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Has the aircraft type an impact on the microphysical parameters of young contrails?

Jeßberger, Philipp and Schäuble, Dominik and Voigt, Christiane and Jurkat, Tina and Sölch, Ingo and Petzold, Andreas and Gayet , Jean-Francois and Schumann, Ulrich (2012) Has the aircraft type an impact on the microphysical parameters of young contrails? 3rd International Conference on Transport, Atmosphere and Climate, 25.-28. Jun. 2012, Prien am Chiemsee. (Unpublished)

Full text not available from this repository.

Abstract

Modeling studies suggest an impact of the aircraft type on the microphysical and optical properties of young contrails. However, up to now, a low intercomparability of meteorological conditions has prevented a study on the aircraft effect on contrail properties using in-situ observations. Therefore, we analyze contrail observations from 3 different aircraft, a large A380, a medium sized A340 and a smaller A319, performed during the CONCERT2008 (CONtrail and Cirrus ExpeRimenT) campaign under similar meteorological conditions in terms of relative humidity over ice (RHi) and wind shear. The young contrails were probed on 19 November 2008 over Northern Germany with instruments onboard the DLR research aircraft Falcon. 1-min old contrails were sampled at an altitude of 10.6 km near ice saturation at temperatures of 217 to 218 K above a natural cirrus cloud layer. We find large differences in the 3 observed contrail optical depth distributions, while the aircraft impact is not as pronounced in the detected particle size spectra. In addition, we simulate the contrail properties from the 3 aircraft with two independent models, the Eulerian particle tracking EULAG-LCM model and the contrail and cirrus prediction tool CoCiP. The models generally confirm the observed trend, an increase in contrail optical depth with increasing aircraft size (or weight). However, the models show smaller contrail optical depths for all aircraft types than observations. These discrepancies are reduced assuming higher values for the ambient relative humidity.

Item URL in elib:https://elib.dlr.de/80380/
Document Type:Conference or Workshop Item (Speech)
Title:Has the aircraft type an impact on the microphysical parameters of young contrails?
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jeßberger, Philippphilipp.jessberger (at) dlr.deUNSPECIFIED
Schäuble, DominikUNSPECIFIEDUNSPECIFIED
Voigt, ChristianeUNSPECIFIEDUNSPECIFIED
Jurkat, TinaUNSPECIFIEDUNSPECIFIED
Sölch, IngoUNSPECIFIEDUNSPECIFIED
Petzold, AndreasUNSPECIFIEDUNSPECIFIED
Gayet , Jean-FrancoisUNSPECIFIEDUNSPECIFIED
Schumann, UlrichUNSPECIFIEDUNSPECIFIED
Date:26 June 2012
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:Contrail, optical depth, microphysics, aircraft type
Event Title:3rd International Conference on Transport, Atmosphere and Climate
Event Location:Prien am Chiemsee
Event Type:international Conference
Event Dates:25.-28. Jun. 2012
Organizer:DLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation (old)
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Jeßberger, Philipp
Deposited On:08 Feb 2013 16:34
Last Modified:08 Feb 2013 16:34

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