated PWV over Dehradun is also compared with reanalysis data from the MERRA and an average difference of about 4 mm is observed.

  • Journal of Earth System Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.