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| Titel |
Field-deployable diode-laser-based differential absorption lidar (DIAL) for profiling water vapor |
| VerfasserIn |
S. M. Spuler, K. S. Repasky, B. Morley, D. Moen, M. Hayman, A. R. Nehrir |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 3 ; Nr. 8, no. 3 (2015-03-04), S.1073-1087 |
| Datensatznummer |
250116201
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| Publikation (Nr.) |
 copernicus.org/amt-8-1073-2015.pdf |
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| Zusammenfassung |
| A field-deployable water vapor profiling instrument that builds on the
foundation of the preceding generations of diode-laser-based differential
absorption lidar (DIAL) laboratory prototypes was constructed and
tested. Significant advances are discussed, including a unique shared
telescope design that allows expansion of the outgoing beam for eye-safe
operation with optomechanical and thermal stability; multistage optical
filtering enabling measurement during daytime bright-cloud conditions; rapid
spectral switching between the online and offline wavelengths enabling
measurements during changing atmospheric conditions; and enhanced performance
at lower ranges by the introduction of a new filter design and the addition
of a wide field-of-view channel. Performance modeling, testing, and
intercomparisons are performed and discussed. In general, the
instrument has a 150 m range resolution with a 10 min temporal resolution;
1 min temporal resolution in the lowest 2 km of the atmosphere is
demonstrated. The instrument is shown capable of autonomous long-term field
operation – 50 days with a > 95% uptime – under a broad set of
atmospheric conditions and potentially forms the basis for a ground-based
network of eye-safe autonomous instruments needed for the atmospheric
sciences research and forecasting communities. |
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