PL14A:
Advances in Understanding of the Meridional Overturning Circulation in the South Atlantic Ocean: Variability, Mechanisms, and Impacts I Posters

Session ID#: 84552

Session Description:
The Meridional Overturning Circulation (MOC) is a key component of the climate system, playing an important role in redistributing heat and freshwater around the globe. Over the past two decades, the Atlantic MOC observing system has revealed new features about the spatial and temporal variability of the MOC. Together with advances in ocean numerical modeling, these research efforts have shown that MOC variability is strongly correlated with changes in coastal sea level, weather, and climate. The South Atlantic Ocean is an area of particular importance for the MOC, as it is unique in its role as a nexus for water-masses formed elsewhere and transiting between the far regions of the World Ocean. The modifications of these water masses in the South Atlantic can lead to changes of the MOC strength and variability, and thus to meridional heat and freshwater transport changes. In this session, we encourage the submission of abstracts on recent results from observing systems and numerical models in advancing our understanding of the South Atlantic MOC (SAMOC), as well as its variability and impact on weather and climate. Abstracts linking SAMOC with marine ecosystem and biogeochemical cycles are also welcome. We encourage abstract submissions on design studies for the future evolution of the SAMOC observing system as well.
Co-Sponsor(s):
  • AI - Air-Sea Interactions
  • OM - Ocean Modeling
  • PS - Physical Oceanography: Mesoscale and Smaller
Index Terms:

4512 Currents [OCEANOGRAPHY: PHYSICAL]
4532 General circulation [OCEANOGRAPHY: PHYSICAL]
4553 Overflows [OCEANOGRAPHY: PHYSICAL]
4576 Western boundary currents [OCEANOGRAPHY: PHYSICAL]
Primary Chair:  Shenfu Dong, Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States
Co-chairs:  Marion Kersalé, CIMAS/University of Miami, Miami, FL, United States; Atlantic Oceanographic and Meteorological Laboratory, PhOD, Miami, FL, United States, Olga T Sato, Oceanographic Institute of the University of Sao Paulo IOUSP, Sao Paulo, Brazil and Daniel Valla, Consejo Nacional de Investigaciones Científicas y Técnicas / SHN, Argentina, Argentina
Primary Liaison:  Shenfu Dong, AOML/NOAA, Miami, FL, United States
Moderators:  Marion Kersalé, CIMAS/University of Miami, Miami, FL, United States and Olga T Sato, Oceanographic Institute of the University of Sao Paulo IOUSP, Sao Paulo, Brazil
Student Paper Review Liaison:  Olga T Sato, Oceanographic Institute of the University of Sao Paulo IOUSP, Sao Paulo, Brazil

Abstracts Submitted to this Session:

 
On the Interannual Variations of the Chlorophyll-a Concentration in the South Atlantic driven by the MOC (651342)
Lucas Carnier Casaroli, USP University of Sao Paulo, Oceanographic Institute, São Paulo, Brazil and Olga T Sato, Oceanographic Institute of the University of Sao Paulo IOUSP, Sao Paulo, Brazil
 
Interannual variability of chemical parameters at the western end of a South Atlantic Ocean section (34.5°S) (654569)
Ana Beatriz Leite Cavalcante1, Vitor Gonsalez Chiozzini2, Henrique José Rodrigues Dias2, Edmo Jose Dias Campos2 and Elisabete de Santis Braga3, (1)University of Sao Paulo, Oceanographic Institute, Sao Paulo, United States, (2)University of Sao Paulo, Oceanographic Institute, Sao Paulo, Brazil, (3)University of Sao Paulo, Oceanographic Institute, São Paulo, Brazil
 
Baroclinic Rossby Waves and the South Atlantic Meridional Overturning Circulation (637133)
Mariana Miracca Lage, Universidade de São Paulo, Instituto Oceanográfico, São Paulo, Brazil and Paulo S Polito, Univ Sao Paulo, Sao Paulo, Brazil
 
