Development of a site-specific ZHD model using radiosonde data

Autor:	Dinesh Singh, Deepak Kashyap, Jayanta Kumar Ghosh
Rok vydání:	2012
Předmět:	Atmospheric pressure Meteorology business.industry Geology Building and Construction Geodesy Precipitable water vapor law.invention Geophysics law Radiosonde Global Positioning System Environmental science New delhi business Zenith
Zdroj:	Acta Geodaetica et Geophysica Hungarica. 47:90-100
ISSN:	1587-1037 1217-8977
Popis:	Estimation of precipitable water vapor (PWV) in the atmosphere using ground based GPS (Global Positioning System) data requires an appropriate model for computation of zenith hydrostatic delay (ZHD). Presented herein is a site-specific ZHD model (SSM) for a station at New Delhi, India. The model has been developed by regressing one-year atmospheric vertical profile data collected through radiosonde. The model based on surface atmospheric pressure at the station, has been validated invoking data of three more years. The ZHD values estimated through the model disagree at the 0.3 mm level with ZHD values obtained from raytracing of radiosonde data. Further, Saastamoinen ZHD model provides an error about 0.23 mm rms while about 0.19 mm by the developed model (SSM). Thus, developed SSM can be used for precise estimation of PWV.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cd940a408c592686f0e3a7652a0be3f0 https://doi.org/10.1556/ageod.47.2012.1.8 Zobrazit plný text záznamu