A023:
Characterizing Regional Cirrus Cloud Optical and Microphysical Properties





Session ID#: 27645

Session Description:
Cirrus clouds are the most common atmospheric cloud type.  Cirrus formation is induced in a wide variety of dynamical environments, including tropical convection and cold-trapping at the tropopause, orographic and gravity waves and mid-latitude or polar fronts.  Large variations in ice particle number density, size distribution, habit and surface smoothness in cirrus clouds make them difficult to parameterize within the radiative and optical models necessary to resolve their impact on climate.  This session seeks to relate uncertainties in cirrus cloud microphysical and radiative parameterizations used in atmospheric modeling studies with in situ measurements from balloon and aircraft platforms.  Validation of optical properties derived from current ground and satellite-based remote sensors are further encouraged.  Sensitivity studies showing the impact of cirrus variability on solar and infrared optical properties in cirrus cloud models, microphysical models used for remote passive sensing retrievals and cirrus cloud process studies are also appropriate for this session.
Primary Convener:  Melody A Avery, NASA Langley Research Ctr, Hampton, VA, United States
Conveners:  James R Campbell, Naval Research Lab Monterey, Marine Meteorology, Monterey, CA, United States and Robert Holz, UW SSEC, Madison, WI, United States
Index Terms:

0319 Cloud optics [ATMOSPHERIC COMPOSITION AND STRUCTURE]

Abstracts Submitted to this Session:

Thomas Fauchez1, Steven E Platnick2, Odran Sourdeval3, Chenxi Wang4, Kerry Meyer2, Céline Cornet5 and Frédéric Szczap6, (1)Universities Space Research Association Greenbelt, Greenbelt, MD, United States, (2)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (3)University of Leipzig, Leipzig, Germany, (4)University of Maryland College Park, College Park, MD, United States, (5)Laboratoire d'Optique Atmosphérique, Univ. Lille, CNRS, UMR 8518, Lille, France, (6)Laboratoire de Météorologie Physique, Univ. Clermont Auvergne, CNRS, UMR 6016, Clermont-Ferrand, France
Scott Ozog, University of Maryland College Park, College Park, MD, United States, John E Yorks, NASA Goddard Space Flight Center, Greenbelt, MD, United States and Matthew J McGill, NASA GSFC, Greenbelt, MD, United States
Bastiaan van Diedenhoven1, Ann M Fridlind2, Brian Cairns2, Andrew S Ackerman2 and Jérôme Riedi3, (1)Columbia University of New York, Palisades, NY, United States, (2)NASA GISS, New York, NY, United States, (3)Laboratoire d'Optique Atmosphérique, Univ. Lille, CNRS, UMR 8518, Lille, France
Kafayat Olayinka, Howard University, Washington, DC, United States
Kelly Balmes, University of Washington Seattle Campus, Department of Atmospheric Sciences, Seattle, WA, United States, Qiang Fu, University of Washington Seattle Campus, Seattle, WA, United States and Tyler James Thorsen, NASA Langley Research Center, Hampton, VA, United States
Ann M Fridlind1, Rachel Atlas2, Bastiaan van Diedenhoven3, Andrew S Ackerman1, David H Rind4, Jerry Y Harrington5, Greg M McFarquhar6, Junshik Um7, Robert Jackson8 and Paul Lawson9, (1)NASA GISS, New York, NY, United States, (2)University of Washington, Department of Atmospheric Science, Seattle, WA, United States, (3)Columbia University in the City of New York, Palisades, NY, United States, (4)NASA Goddard Institute for Space Studies, New York, NY, United States, (5)Pennsylvania State Univ, University Park, PA, United States, (6)Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States, (7)University of Oklahoma, Norman, OK, United States, (8)University of Wyoming, Atmospheric Sciences, Laramie, WY, United States, (9)SPEC Inc, Boulder, CO, United States
Robert Austin Ryan, Science Systems and Applications, Inc. Hampton, Hampton, VA, United States, Melody A Avery, NASA Langley Research Center, Hampton, VA, United States and Mark Vaughan, NASA, Hampton, VA, United States
Mark Vaughan1, Stuart A Young2, Melody A Avery1, Sharon D Rodier3, Anne Garnier4, Jason Lucas Tackett4 and Jacques Pelon5, (1)NASA Langley Research Center, Hampton, VA, United States, (2)SSAI, Beaumaris, Australia, (3)LARC NASA, Hampton, VA, United States, (4)Science Systems and Applications, Inc. Hampton, Hampton, VA, United States, (5)CNRS, Paris Cedex 16, France