PC24A:
Atlantic Meridional Overturning Circulation: An Ongoing Challenge III Posters

Session ID#: 84627

Session Description:
Due to the importance of the Atlantic meridional overturning circulation (AMOC) in the transport and storage of heat, freshwater, carbon, and nutrients, it is crucial to observe and model the AMOC. A coordinated contribution to recent AMOC research has been through programs such as USAMOC, RAPID and OSNAP, as well as other international projects and transport arrays. Consequently, significant progress has been made in understanding the AMOC’s role in the climate system through its interactions with the atmosphere on seasonal to multi-decadal time scales. Nevertheless, challenges remain with many unresolved questions, including: spatial coherency of AMOC and associated time scales; and robust driving mechanisms of AMOC variability. Better syntheses of observations, paleo proxies, and models are required to examine AMOC over longer time scales, and to address how knowledge of the AMOC could enhance climate predictions. Improved integration of physical and biogeochemical observations is needed to understand the role of AMOC in carbon and nutrient budgets. We invite contributions from observational (instrumental or proxy) and modelling studies of the AMOC and its impacts on climate on all time scales. The sunsetting of the USAMOC program provides a great opportunity to synthesize the knowledge gained so far.
Co-Sponsor(s):
  • OM - Ocean Modeling
  • PS - Physical Oceanography: Mesoscale and Smaller
Index Terms:
Primary Chair:  Meric A Srokosz, National Oceanography Centre, Southampton, United Kingdom
Co-chairs:  Gokhan Danabasoglu, National Center for Atmospheric Research, Boulder, CO, United States, Kathleen A Donohue, Univ Rhode Island, Narragansett, RI, United States and Femke de Jong, Royal Netherlands Institute for Sea Research & Utrecht University, Ocean Science Systems, Texel, Netherlands
Primary Liaison:  Meric A Srokosz, National Oceanography Centre, Southampton, United Kingdom
Moderators:  Meric A Srokosz, National Oceanography Centre, Southampton, United Kingdom and Femke de Jong, Royal Netherlands Institute for Sea Research, Texel, Netherlands
Student Paper Review Liaison:  Kathleen A Donohue, Univ Rhode Island, Narragansett, RI, United States

Abstracts Submitted to this Session:

 
A joint Analysis of the Atlantic Meridional Overturning Circulation at 26.5oN using two Observations-based Time Series (651773)
Claudia Schmid, NOAA/AOML, Miami, United States, Marlos P Goes, Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, United States and David Smeed, National Oceanography Center, Soton, Southampton, United Kingdom
 
Along-stream and temporal variability in the boundary currents east and west of Cape Farewell, Greenland (646945)
Kathleen A Donohue, University of Rhode Island, Narragansett, RI, United States, Emma Thomas, University of Rhode Island, Narragansett, United States and H. Thomas Rossby, Univ Rhode Island, Narragansett, RI, United States
 
Control of Bering Strait transport by the meridional overturning circulation (640551)
Paola Cessi, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
 
Decadal variability in North Atlantic Deep Water transport measured by GRACE satellites and MOVE moorings (653927)
Jannes Koelling1, Matthias J Lankhorst2 and Uwe Send1, (1)Scripps Institution of Oceanography, La Jolla, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States
 
Determining nonlinear thermohaline precursors of the 2009 AMOC slow-down in an eddy permitting model (642031)
Dafydd Stephenson, National Center for Atmospheric Research, Ocean and Earth Science, Boulder, CO, United States, Florian Sevellec, Laboratoire d'Oceanographie Physique et Spatiale, IFREMER, Brest, France and Simon Mueller, National Oceanography Center, Soton, Southampton, United Kingdom
 
Eddies effect on low frequency variability of the Atlantic Meridional Overturning Circulation. (646634)
Antoine Hochet1, Matthew R Mazloff2, Bruce D Cornuelle3, Thierry Huck1, Florian Sevellec4 and Olivier Arzel1, (1)Laboratoire d'Océanographie Physique et Spatiale, Brest, France, (2)Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States, (3)University of California San Diego, La Jolla, CA, United States, (4)Laboratoire d'Oceanographie Physique et Spatiale, IFREMER, Brest, France
 
Establishing a Timeline of Upper to Deep AMOC Connections in the North Atlantic Subpolar Gyre Through Observations of Dramatic Freshening in the Iceland Scotland Overflow Plume (642122)
Manish Devana, Rosenstiel School of Marine and Atmospheric Science, Ocean Sciences, Miami, FL, United States, William E Johns, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States and Adam Houk, Woods Hole Oceanographic Institution, Woods Hole, FL, United States
 
