A043
Climate Sensitivity and Feedbacks: Advances and New Paradigms
Session ID#: 80087
Session Description:
A major goal of current climate research is to reduce uncertainty in metrics of large-scale forced climate responses, such as the Equilibrium Climate Sensitivity (ECS), the eventual warming in response to doubled atmospheric CO2. The ECS is estimated at 1.5—4.5 K, a range largely due to clouds and other moist processes. These processes are deeply intertwined and are linked to changes in societally important factors such as precipitation. This session explores recent advances in understanding large-scale climate response to climate forcings. We welcome submissions on theory, observations and modelling studies of climate feedbacks, climate sensitivity, and climate responses of precipitation and large-scale dynamics, especially those exploring novel evaluation techniques such as emergent constraints, and new ways of thinking about processes that govern climate's response to external forcing.
Index Terms:
1620 Climate dynamics [GLOBAL CHANGE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3310 Clouds and cloud feedbacks [ATMOSPHERIC PROCESSES]
3337 Global climate models [ATMOSPHERIC PROCESSES]
Primary Convener: Mark Richardson, Jet Propulsion Laboratory, Pasadena, CA, United States
Conveners: Maria Zita Hakuba, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland and Chad William Thackeray, University of Waterloo, Department of Geography and Environmental Management, Waterloo, Canada
Primary Liaison: Mark Richardson, University of British Columbia, Geography, Vancouver, BC, Canada
Nonlinear mode of the climate response to external climate perturbations (495681)
Jian Lu1,2, Fukai Liu3, L. Ruby Leung2 and Huan Lei2, (1)Joint Global Change Research Institute, College Park, MD, United States, (2)Pacific Northwest National Laboratory, Richland, WA, United States, (3)Ocean University of China, Qingdao, China
A 38 year record of UV cloud albedo from SBUV and OMPS instruments: inter-satellite calibration, trends and preliminary comparison with climate models (499458)
Clark j Weaver1, Dong Liang Wu2, Gordon J Labow1 and David Patrick Haffner, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA/Goddard Space Flight Cent, Greenbelt, MD, United States
A Matrix-Based Approach to Feedback Analysis in the Context of a Globally Resolved Energy Balance Model (503081)
Craig H Jackson, Ohio Wesleyan University, Delaware, OH, United States, Mathilde G Rosi-Marshall, University of Virginia, Charlottesville, VA, United States and Vladimir A Alexeev, Univ Alaska Fairbanks, Fairbanks, AK, United States
Equilibrium Climate Sensitivity Controls Regional Warming Uncertainty (513735)
David S Battisti, University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States, Cristian Proistosescu, University of Washington, JISAO, Seattle, WA, United States, Kyle Armour, University of Washington, Dept. of Atmospheric Sciences and School of Oceanography, Seattle, WA, United States and Gerard Roe, University of Washington, Seattle, Department of Earth and Space Sciences, Seattle, WA, United States
Response of global atmospheric energy cycle to climate change (517569)
Xun Jiang, University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States, Yefeng Pan, University of Houston, Houston, TX, United States and Liming Li, University of Houston, Physics Department, Houston, TX, United States
Inter-model spread in CMIP5 feedback time-variation traced to surface warming patterns (529579)
Yue Dong1, Kyle Armour2, David Battisti3, Mark Zelinka4, Cristian Proistosescu5, Chen Zhou6 and Stephen A Klein4, (1)University of Washington, Atmospheric Sciences, Seattle, United States, (2)University of Washington, Dept. of Atmospheric Sciences and School of Oceanography, Seattle, WA, United States, (3)University of Washington, Seattle, WA, United States, (4)Lawrence Livermore National Laboratory, Livermore, CA, United States, (5)University of Washington, JISAO, Seattle, WA, United States, (6)Nanjing University, Department of Geographic Information Science, Nanjing, China
Ocean Heat Uptake Efficiency, Ocean Stratification and Transient Climate Change (536109)
Laure Zanna, University of Oxford, Dept of Physics, Oxford, United Kingdom, Jonathan M Gregory, National Centre for Atmospheric Science, University of Reading, Reading, United Kingdom and Emily Newsom, University of Oxford, Department of Physics, Oxford, United Kingdom
Does the Paleo Record Rule Out High Climate Sensitivities? (Invited) (547008)
