PO14E:
Observing and Modeling the Meridional Overturning Circulation in the South Atlantic: Causes of Variability and Impacts on Climate, Weather, and Ecosystems II Posters


Session ID#: 11465

Session Description:
The meridional overturning circulation (MOC) in the Atlantic is a key element of the time-variable coupled climate system and may have played a significant role in the subsurface sequestration of heat during the recent global warming hiatus.  The South Atlantic Ocean is unique in its role as a nexus and melting pot for water masses formed elsewhere and transiting between the far regions of the World Ocean. In the past decade, the South Atlantic MOC observing system has expanded to include moored arrays and intense hydrographic surveys, providing tantalizing glimpses of the variability introduced to the MOC. Here, we invite contributions of recent studies quantifying and analyzing South Atlantic MOC (SAMOC) variability over time scales ranging from intra-seasonal to decadal using recently collected in situ observations, remotely sensed data, theory, and numerical modeling. This includes, but is not limited to: an exploration of the local and remote SAMOC forcing mechanisms, analysis of how SAMOC variations relate to inter-ocean exchanges and storage of heat, salt, and nutrients, and an evaluation of the impacts of SAMOC on regional and global climate, extreme weather, and/or marine ecosystems.
Primary Chair:  Maria Paz Chidichimo, Argentine Scientific Research Council (CONICET); Hydrographic Service, Buenos Aires, Argentina
Chairs:  Rebecca Marie Hummels, GEOMAR, Kiel, Germany, Renellys C Perez, UM/CIMAS & NOAA/AOML, Miami, FL, United States and Regina Rodrigues, UFSC Federal University of Santa Catarina, Florianópolis, Brazil
Moderators:  Maria Paz Chidichimo, Argentine Scientific Research Council (CONICET); Hydrographic Service, Buenos Aires, Argentina, Renellys C Perez, UM/CIMAS, Miami, FL, United States, Rebecca Marie Hummels, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Regina Rodrigues, UFSC Federal University of Santa Catarina, Florianópolis, Brazil
Student Paper Review Liaison:  Maria Paz Chidichimo, Argentine Scientific Research Council (CONICET); Hydrographic Service, Buenos Aires, Argentina
Index Terms:

1637 Regional climate change [GLOBAL CHANGE]
4215 Climate and interannual variability [OCEANOGRAPHY: GENERAL]
4262 Ocean observing systems [OCEANOGRAPHY: GENERAL]
4513 Decadal ocean variability [OCEANOGRAPHY: PHYSICAL]
Co-Sponsor(s):
  • A - Air-sea Interactions and Upper Ocean Processes
  • HE - High Latitude Environments
  • ME - Marine Ecosystems
  • PC - Past, Present and Future Climate

Abstracts Submitted to this Session:

 
Linking the South Atlantic Meridional Overturning Circulation and the Global Monsoons (Invited) (87094)
Hosmay Lopez1,2, Shenfu Dong3, Gustavo Jorge Goni4 and Sang-Ki Lee2, (1)Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States, (2)University of Miami, Cooperative Institute for Marine and Atmospheric Studies, Miami, FL, United States, (3)University of Miami, Miami, FL, United States, (4)NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States
 
Initiate Paper 87092 - Effects of variability in the Agulhas Leakage on the western boundary systems of the South and tropical Atlantic Ocean (Invited) (87092)
Paola Castellanos1, Edmo J Campos2, Jaume Piera3, Olga T Sato2 and Maria A. F. Silva Dias4, (1)Instituto Oceanografico, Universidade de São Paulo, Dept. of Physical, Chemical and Geological Oceanography, São Paulo, Brazil, (2)USP University of Sao Paulo, São Paulo, Brazil, (3)Institute of Marine Sciences, Department of Physical and Technological Oceanography, Barcelona, Spain, (4)Instituto de Astronomia, Geofísica e Ciencias Atmosféricas, São Paulo, Brazil
 
Investigating the relationship between Agulhas leakage and Southern Hemisphere westerlies in a coupled system (90479)
Yu Cheng1, Lisa M Beal2, Ben P Kirtman2 and Dian Putrasahan1, (1)RSMAS, Miami, FL, United States, (2)University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL, United States
 
