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Evaluation of a coherent 2-µm differential absorption lidar for water vapor and radial wind velocity measurements

The performance of a coherent 2-µm differential absorption lidar (DIAL) for simultaneously measuring water vapor (H O) and radial wind velocity was evaluated. For measuring H O, a wavelength locking technique was applied to the H O-DIAL system. The H O-DIAL system was evaluated under summer daytime...

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Bibliographic Details
Published in:Optics express 2023-04, Vol.31 (9), p.13817-13836
Main Authors: Iwai, Hironori, Aoki, Makoto
Format: Article
Language:English
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Summary:The performance of a coherent 2-µm differential absorption lidar (DIAL) for simultaneously measuring water vapor (H O) and radial wind velocity was evaluated. For measuring H O, a wavelength locking technique was applied to the H O-DIAL system. The H O-DIAL system was evaluated under summer daytime conditions in Tokyo, Japan. H O-DIAL measurements were compared with measurements from radiosondes. The H O-DIAL-derived volumetric humidity values agreed with the radiosonde-derived values over the range from 11 to 20 g/m with a correlation coefficient of 0.81 and a root-mean-square difference of 1.46 g/m . Comparisons between the H O-DIAL and the in-situ surface meteorological sensors demonstrated the simultaneous measurement of H O and radial wind velocity.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.485608