A070
Fast and slow: Centennial to millennial time scale processes in the climate system
Session ID#: 81189
Session Description:
Most climate research focuses either on "fast" or "slow" feedbacks and processes that occur on inter-annual to decadal time scales and centennial to millennial time scales, respectively. While these time scales are commonly treated as being independent, their separation is not obvious or trivial, e.g., "fast" feedbacks change on centennial time scales, ice sheet melt might influence sea level already towards the end of this century, and paleo-proxies often represent less of a steady state then assumed.
This session explores the area between transient and equilibrium states of processes such as slow modes of variability, deep ocean heat and carbon uptake, equilibrium versus Earth system climate sensitivity, and committed impacts on centennial time scales. We welcome contributions which deal with the differentiation of forcing and feedbacks on centennial to millennial time scales regardless of baseline climate state or time interval in models, observations, and paleo proxies.
Co-Organized:
Co-Sponsor(s):
Index Terms:
1620 Climate dynamics [GLOBAL CHANGE]
1622 Earth system modeling [GLOBAL CHANGE]
1630 Impacts of global change [GLOBAL CHANGE]
3344 Paleoclimatology [ATMOSPHERIC PROCESSES]
Primary Convener: Maria Rugenstein, Max Planck Institute for Meteorology, Hamburg, Germany
Conveners: Ricarda Winkelmann, Potsdam Institute for Climate Impact Research, Potsdam, Germany, Gavin L Foster, University of Southampton, Ocean and Earth Science, Southampton, United Kingdom and Richard E Zeebe, Univ Hawaii Manoa, Honolulu, HI, United States
Primary Liaison: Maria Rugenstein, IMAU University Utrecht, Utrecht, Netherlands
Identification of Linear and Nonlinear Causal Relationship Among Low-Frequency Climatic Phenomena in the Last Millennium (500452)
Lucas Massaroppe1, Maria Gabriela Louzada Malfatti2, Igor Stivanelli Custodio1 and Pedro da Silva Dias1, (1)IAG Institute of Astronomy, Geophysics and Atmospheric Sciences, Sao Paulo, Brazil, (2)University of São Paulo, Institute of Energy and Environment, Sao Paulo, Brazil
Slow Modes of Global Temperature Variability in Regions of Weak Radiative Feedbacks (518666)
Robert Jnglin Wills1, Kyle Armour2, Cristian Proistosescu3 and David Battisti1, (1)University of Washington, Seattle, WA, United States, (2)University of Washington, Dept. of Atmospheric Sciences and School of Oceanography, Seattle, WA, United States, (3)University of Washington, JISAO, Seattle, WA, United States
Modeling Millennial Time Scale Changes in Water Balance of Mesoscale Watersheds within Permafrost Regions (529527)
Matvey Vladimirovich Debolskiy1, Vladimir A Alexeev2, Regine Hock3, Dmitry Nicolsky1, Vladimir E Romanovsky1, Jörg Schulla4, Alexander I Shiklomanov5 and Richard B Lammers5, (1)University of Alaska Fairbanks, Fairbanks, AK, United States, (2)Univ Alaska Fairbanks, Fairbanks, AK, United States, (3)Univ of AK-Geophysical Inst, Fairbanks, AK, United States, (4)Self Employed, Zurich, Switzerland, (5)University of New Hampshire, Earth Systems Research Center, Durham, NH, United States
Oceanic controls on the climate response timescales (541827)
Emily Rose Newsom, University of Oxford, Oxford, United Kingdom, Laure Zanna, University of Oxford, Dept. of Physics, Oxford, United Kingdom and Samar Khatiwala, University of Oxford, Earth Sciences, Oxford, United Kingdom
Simulated polar amplification and its causes on decadal to millennial timescales (594925)
Spencer A Hill, UCLA AOS & Caltech GPS, Los Angeles, CA, United States, Natalie Burls, George Mason University, Atmospheric, Oceanic and Earth Sciences, Fairfax, VA, United States and Alexey V Fedorov, Yale Univ, New Haven, CT, United States
The role of the oceanic tunnel in the tropical Pacific response to global warming (609217)
Ulla Heede1, Alexey V Fedorov1 and Natalie Burls2, (1)Yale University, Geology and Geophysics, New Haven, CT, United States, (2)George Mason University, Atmospheric, Oceanic and Earth Sciences, Fairfax, VA, United States
Towards establishing decadal-timescale atmospheric CO2 records during the Middle Miocene Climate Optimum (622836)
Daianne Francis Höfig1, Yige Zhang1, Qin Leng2, Mengxiao Wu2 and Hong Yang2, (1)Texas A&M University College Station, Department of Oceanography, College Station, TX, United States, (2)Bryant University, Laboratory for Terrestrial Environments, Smithfield, RI, United States
Differing climatic mechanisms control transient and accumulated vegetation novelty in Europe and eastern North America (628561)
Kevin D Burke, University of Wisconsin Madison, Nelson Institute for Environmental Studies, Madison, WI, United States, John W Williams, University of Wisconsin, Madison, WI, United States, Simon Brewer, University of Utah, Department of Geography, Salt Lake City, UT, United States, Walter Finsinger, University of Montpellier II, Montpellier, France, Thomas Giesecke, Georg-August-Universitaet Goettingen, Goettingen, Germany, David J Lorenz, University of Wisconsin-Madison, Madison, WI, United States and Alejandro Ordonez, Aarhus University, Aarhus, Denmark
Does current non-carbon dioxide greenhouse gas forcing commit us to 1.5 °C temperature change? (632333)
Alexander J MacIsaac1, Damon Matthews1 and Nadine Mengis2, (1)Concordia University, Department of Geography, Planning and Environment, Montreal, QC, Canada, (2)Simon Fraser University, Burnaby, Canada