South Atlantic Meridional overturning circulation in an eddy-resolving global numerical simulation (89573)
Xiaobiao Xu1, Shenfu Dong2, Molly O'Neil Baringer3, Gustavo Jorge Goni4 and Eric Chassignet1, (1)Florida State University, Center for Ocean-Atmospheric Prediction Studies, Tallahassee, FL, United States, (2)University of Miami, Miami, FL, United States, (3)NOAA/AOML/PHOD, Miami, FL, United States, (4)NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States
 
An Observations and Model Based Analysis of Meridional Transports in the South Atlantic (91594)
Sudip Majumder, The Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, United States, Claudia Schmid, NOAA/AOML, PHOD, Miami, FL, United States and George R Halliwell Jr, NOAA Miami, Miami, FL, United States
 
Circulation and Water Mass Variability in the South Atlantic Subtropical Gyre (89899)
Renellys C Perez, UM/CIMAS, Miami, FL, United States, Rym Msadek, GFDL/NOAA Princeton University, Princeton, NJ, United States, Silvia Lucia Garzoli, UM/CIMAS & NOAA/AOML, Miami, FL, United States, Ricardo P Matano, Oregon State Univ, Corvallis, OR, United States, Christopher S Meinen, Atlantic Oceanographic and Meteorological Laboratory, Physical Oceanography Division, Miami, FL, United States and Maria Paz Chidichimo, National Scientific and Technical Research Council (CONICET) / SHN, Buenos Aires, Argentina
 
Transport contribution of the Good Hope Jet to the South Atlantic MOC (92609)
Michael John Roberts, Nelson Mandela Metropolitan University, Dept. Oceanography, Port Elizabeth, South Africa
 
Interannual to Decadal Changes in the Western Boundary Circulation in the Atlantic at 11°S (92541)
Rebecca Marie Hummels1, Peter Brandt1, Marcus Dengler1, Jürgen Fischer2, Moacyr Araujo3, Doris A Veleda3 and Jonathan V Durgadoo1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Kiel, Germany, (3)DOCEAN, Department of Oceanography, UFPE, Recife, Brazil
 
An Observations and Model-based Analysis of the Temporal Variability of the Brazil Current (87225)
Claudia Schmid1 and Sudip Majumder1,2, (1)NOAA/AOML, PHOD, Miami, FL, United States, (2)The Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, United States
 
Dissolved Oxygen Anomalies as Proxy for Variations in Ocean Circulation (92615)
Sunke Schmidtko, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
 
Intense Mixing and Recirculations of Intermediate and Deep Water in the Northwest Argentine Basin (90246)
Daniel Valla, Consejo Nacional de Investigaciones Científicas y Técnicas / SHN, Argentina, Argentina and Alberto R Piola, Servicio de Hidrografía Nava, Buenos Aires, Argentina
 
On How the Seasonal Variability of the ITCZ Drives Subtropical-Tropical Exchange in the Atlantic Ocean (88378)
Josep L Pelegrí1, Paola Castellanos2, Mikhail V Emelianov1, Marc Gasser1, Jerome Gourrion3, Jesús Peña-Izquierdo1 and Miquel Rosell-Fieschi1, (1)Institute of Marine Sciences, CSIC, Barcelona, (2)Instituto Oceanografico, Universidade de São Paulo, Dept. of Physical, Chemical and Geological Oceanography, São Paulo, Brazil, (3)CNRS, Brest, France
 
In Situ Observations of the Brazil-Malvinas Confluence in March 2015 (88615)
Mikhail V Emelianov1, Josep L Pelegrí1, Jordi Isern-Fontanet1, Dorleta Orue1, Sergio Ramirez1, Joaquin Salvador1, Martin Saraceno2 and Daniel Valla3, (1)Institute of Marine Sciences, CSIC, Physical Oceanography, Barcelona, Spain, (2)Centro de Investigaciones del Mar y la Atmósfera (CIMA)/CONICET-UBA, UMI-IFAECI/CNRS, Buenos Aires, Argentina, (3)Consejo Nacional de Investigaciones Científicas y Técnicas / SHN, Argentina, Argentina
 
Seasonal and Interannual Variability of the Brazil - Malvinas Front: an Altimetry Perspective (88849)
Martin Saraceno, Consejo Nacional de Investigaciones Científicas y Técnicas / UBA, CIMA, Buenos Aires, Argentina, Daniel Valla, Consejo Nacional de Investigaciones Científicas y Técnicas / SHN, Argentina, Argentina, Josep L Pelegrí, Inst Ciencies del Mar, Barcelona, Spain and Alberto R Piola, Servicio de Hidrografía Nava, Buenos Aires, Argentina