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Observation of the airflow over the Alps during a foehn event

Hoinka, Klaus-Peter (1985) Observation of the airflow over the Alps during a foehn event. Quarterly Journal of the Royal Meteorological Society, 111, Seiten 199-224. Wiley. doi: 10.1002/qj.49711146709. ISSN 0035-9009.

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Offizielle URL: http://onlinelibrary.wiley.com/doi/10.1002/qj.49711146709/pdf

Kurzfassung

A detailed analysis is presented of the large-scale, mesoscale and local features of a south-foehn event in the Alps on 8 November 1982. On this day, with a substantial cross-mountain flow, instrumented aircraft made programmed flights back and forth across the Alps between southern Germany and northern Italy. Rawinsonde observations were used to complete the data set. A mesoscale double mountain wave with an amplitude of 1 km was found in the upper troposphere, In the mid troposphere above the Inn valley a rather pronounced wave with an amplitude of 2 km and a wavelength of 50 km was analysed. This wave was close to overturning. The foehn turned out to be accompanied by low wave drag at high levels and with strong wave drag at lower levels. Downward southerly (westerly) momentum flux was evaluated to be 0.3 (0.1) Pa. Mountain drag was estimated to be between 1.6 and 6.7Pa. Light to moderate turbulence was observed immediately to the lee in a low-level turbulence zone over the region of strong gusty surface winds. Finally, special attention has been devoted to the similarities and possible differences between foehn in the Alps and chinook in the Rocky Mountains.

elib-URL des Eintrags:https://elib.dlr.de/111836/
Dokumentart:Zeitschriftenbeitrag
Titel:Observation of the airflow over the Alps during a foehn event
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Hoinka, Klaus-PeterDLR, IPANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:1985
Erschienen in:Quarterly Journal of the Royal Meteorological Society
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:111
DOI:10.1002/qj.49711146709
Seitenbereich:Seiten 199-224
Verlag:Wiley
ISSN:0035-9009
Status:veröffentlicht
Stichwörter:mesoscale observations; aircraft observations; momentum flux
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre
Hinterlegt von: Volkert, Dr. Hans
Hinterlegt am:07 Apr 2017 11:31
Letzte Änderung:31 Jul 2019 20:09

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