PI31A:
Water Mass Variability in Eastern Boundary Upwelling Systems: Climate Drivers and Ecosystem Impacts I

Session ID#: 92472

Session Description:
Highly productive Eastern Boundary Upwelling Systems (EBUS) present a confluence of different water masses, and variability in the relative contributions and depth structure of these source waters can impact biogeochemical cycles and ecosystem structure. Changes in upwelling source water characteristics may impact the magnitude and species composition of primary producers, with impacts on higher trophic levels. In the California Current, for example, variations in the relative influence of subarctic and tropical source waters affect the abundance, species composition and distribution of fish species. The El Niño-Southern Oscillation is a dominant driver of interannual variability in Pacific EBUS water mass distribution. Long-term trends in deoxygenation and decreasing pH levels in EBUS upwelled waters may also be linked to climate-driven changes. In this session we invite interdisciplinary presentations investigating changes in the physical, biological, and chemical characteristics of the EBUS source water masses and their impacts on marine ecosystems. Studies that combine observational and modeling efforts and that focus on climate change impacts are of particular interest.
Co-Sponsor(s):
  • PC - Past, Present and Future Climate
  • PL - Physical Oceanography: Mesoscale and Larger
Index Terms:

4215 Climate and interannual variability [OCEANOGRAPHY: GENERAL]
4279 Upwelling and convergences [OCEANOGRAPHY: GENERAL]
4283 Water masses [OCEANOGRAPHY: GENERAL]
4516 Eastern boundary currents [OCEANOGRAPHY: PHYSICAL]
Primary Chair:  Mercedes Pozo Buil, Institute of Marine Science, University of California Santa Cruz, Santa Cruz, United States
Co-chairs:  Prof. Melanie R Fewings, PhD, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Carmen G Castro, Instituto de Investigación Mariñas - CSIC, Departamento de Oceanografía, Vigo, Spain and Steven J. Bograd, National Oceanic and Atmospheric Administration, Southwest Fisheries Science Center, Monterey, United States
Primary Liaison:  Mercedes Pozo Buil, Institute of Marine Science, University of California Santa Cruz, Santa Cruz, United States
Moderators:  Mercedes Pozo Buil, Georgia Institute of Technology Main Campus, School of Earth and Atmospheric Sciences, Atlanta, United States and Prof. Melanie R Fewings, PhD, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
Student Paper Review Liaison:  Steven J. Bograd, National Oceanic and Atmospheric Administration, Southwest Fisheries Science Center, Monterey, United States

Abstracts Submitted to this Session:

PI31A-01
Climate drivers of variability within and across the major Eastern Boundary Upwelling Systems (643169)
Giulia Bonino, Euro-Mediterranean Center on Climate Change, Bologna, Italy, Emanuele Di Lorenzo, Georgia Inst Tech, Earth and Atmospheric Sciences, Atlanta, United States, Simona Masina, Euro-Mediterranean Center on Climate Change (CMCC), Italy and Doroteaciro Iovino, Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici - CMCC, Bologna, Italy
PI31A-02
Momentum and climate governors of the California Undercurrent transport (636784)
Ru Chen1, James C McWilliams2, Lionel Renault2,3 and Faycal Kessouri4, (1)Tianjin University, School of Marine Science and Technology, Tianjin, China, (2)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States, (3)University of Toulouse, France, (4)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States
PI31A-03
Circulation patterns estimated by an inverse model in Cabo Verde Frontal Zone (647263)
Nadia Burgoa1, Francisco Machin2, Angel A Rodriguez-Santana2, Ángeles Marrero-Díaz2 and Antonio Martínez-Marrero3, (1)Universidad de Las Palmas de Gran Canaria, Physics, Las Palmas de Gran Canaria, Spain, (2)Universidad de Las Palmas de Gran Canaria, OFYGA, Departamento de Física, Las Palmas de Gran Canaria, Spain, (3)Unidad Océano y Clima, Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Unidad Asociada ULPGC-CSIC, Las Palmas de Gran Canaria, Spain
PI31A-04
A Lagrangian study of the contribution of the Canary coastal upwelling to the open North Atlantic nitrogen budget (650789)
Derara Hailegeorgis1, Zouhair Lachkar1, Christoph Rieper2 and Nicolas Gruber3, (1)New York University Abu Dhabi, Center for Prototype Climate Modeling (CPCM), Abu Dhabi, United Arab Emirates, (2)ETH Zurich, Environmental Physics, Zurich, Switzerland, (3)Environmental Physics, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zurich, Switzerland
PI31A-05
Composite Response of the California Current System to ENSO in the ROMS-NEMURO (653686)
Nathali Cordero Quiros1, Arthur J Miller2, Enrique Curchitser3, Raphael Dussin4, Yunchun Pan5 and Lawrence Angelo Balitaan5, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, United States, (3)Rutgers University, Department of Environmental Sciences, New Brunswick, NJ, United States, (4)Rutgers University New Brunswick, Department of Environmental Sciences, New Brunswick, United States, (5)University of California San Diego, United States
PI31A-06
Is EBUS shelf hypoxia imported or home-grown? Observations from northern California (647389)
Kate Hewett, University of Washington, School of Oceanography, Seattle, United States and John L Largier, University of California Davis, Coastal & Marine Sciences Institute, Davis, United States
PI31A-07
Volume and heat budgets in the coastal California Current System (652724)
Katherine Dorothy Zaba1, Daniel L Rudnick2, Bruce D Cornuelle3, Ganesh Gopalakrishnan3 and Matthew R Mazloff3, (1)Scripps Institution of Oceanography, UCSD, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)Scripps Institution of Oceanography, La Jolla, United States
PI31A-08
Temporal Variability of the Dissolved Oxygen in the Southern California Current System (657825)
Norma Lidia Oliva, Universidad Autonoma de Baja California, Ensenada, Mexico, Jose Martin Martin Hernandez-Ayon, Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanologicas, Ensenada, BC, BJ, Mexico, Jose Augusto Valencia Gasti, Universidad Autonoma de Baja California, Facultad de Ciencias Marinas, Ensenada, Mexico, Reginaldo Durazo, UABC, Ensenada, B.C., CA, United States, Eduardo Santamaria-del-Angel, Universidad Autonoma de Baja California, Ensenada, BJ, Mexico and Tim R Baumgartner, CICESE, Biological Oceanography, Ensenada, CA, Mexico
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