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Titolo:
Low stratospheric water vapor measured by an airborne DIAL
Autore:
Ehret, G; Hoinka, KP; Stein, J; Fix, A; Kiemle, C; Poberaj, G;
Indirizzi:
LIDAR Gruppe, DLR, Deutsches Zentrum Luft & Rauhmfahrt, D-82230 Wessling, Germany LIDAR Gruppe Wessling Germany D-82230 hmfahrt, D-82230 Wessling, Germany Inst Atmospher Phys, DLR, D-82230 Wessling, Germany Inst Atmospher Phys Wessling Germany D-82230 , D-82230 Wessling, Germany Ctr Natl Rech Meteorol, GAME, Toulouse, France Ctr Natl Rech Meteorol Toulouse France Meteorol, GAME, Toulouse, France
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
fascicolo: D24, volume: 104, anno: 1999,
pagine: 31351 - 31359
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIFFERENTIAL ABSORPTION LIDAR; TROPOPAUSE FOLD; TROPOSPHERE; TRANSPORT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Ehret, G LIDAR Gruppe, DLR, Deutsches Zentrum Luft & Rauhmfahrt, Oberpfaffenhofen,Postfach 1116, D-82230 Wessling, Germany LIDAR Gruppe Oberpfaffenhofen,Postfach 1116 Wessling Germany D-82230
Citazione:
G. Ehret et al., "Low stratospheric water vapor measured by an airborne DIAL", J GEO RES-A, 104(D24), 1999, pp. 31351-31359

Abstract

Water vapor measurements are presented which were performed with a newly developed airborne water vapor differential absorption lidar (DIAL). The transmitter of this DIAL system consists of an injection-seeded optical parametric oscillator at a signal wavelength of approximate to 940 nm capable of measuring Very low values of water vapor (10 ppmv). The instrument was tested in an experiment where the aircraft crossed a potential vorticity streamer at about 12 km altitude. The downward looking DIAL can scan vertical cross sections in the atmosphere up to a range of 6 km, with a resolution of about 30 km in the horizontal and 250 m in the vertical. The measured data show significant water vapor structures of 5-100 ppmv within the stratospheric air of the streamer. The measured cross section is compared with fields simulated by a mesoscale model and analyzed from operational data. The comparison of the three data fields shows good agreement in water vapor structures and magnitudes. In addition, the streamer exhibits a clear structure inthe aerosol backscatter lidar scan.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 18:08:23