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On the upper tropospheric formation and occurrence of high and thin cirrus clouds during anticyclonic poleward Rossby wave breaking events

Eixmann, Ronald and Peters, Dieter H.W. and Zülicke, Christoph and Gerding, Michael and Dörnbrack, A. (2010) On the upper tropospheric formation and occurrence of high and thin cirrus clouds during anticyclonic poleward Rossby wave breaking events. Tellus A - Dynamic Meteorology and Oceanography, 62, pp. 228-242. DOI: 10.1111/j.1600-0870.2010.00437.x.

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Official URL: http://www.ingentaconnect.com/content/mksg/tea/2010/00000062/00000003/art00003

Abstract

Ground-based lidar measurements and balloon soundings were employed to examine the dynamical link between anticyclonic Rossby wave breaking and cirrus clouds from 13 to 15 February 2006. For this event, an air mass with low Ertel's potential vorticity appeared over Central Europe. In the tropopause region, this air mass was accompanied with both an area of extreme cold temperatures placed northeastward, and an area of high specific humidity, located southwestward. ECMWF analyses reveal a strong adiabatic northeastward and upward transport of water vapour within the warm conveyor belt on the western side of the ridge over Mecklenburg, Northern Germany. The backscatter lidar at Kühlungsborn (54.1°N, 11.8°E) clearly identified cirrus clouds at between 9 and 11.4 km height. In the tropopause region high-vertical resolution radiosoundings showed layers of subsaturated water vapour over ice but with a relative humidity over ice >80%. Over Northern Germany radiosondes indicated anticyclonically rotating winds in agreement with backward trajectories of ECMWF analyses in the upper troposphere, which were accompanied by a relatively strong increase of the tropopause height on 14 February. Based on ECMWF data the strong link between the large-scale structure, updraft and ice water content was shown

Document Type:Article
Title:On the upper tropospheric formation and occurrence of high and thin cirrus clouds during anticyclonic poleward Rossby wave breaking events
Authors:
AuthorsInstitution or Email of Authors
Eixmann, RonaldUniv. Rostock, Ostseebad Kühlungsborn
Peters, Dieter H.W.Univ. Rostock, Ostseebad Kühlungsborn
Zülicke, ChristophUniv. Rostock, Ostseebad Kühlungsborn
Gerding, MichaelUniv. Rostock, Ostseebad Kühlungsborn
Dörnbrack, A.DLR
Date:2010
Journal or Publication Title:Tellus A - Dynamic Meteorology and Oceanography
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:62
DOI:10.1111/j.1600-0870.2010.00437.x
Page Range:pp. 228-242
Status:Published
Keywords:Cirrus clouds, Lidar, Rossby wave breaking, Lagrangeian trajectories
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: Jana Freund
Deposited On:12 May 2010 16:50
Last Modified:12 Dec 2013 20:57

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