A035
Cirrus in the Tropical Upper Troposphere and Lower Stratosphere
Session ID#: 158694
Session Description:
The tropical upper troposphere and lower stratosphere (UTLS) plays an important role in the earth's climate, through widespread cloud cover and the regulation of stratospheric humidity. The UTLS is difficult to observe and model because of the wide variety of scales and processes, from aerosols that serve as ice nuclei to global-scale dynamics that drive the Brewer-Dobson circulation. Recent laboratory studies, field experiments, and remote sensing observations have advanced our understanding of UTLS cirrus, while advances in computation have made possible models that span the range of global to cloud scales. Recent campaigns such as ACCLIP and StratoClim are shedding light on UTLS dynamics and transport of moisture and aerosols over the Asian monsoon region. We welcome abstracts that investigate cloud processes, aerosol-ice interactions, water vapor, and chemistry within the UTLS, that use innovative approaches to integrate observations and models, and that explore the climate impacts of these clouds.
Index Terms:
0320 Cloud physics and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3311 Clouds and aerosols [ATMOSPHERIC PROCESSES]
3362 Stratosphere/troposphere interactions [ATMOSPHERIC PROCESSES]
3371 Tropical convection [ATMOSPHERIC PROCESSES]
Primary Convener: Peter N Blossey, University of Washington, Seattle, United States
Conveners: Kara Lamb, Columbia University, Earth and Environmental Engineering, New York, United States and Sylvia Sullivan, University of Arizona, Tucson, AZ, United States
Student/Early Career Convener: Carly KleinStern, University of Chicago, Department of Physics, Chicago, United States
Infrared heating induced tendency towards stabilization and destabilization effects in cirrus clouds: simulations and observations (1070598)
Ashok Kumar Gupta, Vanderbilt University, Nashville, TN, United States and Ralf Bennartz, Vanderbilt University, Department of Earth and Environmental Sciences, Nashville, United States; University of Wisconsin Madison, Madison, United States
Assessment of Processes Related to The Occurrence of Stratospheric Ice Clouds (1080242)
Ling Zou, Jülich Supercomputing Centre, Julich, Germany, Sabine Griessbach, Forschungszentrum Julich GmbH, Julich, Germany, Lars Hoffmann, Forschungszentrum Jülich GmbH, Jülich Supercomputing Center, Jülich, Germany and Reinhold Spang, Forschungszentrum Jülich GmbH, IEK-7, Jülich 52428, Germany
Evaluation of upper-troposphere lower-stratosphere temperature and moisture over the Asian monsoon region in a storm-resolving model (1090368)
Sylvia Sullivan, University of Arizona, Tucson, AZ, United States, Aiko Voigt, Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Karlsruhe, Germany, Christian Rolf, Forschungszentrum Juelich, IEK-7, Juelich, Germany and Martina Krämer, Forschungszentrum Juelich, Juelich, Germany
Large-Scale Dynamics Control Interannual Variations in TTL Cirrus Clouds, Water Vapor, and Temperature (1092390)
Aodhan John Sweeney, University of Washington Seattle Campus, Atmospheric Science, Seattle, WA, United States and Qiang Fu, University of Washington, Atmospheric Sciences, Seattle, WA, United States
Aerosol indirect effect on cirrus from aircraft observations and climate model simulations (1108609)
Kai Lyu, Texas A&M University College Station, College Station, TX, United States, Xiaohong Liu, Texas A&M University College Station, Department of Atmospheric Sciences, College Station, United States, Minghui Diao, San Jose State University, Department of Meteorology and Climate Science, San Jose, CA, United States and Derek Ngo, San Jose State University, San Jose, CA, United States
Rise of tropical high clouds and the fall of the iris effect (1116883)
Shiv Priyam Raghuraman1, Brian Medeiros2 and Andrew Gettelman1, (1)National Center for Atmospheric Research, Boulder, CO, United States, (2)National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States
The Impact of Volcanic Aerosol Heating on Vertical Diffusion and Overshooting Convection (1169862)
Clarissa Kroll1, Luis Kornblueh1, Hauke Schmidt1, Claudia Timmreck1 and Stephan Fueglistaler2, (1)Max Planck Institute for Meteorology, Hamburg, Germany, (2)Princeton University, Department of Geosciences, Princeton, NJ, United States
Transport across the Tropical Tropopause in a Global Storm Resolving Model (1179598)
Maximilien Bolot, Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, Stephan Fueglistaler, Princeton University, Department of Geosciences, Princeton, NJ, United States, Lucas Harris, Geophysical Fluid Dynamics Laboratory, NOAA, Princeton, United States, Kai-Yuan Cheng, University of Wisconsin Madison, Madison, WI, United States and Linjiong Zhou, NOAA/GFDL, Princeton, NJ, United States
Understanding the Climate Impact of Above-Anvil Cirrus Plume (AACP) in Hydrating the Lower Stratosphere. (1191160)
Karimar Ledesma, University of Wisconsin Madison, Madison, United States, Carly Narotsky, Florida State University, Tallahassee, United States, Osamu Miyawaki, University of Chicago, Department of the Geophysical Sciences, Chicago, United States, Valentine G Anantharaj, Oak Ridge National Laboratory, National Center for Computational Sciences, Oak Ridge, TN, United States and Morgan E O'Neill, Stanford University, Department of Earth System Science, Stanford, CA, United States
The Cold Point Tropopause in DYAMOND GSRMs: Overshooting Convection vs. Cirrus Lofting (1192521)
Jacqueline M Nugent1, Samantha Turbeville1, Christopher Stephen Bretherton2, Peter N Blossey3 and Thomas P Ackerman4, (1)University of Washington, Seattle, WA, United States, (2)University of Washington Seattle Campus, Seattle, United States, (3)University of Washington, Seattle, United States, (4)Univ of WA--JISAO, Seattle, WA, United States
Measurements of the HDO/H2O Isotopic Ratio in the Asian Summer Monsoon (1195858)
Benjamin Clouser1, Carly KleinStern2, Clare E. Singer3, Laszlo Sarkozy1, Sergey Khaykin4, Alexey Lykov5, Fred Stroh6 and Elisabeth J Moyer7, (1)University of Chicago, Geophysical Sciences, Chicago, IL, United States, (2)University of Chicago, Department of Physics, Chicago, United States, (3)University of Chicago, Department of Physics, Chicago, IL, United States, (4)LATMOS, UVSQ/CNRS, Guyancourt, France, (5)Central Aerological Observatory of RosHydroMet, Dolgoprudny, Russia, (6)Forschungszentrum Juelich, Jülich, Germany, (7)University of Chicago, Department of the Geophysical Sciences, Center for Robust Decision-making on Climate and Energy Policy, Chicago, IL, United States
Water Vapor Isotopic Signatures of Moisture Transport in the UT/LS (1196905)
Carly KleinStern, University of Chicago, Department of Physics, Chicago, United States, Benjamin Clouser, University of Chicago, Geophysical Sciences, Chicago, IL, United States, David S Sayres, Harvard University, Cambridge, MA, United States, Jessica B Smith, Harvard Univ/Anderson Group, Cambridge, United States and Elisabeth J Moyer, University of Chicago, Department of the Geophysical Sciences, Center for Robust Decision-making on Climate and Energy Policy, Chicago, IL, United States
