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## GNSS Monitoring of the Atmospheric Water Vapour over the Leningrad and Neighbouring Regions

Transactions of IAA RAS, issue 49, 23–31 (2019)

Keywords: GNSS, tropospheric delay, atmospheric radio sounding, dynamics of the integrated precipitable water vapour

### Abstract

The dynamics of the atmospheric integrated precipitable water vapor (IPWV) over the Leningrad and adjacent regions have been investigated according to the GNSS database which is maintained at the Pulkovo Observatory. The data of 65 GNSS-stations are used for this study. The mean atmospheric temperature that is required for the IPWV estimation has been calculated both using the surface temperature figures from the nearest meteorological stations and interpolating the data from the global atmospheric database NCEP/NCAR Reanalysis-1. The GNSS IPWV estimations are compared with the data obtained from the local radiosondes and the water vapour radiometer in the Svetloe Observatory. All the data obtained are in good agreement. The IPWV spatial distribution temporal dynamic maps are made for the studied region. The trends of the IPWV (0.34 ± 0.006 mm/10 year) have been estimated as a result of 31 longest GNSS series in this area.

### Citation

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V. L. Gorshkov, A. S. Grishina, N. V. Scherbakova. GNSS Monitoring of the Atmospheric Water Vapour over the Leningrad and Neighbouring Regions // Transactions of IAA RAS. — 2019. — Issue 49. — P. 23–31. @article{gorshkov2019, abstract = {The dynamics of the atmospheric integrated precipitable water vapor (IPWV) over the Leningrad and adjacent regions have been investigated according to the GNSS database which is maintained at the Pulkovo Observatory. The data of 65 GNSS-stations are used for this study. The mean atmospheric temperature that is required for the IPWV estimation has been calculated both using the surface temperature figures from the nearest meteorological stations and interpolating the data from the global atmospheric database NCEP/NCAR Reanalysis-1. The GNSS IPWV estimations are compared with the data obtained from the local radiosondes and the water vapour radiometer in the Svetloe Observatory. All the data obtained are in good agreement. The IPWV spatial distribution temporal dynamic maps are made for the studied region. The trends of the IPWV (0.34 ± 0.006 mm/10 year) have been estimated as a result of 31 longest GNSS series in this area.}, author = {V.~L. Gorshkov and A.~S. Grishina and N.~V. Scherbakova}, doi = {10.32876/ApplAstron.49.23-31}, issue = {49}, journal = {Transactions of IAA RAS}, keyword = {GNSS, tropospheric delay, atmospheric radio sounding, dynamics of the integrated precipitable water vapour}, pages = {23--31}, title = {GNSS Monitoring of the Atmospheric Water Vapour over the Leningrad and Neighbouring Regions}, url = {http://iaaras.ru/en/library/paper/1964/}, year = {2019} } TY - JOUR TI - GNSS Monitoring of the Atmospheric Water Vapour over the Leningrad and Neighbouring Regions AU - Gorshkov, V. L. AU - Grishina, A. S. AU - Scherbakova, N. V. PY - 2019 T2 - Transactions of IAA RAS IS - 49 SP - 23 AB - The dynamics of the atmospheric integrated precipitable water vapor (IPWV) over the Leningrad and adjacent regions have been investigated according to the GNSS database which is maintained at the Pulkovo Observatory. The data of 65 GNSS-stations are used for this study. The mean atmospheric temperature that is required for the IPWV estimation has been calculated both using the surface temperature figures from the nearest meteorological stations and interpolating the data from the global atmospheric database NCEP/NCAR Reanalysis-1. The GNSS IPWV estimations are compared with the data obtained from the local radiosondes and the water vapour radiometer in the Svetloe Observatory. All the data obtained are in good agreement. The IPWV spatial distribution temporal dynamic maps are made for the studied region. The trends of the IPWV (0.34 ± 0.006 mm/10 year) have been estimated as a result of 31 longest GNSS series in this area. DO - 10.32876/ApplAstron.49.23-31 UR - http://iaaras.ru/en/library/paper/1964/ ER -