On the Role of Southern Ocean Mesoscale Dynamics on the Circulation and Meridional Overturning in the South Atlantic (645518)
Franziska U Schwarzkopf, Jan Harlass and Arne Biastoch, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
 
Volume Transport Variability of the Atlantic Meridional Overturning Cells at 34.5°S (643498)
Marion Kersalé1,2, Renellys C Perez3, Christopher S Meinen4, Matthieu Le Henaff1,5, Daniel Valla6, Tarron Lamont7, Olga T Sato8, Sabrina Speich9, Alberto R Piola10, Isabelle Jane Ansorge11, Maria Paz Chidichimo12 and Edmo J Campos13, (1)CIMAS/University of Miami, Miami, FL, United States, (2)Atlantic Oceanographic and Meteorological Laboratory, PhOD, Miami, FL, United States, (3)NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, United States, (4)Atlantic Oceanographic and Meteorological Laboratory, Physical Oceanography Division, Miami, FL, United States, (5)NOAA/AOML, Miami, FL, United States, (6)Consejo Nacional de Investigaciones Científicas y Técnicas / SHN, Argentina, Argentina, (7)Department of Environmental Affairs, Oceans & Coasts Research Branch, Cape Town 8012, South Africa, (8)Oceanographic Institute of the University of Sao Paulo IOUSP, Sao Paulo, Brazil, (9)Ecole Normale Supérieure Paris, Laboratoire de Météorologie Dynamique, Paris, France, (10)Argentine Hydrographic Service, Buenos Aires, Argentina, (11)university of Cape Town, Department of Oceanography, Cape Town, South Africa, (12)National Scientific and Technical Research Council (CONICET) / SHN, Buenos Aires, Argentina, (13)USP University of Sao Paulo, São Paulo, Brazil
 
Variability of the Deep Western and Eastern Boundary Currents and their relationship to the Meridional Overturning Circulation at 34.5°S (639812)
Christopher S Meinen1, Marion Kersalé2, Daniel Valla3, Tarron Lamont4, Olga T Sato5, Renellys C Perez6, Matthieu Le Henaff2, Shenfu Dong7, Thierry Terre8, Maria Paz Chidichimo9, Marcel Van den Berg10, Sabrina Speich11, Alberto R Piola12, Edmo J Campos13 and Isabelle Jane Ansorge14, (1)Atlantic Oceanographic and Meteorological Laboratory, Physical Oceanography Division, Miami, FL, United States, (2)CIMAS/University of Miami, Miami, FL, United States, (3)Consejo Nacional de Investigaciones Científicas y Técnicas / SHN, Argentina, Argentina, (4)Department of Environmental Affairs, Oceans & Coasts Research Branch, Cape Town 8012, South Africa, (5)Oceanographic Institute of the University of Sao Paulo IOUSP, Sao Paulo, Brazil, (6)NOAA Miami, Miami, FL, United States, (7)AOML/NOAA, Miami, FL, United States, (8)Ifremer, Laboratoire de Physique des Océans, Plouzané, France, (9)National Scientific and Technical Research Council (CONICET) / SHN, Buenos Aires, Argentina, (10)Department of Environmental Affairs, Oceans & Coasts Research Branch, Cape Town, South Africa, (11)Ecole Normale Supérieure Paris, Laboratoire de Météorologie Dynamique, Paris, France, (12)Argentine Hydrographic Service, Buenos Aires, Argentina, (13)USP University of Sao Paulo, São Paulo, Brazil, (14)university of Cape Town, Department of Oceanography, Cape Town, South Africa
 
Variability of the Bottom Flow as Measured by Currentmeters in the SAMOC Basin-wide Array (650006)
Edmo J Campos, USP University of Sao Paulo, São Paulo, Brazil; College of Arts and Science of the American University of Sharjah, Biology, Chemistry and Environmental Sciences, Sharjah, United Arab Emirates, Olga T Sato, Oceanographic Institute of the University of Sao Paulo IOUSP, Sao Paulo, Brazil, Mathias van Caspel, University of São Paulo, São Paulo, Christopher S Meinen, Atlantic Oceanographic and Meteorological Laboratory, Physical Oceanography Division, Miami, FL, United States and Alberto R Piola, Argentine Hydrographic Service, Buenos Aires, Argentina
 