Influence of Meridional Overturning Circulation on Ocean Heat Storage Rate in an Idealised Climate Model (648190)
Peter Shatwell1,2, Arnaud Czaja1 and David Ferreira2, (1)Imperial College London, Physics, London, United Kingdom, (2)University of Reading, Department of Meteorology, Reading, United Kingdom
 
Insights into Decadal North Atlantic Sea Surface Temperature and Ocean Heat Content Variability from an Eddy-Permitting Coupled Climate Model (638961)
Ben I Moat1, Bablu Sinha1, Simon A Josey1, Jon Robson2, Pablo Ortega3, N. Penny Holliday1, Adrian New1, Gerard McCarthy4, Florian Sevellec5 and Joel Hirschi1, (1)National Oceanography Centre, Southampton, United Kingdom, (2)University of Reading, National Centre for Atmospheric Science, Reading, United Kingdom, (3)Barcelona Supercomputing Center, Earth Sciences, Barcelona, Spain, (4)National University of Ireland Maynooth, Kildare, Ireland, (5)Laboratoire d'Oceanographie Physique et Spatiale, IFREMER, Brest, France
 
Intermittency of the AMOC multi-decadal variability: Quantification and Mechanisms (647233)
Wei Cheng1, Wilbert Weijer2, John Chiang3, Gokhan Danabasoglu4, Stephen G Yeager4, Who M Kim4, Peter R Gent4, Jiaxu Zhang2 and Dongxiao Zhang5, (1)University of Washington/JISAO and NOAA/PMEL, Seattle, WA, United States, (2)Los Alamos National Laboratory, Los Alamos, NM, United States, (3)UC Berkeley, Geography, Berkeley, CA, United States, (4)National Center for Atmospheric Research, Boulder, CO, United States, (5)CICOES/University of Washington and NOAA/PMEL, Seattle, WA, United States
 
Investigating the Atlantic Meridional Overturning Circulation using boundary information (639626)
Tomas Jonathan1, Helen Johnson2, David Philip Marshall2 and Mike Bell3, (1)University of Oxford, Earth Sciences, Oxford, United Kingdom, (2)University of Oxford, Oxford, United Kingdom, (3)Met Office, Exeter, United Kingdom
 
Linking the South Atlantic Meridional Overturning Circulation and U.S. heat waves (652876)
Hosmay Lopez, UM-CIMAS/NOAA-AOML, Miami, FL, United States, Shenfu Dong, AOML/NOAA, Miami, FL, United States, Sang-Ki Lee, University of Miami, Cooperative Institute for Marine and Atmospheric Studies, Miami, FL, United States and Gustavo Jorge Goni, NOAA/AOML, Miami, FL, United States
 
Locally and remotely forced subtropical AMOC variability: A matter of time scales (639171)
Quentin Jamet1, William K Dewar2, Nico Wienders2 and Bruno Deremble3, (1)Institut des Géosciences de l'Environnement UMR 5001, Grenoble, France, (2)Florida State University, Tallahassee, FL, United States, (3)Laboratoire de Météorologie Dynamique ENS, Paris, France
 
On the Ability of Sea Surface Temperature Indices to Hindcast AMOC Variability (651445)
Mengnan Zhao and Christopher M Little, Atmospheric and Environmental Research Lexington, Lexington, MA, United States
 
On the structure and transport of the separated Gulf Stream (641700)
John Merrill Toole, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Magdalena Andres, WHOI, Woods Hole, MA, United States and Kathleen A Donohue, Univ Rhode Island, Narragansett, RI, United States
 
PATHWAYS OF THE WATER MASSES EXITING THE LABRADOR SEA: THE IMPORTANCE OF BOUNDARY-INTERIOR EXCHANGES (645675)
Sotiria Georgiou1, Stefanie Leonore Ypma2, Nils Brueggemann3, Juan Manuel Manuel Sayol4, Julie Pietrzak4 and Caroline A Katsman4, (1)Delft University of Technology, Geoscience and Remote Sensing, Delft, Netherlands, (2)Institute for Marine and Atmospheric Research Utrecht, Environmental Fluid Mechanics, Utrecht, Netherlands, (3)Universitaet Hamburg, Faculty of Mathematics, Informatics and Natural Sciences, Hamburg, Germany, (4)Delft University of Technology, Environmental Fluid Mechanics, Delft, Netherlands
 
