A study of collocation criteria of GNSS COSMIC radio occultation and radiosonde comparisons

Zhang, K, Fu, E, Xu, H, Liou, Y, Le Marshall, J and Kuleshov, Y 2009, 'A study of collocation criteria of GNSS COSMIC radio occultation and radiosonde comparisons ', in Andrew Dempster (ed.) Proceedings of the International Global Navigation Satellite Systems Society IGNSS Symposium 2009, Surfers Paradise, 1 - 3 December 2009, pp. 1-9.


Document type: Conference Paper
Collection: Conference Papers

Title A study of collocation criteria of GNSS COSMIC radio occultation and radiosonde comparisons
Author(s) Zhang, K
Fu, E
Xu, H
Liou, Y
Le Marshall, J
Kuleshov, Y
Year 2009
Conference name IGNSS Symposium 2009
Conference location Surfers Paradise
Conference dates 1 - 3 December 2009
Proceedings title Proceedings of the International Global Navigation Satellite Systems Society IGNSS Symposium 2009
Editor(s) Andrew Dempster
Publisher International Global Navigation Satellite Systems Society
Place of publication Australia
Start page 1
End page 9
Total pages 9
Abstract Monitoring and predicting meteorological conditions with a high accuracy and reliability is a difficult task due to the extremely dynamic nature of our weather systems. This is particularly challenging for the countries in the Southern Hemisphere such as Australia, with much lower number (and density) of weather observation stations compared to the countries in the Northern Hemisphere. Recently, a new atmospheric observation technique, Global Navigation Satellite System (GNSS) radio occultation (RO) for Meteorology, has emerged as an alternative technique for acquiring the Earth's atmospheric characteristics. Recent research has demonstrated the great potential of the new technique to meteorological applications, such as global climate monitoring and numerical weather prediction. Thousands of high-quality globally distributed vertical profiles of refractivity, temperature and water vapour have been obtained on daily basis using the recently launched COSMIC LEO satellites. It is anticipated that GNSS RO technique will play an important role in meteorological studies. Evaluation of the quality of the new data using independent sources of measurements (e.g. reference observations obtained by radiosonde) is of great importance and consequently the requirement for collocation of the two different datasets (GNSS RO data and Radiosonde data) is essential for reliable comparisons
Subjects Navigation and Position Fixing
Keyword(s) GPS
COSMIC
Radio occultation
Climate change
NWP
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