Pacific/Circumpolar and North Atlantic Deep Waters in the Argentine Basin: Lateral Stirring within the AMOC (644646)
Sawyer V.S. Brand1, Lynne D Talley2, Matthew R Mazloff2, Channing Prend3, Isabella Rosso2 and Paul Chamberlain1, (1)University of California San Diego, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States, (3)Columbia University of New York, Palisades, NY, United States
 
Rising Temperatures, Falling Isopycnals and Decreasing AOU: The Story of Abyssal Property Change at 24°S in the Atlantic (2009-2018) (636168)
Ashley Arroyo, University of Massachusetts, Amherst, Amherst, MA, United States, Alison M Macdonald, WHOI, Woods Hole, United States and Sachiko Yoshida, WHOI, Woods Hole, MA, United States
 
Temporal Evolution and Spatial Transformation of Subsurface South Atlantic Overturning Waters between 30°S and 24°S (650774)
Alison M Macdonald, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, United States, Sachiko Yoshida, WHOI, Woods Hole, MA, United States, Ashley Arroyo, University of Massachusetts, Amherst, Amherst, MA, United States, Molly O'Neil Baringer, NOAA/AOML, Miami, FL, United States, Xujing Jia Davis, Woods Hole Oceanographic Insti, Woods Hole, MA, United States and Elaine McDonagh, National Oceanography Centre, Southampton, United Kingdom
 
Interannual South Atlantic Ocean Heat Content Variability in an Eddy-Resolving Coupled Climate Model (646291)
Alexandra Gronholz1,2, Hosmay Lopez3, Shenfu Dong4, Gustavo Jorge Goni5 and Molly O'Neil Baringer5, (1)Max Planck Institute for Meteorology, The Ocean in the Earth System, Hamburg, Germany, (2)Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, United States, (3)UM-CIMAS/NOAA-AOML, Miami, FL, United States, (4)AOML/NOAA, Miami, FL, United States, (5)NOAA/AOML, Miami, FL, United States
 
What Caused the Large-scale Heat Deficit in the South Atlantic Ocean during 2009-2012? (651305)
Shenfu Dong1, Hosmay Lopez2, Sang-Ki Lee3, Christopher S Meinen4, Gustavo Jorge Goni5 and Molly O'Neil Baringer5, (1)NOAA Key Biscayne, Key Biscayne, FL, United States, (2)UM-CIMAS/NOAA-AOML, Miami, FL, United States, (3)University of Miami, Cooperative Institute for Marine and Atmospheric Studies, Miami, FL, United States, (4)Atlantic Oceanographic and Meteorological Laboratory, Physical Oceanography Division, Miami, FL, United States, (5)NOAA/AOML, Miami, FL, United States
 
Heat and freshwater Fluxes in the Atlantic Ocean at 30S in 1993, 2003 and 2011 (642985)
Alonso Hernandez-Guerra, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain and Lynne D Talley, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States
 
Atmospheric Origins of Variability in the South Atlantic Meridional Overturning Circulation (643444)
Timothy Smith and Patrick Heimbach, University of Texas at Austin, Oden Institute for Computational Engineering and Sciences, Austin, TX, United States
 
Early-Holocene South Atlantic thermal structure and the control of South American Monsoons. (645981)
Wilton Aguiar Carvalho Silva Filho, Universidade Federal do Rio Grande, Rio Grande-RS, Brazil, Luciana Prado, University of Brasilia, Institute of Geosciences, Brasilia, Brazil, Ilana C Wainer, Univ of Sao Paulo, Sao Paulo, Brazil, Zhengyu Liu, The Ohio State University, Department of Geography, Columbus, United States and Mauricio M Mata, Federal University of Rio Grande, Instituto de Oceanografia, Rio Grande, Brazil