Kate Marvel1, Robert Pincus2, Gavin A Schmidt3, Allegra N. LeGrande4 and Ron L Miller3, (1)NASA Goddard Institute for Space Studies, New York, NY, United States, (2)University of Colorado at Boulder, Boulder, CO, United States, (3)NASA/GISS, New York, NY, United States, (4)NASA GISS 568, New York, NY, United States
Paleoclimate Constraints on Climate Sensitivity Modified by Radiative Feedback Dependence on Sea-surface Temperature Patterns (549779)
Kyle Armour1, Natalie Burls2, Cristian Proistosescu3, Yue Dong4, Daniel E Amrhein5 and Gregory J. Hakim4, (1)University of Washington, Dept. of Atmospheric Sciences and School of Oceanography, Seattle, WA, United States, (2)George Mason University, Atmospheric, Oceanic and Earth Sciences, Fairfax, VA, United States, (3)University of Washington, JISAO, Seattle, WA, United States, (4)University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States, (5)University of Washington, School of Oceanography & Dept. of Atmospheric Sciences, Seattle, WA, United States
Linking Short-term Cloud Feedback Spatiotemporal Characteristics with Large-Scale Water Vapor Transport from A-Train Observations and Reanalysis Data (556183)
Qing Yue1, Sun Wong1, Eric J Fetzer2, Tianhao Le3 and Yuk L Yung4, (1)Jet Propulsion Laboratory, Pasadena, CA, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (3)JPL/NASA/Caltech, Pasadena, CA, United States, (4)California Institute of Technology, Pasadena, CA, United States
Spatial radiative feedbacks from internal variability using multiple regression (593020)
Jonah Bloch-Johnson, National Centre for Atmospheric Research, University of Reading, Reading, United Kingdom, Maria Rugenstein, Max Planck Institute for Meteorology, Hamburg, Germany, Dorian S Abbot, The University of Chicago, Chicago, IL, United States and Jonathan M Gregory, National Centre for Atmospheric Science, University of Reading, Reading, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom
How Much Does Plants’ Response to Elevated CO2 Influence the Transient Climate Response? (596172)
Claire Zarakas1, Marysa M Lague1, James Tremper Randerson2, Kyle Armour3 and Abigail L. S. Swann4, (1)University of Washington, Atmospheric Sciences, Seattle, WA, United States, (2)University of California Irvine, Earth System Science, Irvine, CA, United States, (3)University of Washington, Dept. of Atmospheric Sciences and School of Oceanography, Seattle, WA, United States, (4)University of Washington, Atmospheric Sciences and Biology, Seattle, WA, United States
Are climate feedbacks linear with carbon dioxide forcing? (605554)
Jennifer E Kay, Univeristy of Colorado at Boulder, Boulder, CO, United States, Eleanor Middlemas, University of Colorado, CIRES, Boulder, United States, Jason Chalmers, University of Colorado Boulder, Boulder, CO, United States, Elizabeth Maroon, National Center for Atmospheric Research, Boulder, CO, United States and Brian Medeiros, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States
Adjustments from ice sheet forcing at the last glacial maximum (612035)
Robert Pincus1, Katherine Marvel2, Masa Kageyama3, Allegra N. LeGrande4, Brian Medeiros5, Ron L Miller6, Gavin A Schmidt6 and Fiona O'Connor7, (1)University of Colorado at Boulder, Boulder, CO, United States, (2)NASA Goddard Institute for Space Studies, New York, United States, (3)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (4)NASA GISS 568, New York, NY, United States, (5)National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States, (6)NASA/GISS, New York, NY, United States, (7)Met Office Hadley Centre, Exeter, United Kingdom
Probing climate feedbacks on different time-scales with single frequency forcing simulations (622701)
Cristian Proistosescu, University of Washington, Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States, Malte F Stuecker, IBS Center for Climate Physics, Pusan, South Korea, Daniel E Amrhein, University of Washington, Atmospheric Sciences, Seattle, WA, United States, Kyle Armour, University of Washington, Dept. of Atmospheric Sciences and School of Oceanography, Seattle, WA, United States and Nicholas Lutsko, Massachusetts Institute of Technology, Cambridge, MA, United States
Clouds and Sensitivities Across a Hierarchy of GFDL CMIP6 Models (633477)
Levi Glenn Silvers, Princeton University & The Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, David Paynter, NOAA GFDL, Princeton, NJ, United States and Ming Zhao, NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
