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Simulation of Contrails in the vortex regime – Examination of the microphysical properties

Unterstrasser, S. and Gierens, K. and Spichtinger, P. (2007) Simulation of Contrails in the vortex regime – Examination of the microphysical properties. In: Proceedings of an International Conference on Transport, Atmosphere and Climate (TAC), pp. 284-288. Office for Official Publications of the European Communities, Luxembourg. TAC Conference, 2006-06-26 - 2006-06-29, Oxford, (UK). ISBN 92-79-04583-0.

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Official URL: http://www.pa.op.dlr.de/tac/proceedings.html

Abstract

In the vortex regime the contrail development is governed by the wake dynamics. The major fraction of the ice crystals is trapped inside the downward travelling vortex pair. For ambient supersaturations below a certain threshold, none of the trapped crystals survive the vortex phase. Only crystals detrained during the descent form the contrail. The ambient relative humidity has a strong impact on the vertical extent of the contrail and on the number of surviving ice crystals, especially in the vortex. Contrail development during the vortex regime was modelled with ambient supersaturations ranging from 0% to 20%. The computationally cheap 2D-code permits a large number of simulations. A realistic vortex decay was ensured using parameterisations of 3Dsimulations. The obtained results give detailed information on initial states for contrail-to-cirrus simulations.

Document Type:Conference or Workshop Item (Poster)
Title:Simulation of Contrails in the vortex regime – Examination of the microphysical properties
Authors:
AuthorsInstitution or Email of Authors
Unterstrasser, S.UNSPECIFIED
Gierens, K.UNSPECIFIED
Spichtinger, P.ETH Zürich, Zürich, CH
Date:September 2007
Journal or Publication Title:Proceedings of an International Conference on Transport, Atmosphere and Climate (TAC)
Page Range:pp. 284-288
Editors:
EditorsEmail
Sausen, RobertUNSPECIFIED
Blum, AnjaUNSPECIFIED
Lee, David S.UNSPECIFIED
Brüning, ClausUNSPECIFIED
Publisher:Office for Official Publications of the European Communities, Luxembourg
Series Name:EUR 22428
ISBN:92-79-04583-0
Status:Published
Keywords:Contrails, Numerical modelling
Event Title:TAC Conference
Event Location:Oxford, (UK)
Event Type:international Conference
Event Dates:2006-06-26 - 2006-06-29
Organizer:DLR, Manchester Metropolitan Univ.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Jana Freund
Deposited On:23 Jun 2008
Last Modified:12 Dec 2013 20:31

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