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| Titel |
Doppler Rayleigh/Mie/Raman lidar for wind and temperature measurements in the middle atmosphere up to 80 km |
| VerfasserIn |
G. Baumgarten |
| 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 ; 3, no. 6 ; Nr. 3, no. 6 (2010-11-04), S.1509-1518 |
| Datensatznummer |
250001355
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| Publikation (Nr.) |
 copernicus.org/amt-3-1509-2010.pdf |
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| Zusammenfassung |
| A direct detection Doppler lidar for measuring wind speed in
the middle atmosphere up to 80 km with 2 h resolution was
implemented in the ALOMAR Rayleigh/Mie/Raman lidar (69° N,
16° E). The random error of the line of sight wind is
about 0.6 m/s and 10 m/s at 49 km and 80 km, respectively. We use
a Doppler Rayleigh Iodine Spectrometer (DoRIS) at the iodine line 1109
(~532.260 nm). DoRIS uses two branches of intensity cascaded
channels to cover the dynamic range from 10 to 100 km altitude. The
wind detection system was designed to extend the existing multi-wavelength
observations of aerosol and temperature performed at wavelengths of 355 nm, 532 nm and 1064 nm. The lidar uses two lasers with a
mean power of 14 W at 532 nm each and two 1.8 m diameter tiltable
telescopes. Below about 49 km altitude the accuracy and time resolution is
limited by the maximum count rate of the detectors used and not by the number
of photons available. We report about the first simultaneous Rayleigh
temperature and wind measurements by lidar in the strato- and mesosphere on
17 and 23 January 2009. |
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