2000•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
Atmospheric water vapor measurements using ground- and satellite-based instrumentation and radiosonde
V. Cuomo, Paolo F. Ambrico, Aldo Amodeo, Antonella Boselli, Paolo Di Girolamo, Vito Lanorte, Marco Pandolfi, Gelsomina Pappalardo, Nicola Pergola, Carla Pietrapertosa, Filomena Romano, Valerio Tramutoli, Nicola Spinelli
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Abstract
In this paper we present an intercomparison between ground based lidar, radiosonde and satellite atmospheric water vapor measurements. Comparisons expressed in terms of water vapor profiles, obtained by Raman lidar and simultaneous ballonborne radiosonde, are reported and discussed. The deviation between the two profiles is smaller than 10 percent up to an altitude of 5 km. Furthermore, the intercomparison between lidar and radiosonde data and between lidar and satellite data is performed also in terms of water vapor columnar content. The agreement between lidar and radiosonde columnar content is better than 4 percent. Water vapor contour map are showed in order to demonstrate the high spatial and temporal variability of water vapor in the lower atmosphere. Difficulties in comparing lidar and satellite water vapor columnar contents associated to H2O spatial and temporal variability are discussed in the paper.