Workshop on Cirrus Clouds and their Supersaturated Environment - Agenda

COST-723 Workshop on Cirrus Clouds and their Supersaturated Environment

11-12 October 2004, Oberpfaffenhofen

Venue: Roter Salon, German Space Operations Centre, DLR, Oberpfaffenhofen



       AGENDA 
       ======

Monday, 11 October

0800 - 0900: Registration

0900 - 1000: Welcome, announcements (Sausen) 
             Overview over COST 723 (Legras)
             [PDF file]
             Introduction into the topics of the workshop (Gierens)
             [PDF file]

1000 - 1200: Session 1 (observations, case studies)
             Chair: Legras

     4 talks (Herman, Heymsfield, Rao, Schiller)
             
     each talk 30 min. including discussion

             Robert Herman: Measurements of humidity in wave clouds from
             MidCiX
             [Abstract] [PDF file]
             
             Andrew Heymsfield: Low temperature supersaturations in wave
             clouds: Observation and Model Comparisons. Observations and
             modeling of high supersaturations in wave clouds
             [Abstract] [PDF file] [Quicktime animation]
             
             Y Jaya Rao: Lidar observations of Cirrus clouds Over Tropical
             Indian Station: Possible influence on Stratosphere Troposphere
             Interaction
             [Abstract] [PDF file]
             
             Cornelius Schiller: Cirrus clouds and RHi in the TTL above the
             Indian Ocean
             [Abstract] [PDF file]
             
1200 - 1330: Lunch

1330 - 1530: Session 2 (observations, case studies, continued)
             Chair: Schiller

     4 talks (Spichtinger, Stubenrauch, Nielsen, Quante)

             Peter Spichtinger: Formation and evolution of ice-supersaturated
             regions
             [Abstract] [PDF file]

             Claudia Stubenrauch: Persistent contrails and their environment
             from TOVS Path-B
             [Abstract] [PDF file]

             Johannes K. Nielsen: Can humidity fluctuation inside cirrus
             clouds be understood in terms of present condensation theory?
             [Abstract] [PDF file]

             Markus Quante: Observations of Turbulence in Cirrus Clouds
             [Abstract] [PDF file]

1530 - 1600: Coffee break

1600 - 1700: Session 3 (New ideas for models)
             Chair: Stubenrauch 

     2 talks (Gettelman, Kärcher)

             Andrew Gettelman: Impacts of Supersaturation in the UT/LS based
             on global models
             [Abstract] [PDF file]

             Bernd Kärcher: Results from near-global, process-oriented studies
             of relative humidity and cirrus and implications for
             parameterization schemes
             [Abstract] [PDF file]

1700 - 1800: Poster Session

1800 - 2000: Break and Transport to hotels in Herrsching

2000 - open end: Dinner (with music) in Seehof Herrsching 

             -------------------------------------------------------

Tuesday, 12 October

0900 - 1000: Poster Session continued

1000 - 1200: a) MC meeting, 
             b) Working groups
             WG I: Observations etc.: 
                Chair Heymsfield, Rapporteur: Möhler 
             WG II: Models etc.: 
                Chair Tompkins , Rapporteur: Spichtinger 

1200 - 1330: Lunch

1330 - 1530: Session 4 (New ideas for models, incl. assimilation)
             Chair: Brown 

     4 talks (Lahoz, Tompkins, Ren, Quaas)
             
             William Lahoz: Assimilation of Water Vapour in the UTLS region
             [Abstract] [PDF file]

             Adrian Tompkins: progress in the representation of ice physics in
             the IFS
             [Abstract] [PDF file]

             Herman G.J. Smit: Upper Troposheric Humidity over the Atlantic:
             Ice Super Saturation and Dryness Observed from MOZAIC-Aircraft
             [PDF file]

             Johannes Quaas: Evaluation of cirrus microphysics in a GCM using
             TOVS satellite data
             [Abstract] [PDF file]

1530 - 1600: Coffee break

1600 - 1700: Reports of the working groups
             [WG1 summary PDF file]
             [WG2 summary PDF file]

1700 - 1730: Final announcements and Good Bye

1730: FINIS


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Posters:

Bertrand Cadet: OPAR lidar sub-tropical cirrus cloud climatology compared to
others
[Abstract]

Kostas Eleftheratos: Trends in Upper-Tropospheric Humidity
[Abstract] [PDF file]

Jean - Francois Gayet: Inter-hemispheric differences in cirrus microphysical
properties as a function of relative humidity
[Abstract] [PDF file]

J. Hendricks: Impacts of Aircraft-Induced Black Carbon on Cirrus Clouds:
Simulations with the ECHAM4-GCM
[PDF file]

Michael Höpfner: Water vapour and clouds from MIPAS on Envisat
[Abstract] [PDF file]

Martina Krämer et al: Nitric acid partitioning in cirrus clouds: the role of
aerosol particles and relative humidity
[Abstract] [PDF file]

Martina Krämer et al.: Quasi stationary relative humidities and respective
relaxation times in ice clouds
[Abstract] [PDF file]

Alexander Mangold: Cirrus cloud microphysics and its dependency on aerosol
type, temperature and cooling rate
[Abstract] [PDF file]

Jack McConnell et al.: Program for study of the potential impact of aviation
emissions including aerosols on the upper troposphere lower stratosphere
region using GEM-AQ
[Abstract] [PDF file]

Sophie Prud'homme: Mid-latitude cirrus cloud simulation and comparison between
observed and calculated lidar and radar measurements
[Abstract]

H.G.J. Smit, D. Kley, and M. Helten: Climatology of upper tropospheric
humidity over the north Atlantic: Seasonal and inter annual variations
[Abstract]

Reinhold Spang: High-resolution limb-observations of trace constituents and
clouds in the UT/LS region
[Abstract] [PDF file]

Florian Weidle and Heini Wernli: Analysis and validation of 3-dimensional
ERA40 cloud ice field
[Abstract] [PDF file]

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