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, University of California Santa Cruz, Institute of Marine Sciences, Santa Cruz, GA, United States
Co-chairs:  Melanie R Fewings, 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, NOAA Southwest Fisheries Science Center, Environmental Research Division, Monterey, United States
Primary Liaison:  Mercedes Pozo Buil, University of California Santa Cruz, Institute of Marine Sciences, Santa Cruz, GA, United States
Moderators:  Mercedes Pozo Buil, Georgia Institute of Technology Main Campus, School of Earth and Atmospheric Sciences, Atlanta, GA, United States and Melanie R Fewings, University of Connecticut, Department of Marine Sciences, Groton, United States
Student Paper Review Liaison:  Steven J. Bograd, NOAA Southwest Fisheries Science Center, Environmental Research Division, Monterey, United States

Abstracts Submitted to this Session:

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, GA, United States, Simona Masina, Euro-Mediterranean Center on Climate Change, Ocean Modelling and Data Assimilation, Bologna, Italy and Doroteaciro Iovino, Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC), Bologna, Italy
Momentum and climate governors of the California Undercurrent transport (636784)
Ru Chen, Tianjin University, School of Marine Science and Technology, Tianjin, China, James C McWilliams, University of California, Los Angeles, Los Angeles, United States, Lionel Renault, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States; University of Toulouse, France and Faycal Kessouri, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States
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)Universidad de Las Palmas de Gran Canaria, Física, Las Palmas de Gran Canaria, Spain
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 Gruber2, (1)New York University Abu Dhabi, Center for Prototype Climate Modeling (CPCM), Abu Dhabi, United Arab Emirates, (2)ETH Zurich, Environmental Physics, Zurich, Switzerland
Composite Response of the California Current System to ENSO in the ROMS-NEMURO (653686)
Nathali Cordero Quiros1, Arthur J Miller1, Enrique Curchitser2, Raphael Dussin3, Yunchun Pan4 and Lawrence Angelo Balitaan4, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Rutgers University, Department of Environmental Sciences, New Brunswick, NJ, United States, (3)Rutgers University New Brunswick, Department of Environmental Sciences, New Brunswick, NJ, United States, (4)University of California San Diego, United States
Is EBUS shelf hypoxia imported or home-grown? Observations from northern California (647389)
Kate Hewett, University of California Davis, Bodega Marine Laboratory, Davis, CA, United States and John L Largier, University of California Davis, Coastal & Marine Sciences Institute, Davis, CA, United States
Volume and heat budgets in the coastal California Current System (652724)
Katherine Dorothy Zaba1, Daniel L Rudnick2, Bruce D Cornuelle2, Ganesh Gopalakrishnan2 and Matthew R Mazloff2, (1)Scripps Institution of Oceanography, UCSD, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States
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