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Gravity waves over the eastern Alps: A synopsis of the 25 October 1999 event (IOP 10) combining in-situ and remote sensing measurements with a high-resolution simulation

Volkert, H. and Keil, C. and Kiemle, C. and Poberaj, G. and Chaboureau, J.P. and Richard, E. (2003) Gravity waves over the eastern Alps: A synopsis of the 25 October 1999 event (IOP 10) combining in-situ and remote sensing measurements with a high-resolution simulation. Quarterly Journal of the Royal Meteorological Society, 129, pp. 777-797. DOI: 10.1256/qj.02.45.

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Official URL: http://www3.interscience.wiley.com/journal/113388514/issueyear?year=2003

Abstract

In situ and lidar data acquired during six repetitive flight legs across Grossglockner (3797 m, highest summit of the eastern Alps) reveal a coherent structure of the mountain-wave field generated by a south-westerly cross-Alpine flow on 25 October 1999 during Intensive Observing Period (IOP) 10 of the Mesoscale Alpine Programme (MAP). The downward-looking laser system sampling at 100 Hz provides distinct wave-induced signatures in the layered clouds below the cruising altitude of about 11 km. Data obtained from three sondes dropped from the aircraft hint at mid-tropospheric wave breaking in the lee of the main Alpine crest. The measurements are juxtaposed with results from a nested, non-hydrostatic simulation (2 km horizontal resolution for the finest grid). Wave-cloud signatures in satellite images (from Meteosat and the National Oceanic and Atmospheric Administration satellites) are used for comparisons with the simulation in a region away from the aircraft track. Sensitivity experiments reveal the regular wave response to be induced by the background profile and re-enforced by the suitably spaced terrain

Document Type:Article
Additional Information:LIDO-Berichtsjahr=2003,
Title:Gravity waves over the eastern Alps: A synopsis of the 25 October 1999 event (IOP 10) combining in-situ and remote sensing measurements with a high-resolution simulation
Authors:
AuthorsInstitution or Email of Authors
Volkert, H.UNSPECIFIED
Keil, C.UNSPECIFIED
Kiemle, C.UNSPECIFIED
Poberaj, G.UNSPECIFIED
Chaboureau, J.P.CNRS and Univ. Paul Sabatier, Toulouse, F
Richard, E.CNRS and Univ. Paul Sabatier, Toulouse, F
Date:2003
Journal or Publication Title:Quarterly Journal of the Royal Meteorological Society
Volume:129
DOI:10.1256/qj.02.45
Page Range:pp. 777-797
Status:Published
Keywords:airborne lidar, foehn, MAP, mountain waves
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Ute Löb
Deposited On:15 Jan 2008
Last Modified:12 Dec 2013 20:00

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