PC43A:
El Nino-Southern Oscillation (ENSO) Diversity, Predictability, and Impacts III


Session ID#: 36849

Session Description:
The last three boreal winters in the tropical Pacific have exhibited an unlikely and confounding sequence of ENSO states. In the winter of 2014/15, a previously heralded extreme El Nio resulted in only a limited basin-wide warming. This was followed by an extreme El Nio event in the winter of 2015/16, which, however, did not have the strong eastern Pacific warming characteristic of previous extreme events. Also, unlike previous extreme El Nio events, a weaker than expected La Nia followed in 2016 accompanied by an intense warming near the coast of South America (Coastal El Nio) during the 2017 winter. In addition to the unexpected variability during these years, the impacts of ENSO in some remote locations deviated from expectations. These challenges highlight the need for a continued study of ENSO diversity, including its origin, predictability, global impacts, and interactions with anthropogenic climate change. We welcome observational, model, and paleo studies that focus on the challenges brought to light by the recent ENSO sequence, as well as studies of longer-term, multi-decadal ENSO variability, impacts of climate change on ENSO, and general ENSO dynamics.
Primary Chair:  Aaron F Z Levine, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States
Co-chairs:  Antonietta Capotondi, University of Colorado, CIRES, Boulder, United States and Kim M Cobb, Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States
Moderators:  Aaron F Z Levine, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, Antonietta Capotondi, University of Colorado, CIRES, Boulder, United States and Kim M Cobb, Brown Univeristy, Providence, United States
Student Paper Review Liaison:  Aaron F Z Levine, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States
Index Terms:

1616 Climate variability [GLOBAL CHANGE]
4215 Climate and interannual variability [OCEANOGRAPHY: GENERAL]
4522 ENSO [OCEANOGRAPHY: PHYSICAL]
4922 El Nino [PALEOCEANOGRAPHY]
Cross-Topics:
  • AI - Air-Sea Interactions
  • MM - Microbiology and Molecular Ecology
  • PL - Physical Oceanography: Mesoscale and Larger
  • RS - Regional Studies

Abstracts Submitted to this Session:

Characterising ocean phytoplankton biomass for different ENSO flavors (309464)
Priya Sharma, University of Pennsylvania, Philadelphia, PA, United States, Awnesh M Singh, USP, Suva, Fiji, Irina Marinov, University of Pennsylvania, Department of Earth and Environmental Science, Philadelphia, United States and Tihomir S Kostadinov, Assistant Researcher, Earth Research Institute, Santa Barbara, United States
Impacts of the 2015/16 El Niño Event on Microbial Community Dynamics in the Galapagos Archipelago (318419)
Adrian Marchetti, University of North Carolina at Chapel Hill, Department of Earth, Marine and Environmental Sciences, Chapel Hill, United States, Scott Michael Gifford, University of North Carolina at Chapel Hill, Earth, Marine and Environmental Sciences, Chapel Hill, United States, Harvey Seim, University of North Carolina at Chapel Hill, Earth, Marine, and Environmental Sciences, Chapel Hill, NC, United States, Natalie Cohen, University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States, Carly Moreno, University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, United States, Sara Haines, University of North Carolina at Chapel Hill, Earth, Marine, and Environmental Sciences, Chapel Hill, United States, Erika F Neave, Liverpool John Moores University, School of Biological and Environmental Sciences, Liverpool, United Kingdom, Stephen J Walsh, University of North Carolina at Chapel Hill, Geography, Chapel Hill, NC, United States, Diego Paez-Rosas, Universidad San Francisco de Quito, Isla San Cristobal, Ecuador and Carlos Mena, Universidad San Francisco de Quito, Instituto de Geografia, Quito, Ecuador
ENSO Drives O2 Variability and Hypoxic Extremes throughout the Tropical Pacific (322409)
Shirley Leung, University of Washington Seattle Campus, Seattle, WA, United States, LuAnne Thompson, University of Washington, Oceanography, Seattle, United States and Allison Smith-Mislan, University of Washington, School of Oceanography, Seattle, WA, United States
Climate Change and ENSO Impacts on Southern California Sea Urchins: Informing Fisheries Management Adaptation Plans (316775)
Kirk Sato, OIST Okinawa Institute of Science and Technology, Marine Biophysics Unit, Tancha, Japan; Scripps Institution of Oceanography, La Jolla, CA, United States and Lisa A Levin, Scripps Institution of Oceanography, Integrative Oceanography Division, La Jolla, CA, United States
On the fragile relationship between El Nino and California rainfall (315709)
Dr. Sang-Ki Lee, NOAA/OAR/Atlantic Oceanographic and Meteorological Laboratory, Miami, United States, Hosmay Lopez, Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States, Eui-Seok Chung, University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL, United States, Pedro N DiNezio, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, Sang-Wook Yeh, Ewha Womans University, Climate and Energy Systems Engineering, Seoul, South Korea and Andrew Thorne Wittenberg, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Altimetric Analyses of the 2014-2016 El Niño Events: Connections Between the Equator and West Coast of North America (302951)
P Ted Strub, Corinne James and Craig M Risien, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
Regional ocean variability off Galapagos and California during the 2014-2017 El Niño events as observed by underwater gliders (312235)
Daniel L Rudnick1, Breck Owens2, Kristopher B Karnauskas3, Shaun Johnston1, Katherine Dorothy Zaba4 and Robert E Todd5, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Woods Hole Oceanographic Institution, MA, United States, (3)Cooperative Institute for Research in Environmental Sciences, Boulder, United States, (4)Scripps Institution of Oceanography, UCSD, La Jolla, CA, United States, (5)Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States
Eastern boundary circulation and hydrography off Peru during the 2017 Coastal El Niño (318676)
Jan Luedke1, Marcus Dengler1, Gerd Krahmann1, Sunke Schmidtko1, Soeren Thomsen1 and Martin Visbeck2,3, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)OceanQuest, Thuwal, Saudi Arabia, (3)University of Kiel, Kiel, Germany

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