OS026
Using Paleoclimate and Observational Data to Constrain ENSO Dynamics
Session ID#: 75074
Session Description:
The El Niño-Southern Oscillation (ENSO) drives the single largest pattern of natural climate variability on a global scale. As a growing number of people around the world are vulnerable to natural disasters under a changing climate, there is an urgent need for improved future ENSO projections. However, we have limited understanding of how ENSO will change in a warmer world. Convincing theory is currently lacking, while comprehensive climate models suffer from persistent biases. Paleoclimate reconstructions indicate that ENSO variability has changed substantially in the past in connection with changes in the mean state of the climate system, offering valuable information about processes that control ENSO variability on long timescales. In this session, we invite contributions related to understanding ENSO dynamics through combining theory and models with constraints developed from the paleoclimate and observational record. We encourage submissions that pair paleoclimate and observational data with idealized models and model hierarchies.
Index Terms:
1620 Climate dynamics [GLOBAL CHANGE]
1627 Coupled models of the climate system [GLOBAL CHANGE]
4522 ENSO [OCEANOGRAPHY: PHYSICAL]
4922 El Nino [PALEOCEANOGRAPHY]
Primary Convener: Alyssa R. Atwood, Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States
Convener: Allan J Clarke, Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States
Primary Liaison: Alyssa R. Atwood, Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States
A link triggered by SST between the East Asian and North Americansummer monsoon marginal zone precipitation at various time scales (496552)
Yu Li1, Yichan Li1, Simin Peng1, Xinzhong Zhang1, Chengqi Zhang Dr.2, Wangting Ye1, Yuxin Zhang1, Lingmei Xu1, Qin Han1 and Hebin Liu1, (1)Lanzhou University, Lanzhou, China, (2)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
ENSO signal stability and La Niña bias in North American tree rings (498064)
Max Torbenson1, James Howard Stagge1, David W Stahle2, Edward R Cook3 and Jose Villanueva Diaz4, (1)Ohio State University, Columbus, United States, (2)University of Arkansas, Fayetteville, AR, United States, (3)Columbia University of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (4)Instituto Nacional de Investigaciones Forestales, Laboratorio de Dendrocronologia, Gómez Palacio, Mexico
ENSO expression in Asian Monsoon precipitation oxygen isotopes and its interdecadal change (504696)
Zhongyin Cai, Yunnan University, Institute of International Rivers and Eco-security, Kunming, China, Lide Tian, Institute of International Rivers and Eco-security, Yunnan University, Kunming, China and Gabriel J Bowen, University of Utah, Salt Lake City, UT, United States
Enhanced North American ENSO teleconnection during the Little Ice Age revealed by Paleoclimate Data Assimilation (518693)
Sylvia Dee, Rice University, Department of Earth, Environmental, and Planetary Sciences, Houston, TX, United States, Yuko Okumura, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, Samantha Stevenson, University of California Santa Barbara, Santa Barbara, CA, United States and Pedro N DiNezio, University of Hawai'i at Manoa, Honolulu, HI, United States
Covariance patterns of CMIP5 simulations govern the tropical Pacific response to early 19th century volcanism in coral-based data assimilation reconstructions (525016)
Sara C Sanchez, Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, CA, United States, Gregory J. Hakim, University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States and Casey Saenger, University of Washington Seattle Campus, Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States
ENSO as documented by paleoclimate observations: a long-term context for anthropogenic changes. (Invited) (543677)
Julien Emile-Geay, Univ. of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, Kim M Cobb, Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, Julia E Cole, University of Arizona, Tucson, AZ, United States, Mary Elliot, University de Nantes, LPG UMR6112, Nantes, France and Feng Zhu, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States
Isotopic Expressions of ENSO: The Last Millennium to the 21st Century (Invited) (550135)
Samantha Stevenson, University of California Santa Barbara, Santa Barbara, CA, United States, Brian Powell, Univ. of Hawaii, Honolulu, HI, United States, Kim M Cobb, Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, Jesse M Nusbaumer, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States, David Noone, Oregon State University, College of Earth Ocean and Atmospheric Science, Corvallis, OR, United States, Sloan Coats, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Mark A Merrifield, Sch Ocean & Earth Sci & Tech, Honolulu, HI, United States
More Central Pacific El Niño events in recent decades and simulated El Niño diversity in CMIP5 and CMIP6 models (575787)
Mandy Freund, CSIRO, Sandy Bay, TAS, Australia, Benjamin Henley, University of Melbourne, School of Earth Sciences and ARC Centre of Excellence for Climate Extremes, Parkville, VIC, Australia, Josephine Brown, University of Melbourne, School of Earth Sciences and ARC Centre of Excellence for Climate Extremes, Melbourne, VIC, Australia, Helen V Mcgregor, University of Wollongong, Earth, Atmospheric and Life Sciences, Wollongong, Australia and Jaclyn N Brown, CSIRO, Hobart, TAS, Australia
