Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological Techniques
We present results of the comparison of integrated precipitable water measurements from GPS solution and aerological techniques: CIMEL-318 sun-photometer and radiosoundings (RAOB). Integrated Precipitable Water (IPW) - important meteorological parameter is derived from GPS tropospheric solutions by...
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Online Access: | https://doi.org/10.2478/rgg-2015-0001 |
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doaj-b2a12106b5c84c86b511fd25151924322021-09-05T14:01:23ZengSciendoReports on Geodesy and Geoinformatics2391-81522015-07-0198111710.2478/rgg-2015-0001rgg-2015-0001Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological TechniquesKruczyk Michał0Liwosz Tomasz1Department of Geodesy and Geodetic Astronomy, Faculty of Geodesy and Cartography, Warsaw University of Technology, Warsaw, PolandDepartment of Geodesy and Geodetic Astronomy, Faculty of Geodesy and Cartography, Warsaw University of Technology, Warsaw, PolandWe present results of the comparison of integrated precipitable water measurements from GPS solution and aerological techniques: CIMEL-318 sun-photometer and radiosoundings (RAOB). Integrated Precipitable Water (IPW) - important meteorological parameter is derived from GPS tropospheric solutions by known procedure for GPS station at Polish Polar Station, Hornsund (Svalbard). The relation between 2 m temperature and the mean temperature of atmosphere above, used to convert from wet part of tropospheric delay (ZWD) to IPW, has been derived using local radiosonde data at Ny Alesund. Sunphotometer data have been provided by AERONET. Quality of dedicated tropospheric solutions has been verified by comparison with EPN tropospheric combined product. Several IPW comparisons and analyses lead to determination of systematic difference between techniques: GPS IPW and sunphotometer data (not present in case of RAOBs). IPW measured by CIMEL is on average 5% bigger (0.5 mm) than IPW from GPS. This bias changes seasonally and is a function of atmospheric temperature what signals some systematic deficiencies in solar photometry as IPW retrieval technique. CIMEL IPW show some temperature dependent bias also in relation to radiosoundings.https://doi.org/10.2478/rgg-2015-0001water vapourgpsipwiwvtropospheric delaysunphotometerradiosoundingspolar research |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kruczyk Michał Liwosz Tomasz |
spellingShingle |
Kruczyk Michał Liwosz Tomasz Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological Techniques Reports on Geodesy and Geoinformatics water vapour gps ipw iwv tropospheric delay sunphotometer radiosoundings polar research |
author_facet |
Kruczyk Michał Liwosz Tomasz |
author_sort |
Kruczyk Michał |
title |
Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological Techniques |
title_short |
Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological Techniques |
title_full |
Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological Techniques |
title_fullStr |
Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological Techniques |
title_full_unstemmed |
Integrated Precipitable Water Vapour Measurements At Polish Polar Station Hornsund From GPS Observations Verified By Aerological Techniques |
title_sort |
integrated precipitable water vapour measurements at polish polar station hornsund from gps observations verified by aerological techniques |
publisher |
Sciendo |
series |
Reports on Geodesy and Geoinformatics |
issn |
2391-8152 |
publishDate |
2015-07-01 |
description |
We present results of the comparison of integrated precipitable water measurements from GPS solution and aerological techniques: CIMEL-318 sun-photometer and radiosoundings (RAOB). Integrated Precipitable Water (IPW) - important meteorological parameter is derived from GPS tropospheric solutions by known procedure for GPS station at Polish Polar Station, Hornsund (Svalbard). The relation between 2 m temperature and the mean temperature of atmosphere above, used to convert from wet part of tropospheric delay (ZWD) to IPW, has been derived using local radiosonde data at Ny Alesund. Sunphotometer data have been provided by AERONET. Quality of dedicated tropospheric solutions has been verified by comparison with EPN tropospheric combined product. Several IPW comparisons and analyses lead to determination of systematic difference between techniques: GPS IPW and sunphotometer data (not present in case of RAOBs). IPW measured by CIMEL is on average 5% bigger (0.5 mm) than IPW from GPS. This bias changes seasonally and is a function of atmospheric temperature what signals some systematic deficiencies in solar photometry as IPW retrieval technique. CIMEL IPW show some temperature dependent bias also in relation to radiosoundings. |
topic |
water vapour gps ipw iwv tropospheric delay sunphotometer radiosoundings polar research |
url |
https://doi.org/10.2478/rgg-2015-0001 |
work_keys_str_mv |
AT kruczykmichał integratedprecipitablewatervapourmeasurementsatpolishpolarstationhornsundfromgpsobservationsverifiedbyaerologicaltechniques AT liwosztomasz integratedprecipitablewatervapourmeasurementsatpolishpolarstationhornsundfromgpsobservationsverifiedbyaerologicaltechniques |
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1717810270180474880 |