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Proceedings Paper

Comparison of columnar water vapor measurements using the CO2 DIAL method and GPS data analysis
Author(s): Carlo Bellecci; Gaetano D'Aquila; S. Gabriele; Pasquale Gaudio; Sergio Martellucci; Graziella Ribecco; Maria Richetta
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Paper Abstract

Two remote sensing techniques used to measure water vapor content in the atmosphere are presented: the Lidar/Dial technique and the GPS data analysis method. The dial method, as is well known, can be used to obtain range resolved measurements or an average concentration measurement on the long path using a target topographic method. This methodology permits measurement of the concentration of atmospheric trace gases and, in particular, water vapour profiles. The second remote sensing method is based on an application of the GPS (Global Positioning System). It enables the assessment of the signal propagation delay from satellites to ground-based receivers. Once ground temperature and atmospheric pressure are measured and the GPS signal delay is known, then an estimate of the columnar water vapour content can be performed. In this paper a comparison between the two remote sensing techniques of water vapour measurement are present.

Paper Details

Date Published: 24 February 2004
PDF: 7 pages
Proc. SPIE 5232, Remote Sensing for Agriculture, Ecosystems, and Hydrology V, (24 February 2004); doi: 10.1117/12.510653
Show Author Affiliations
Carlo Bellecci, INFM (Italy)
Univ. degli Studi di Roma Tor Vergata (Italy)
Gaetano D'Aquila, Istituto di Ricerca per la Protezione Idrogeologica, CNR (Italy)
S. Gabriele, Istituto di Ricerca per la Protezione Idrogeologica, CNR (Italy)
Pasquale Gaudio, INFM (Italy)
Univ. degli Studi di Roma Tor Vergata (Italy)
Sergio Martellucci, INFM (Italy)
Univ. degli Studi di Roma Tor Vergata (Italy)
Graziella Ribecco, Istituto di Ricerca per la Protezione Idrogeologica, CNR (Italy)
Maria Richetta, INFM (Italy)
Univ. degli Studi di Roma Tor Vergata (Italy)


Published in SPIE Proceedings Vol. 5232:
Remote Sensing for Agriculture, Ecosystems, and Hydrology V
Manfred Owe; Guido D'Urso; Jose F. Moreno; Alfonso Calera, Editor(s)

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