Potential shifts in deep convection sites for the Atlantic Meridional Overturning Circulation (651120)
Sang-Ki Lee1, Dongmin Kim2, Rick Lumpkin3, Denis Volkov3, Molly O'Neil Baringer3, Christopher S Meinen4, Marlos P Goes5, Shenfu Dong6, Hosmay Lopez2 and Stephen G Yeager7, (1)Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States, (2)UM-CIMAS/NOAA-AOML, Miami, FL, United States, (3)NOAA/AOML, Miami, FL, United States, (4)Atlantic Oceanographic and Meteorological Laboratory, Physical Oceanography Division, Miami, FL, United States, (5)Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, United States, (6)AOML/NOAA, Miami, FL, United States, (7)NCAR, Oceanography, Boulder, CO, United States
 
Response of the Atlantic Meridional Overturning Circulation to Climate Change from a suite of Climate Models (643624)
Anne-Sophie Fortin, Georgia Tech Research Institute, Atlanta, United States, Carolina O. Dufour, McGill University, Department of Atmospheric and Oceanic Sciences, Montreal, QC, Canada, Timothy M Merlis, McGill University, Montreal, QC, Canada and Louis-Philippe Nadeau, University of Quebec at Rimouski UQAR, Rimouski, QC, Canada
 
Seasonal and Interannual Variability for the Atlantic Meridional Overturning Circulation in the Subpolar North Atlantic (651173)
Hanshi Wang, UMCES, Cambridge, MD, United States and Jian Zhao, University of Maryland Center for Environmental Science Horn Point Laboratory, Physical Oceanography, Cambridge, MD, United States
 
Sources of variability of the overturning circulation in the subtropical North Atlantic (651398)
David Smeed1, Eleanor Frajka-Williams1, William E Johns2, Molly O'Neil Baringer3, Ben I Moat1, Darren Rayner1, Denis Volkov4 and Harry L Bryden5, (1)National Oceanography Centre, Southampton, United Kingdom, (2)Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States, (3)NOAA/AOML, Miami, FL, United States, (4)Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, United States, (5)University of Southampton, United Kingdom
 
Spatial patterns of Atlantic Meridional Overturning Circulation variability (649488)
John C H Chiang, University of California Berkeley, Berkeley, CA, United States, Sol Kim, University of California, Berkeley, Berkeley, United States and Wei Cheng, Univ of Washington, Seattle, WA, United States
 
Sustainable Observations of the AMOC: Methodology and Technology (651629)
Gerard D McCarthy1, Charles N Flagg2, Loic Houpert3, Chris W. Hughes4, Mark Inall5, Kerstin Jochumsen6,7, Karin Margretha Husgard Larsen8, Christopher S Meinen9, Ben I Moat3, Monika Rhein10, Claudia Schmid11, Stuart A Cunningham5, Caroline Cusack12 and N. Penny Holliday3, (1)Maynooth University, ICARUS, Department of Geography, Maynooth, Ireland, (2)Stony Brook University, Stony Brook, NY, United States, (3)National Oceanography Centre, Southampton, United Kingdom, (4)University of Liverpool, School of Environmental Sciences, Liverpool, United Kingdom, (5)Scottish Association for Marine Science, Oban, United Kingdom, (6)University of Hamburg, Institute of Experimental Oceanography, Hamburg, Germany, (7)Federal Maritime and Hydrographic Agency (BSH), Hamburg, Germany, (8)Faroe Marine Research Institute, Tórshavn, Faroe Islands, (9)Atlantic Oceanographic and Meteorological Laboratory, Physical Oceanography Division, Miami, FL, United States, (10)Univ Bremen, FB1, Bremen, Germany, (11)NOAA/AOML, Miami, United States, (12)Marine Institute Ireland, Oranmore, Ireland
 
The development of a coupled data assimilation system using only surface pressure observations: potential for decadal climate prediction initialization (647380)
Xiaosong Yang1, Thomas L Delworth1, Fanrong Jenny Zeng1, William Cooke2 and Liping Zhang1, (1)NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, (2)Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
 
The Meridional Overturning Circulation in the Sub-Polar North Atlantic Ocean: a Model-Observation Comparison (656187)
Charlène Feucher and Paul G. Myers, University of Alberta, Department of Earth and Atmospheric Sciences, Edmonton, AB, Canada
 
The Sensitivity of Ocean Temperature, Heat Content, Sea-Level Rise, and Atlantic Meridional Overturning Circulation to Periodic and Constant Volcanic Forcing (650564)
Muhammad Mubashar Ahmad Dogar, Global Change Impact Studies Centre, Islamabad, Pakistan, Islamabad, Pakistan and Amina Shahid, Lahore College for Women University, Lahore, Pakistan
 
Transport variability of the Irminger Current: Results from four years of mooring deployment between 2014 – 2018 (638357)
Nora Fried, Royal Netherlands Institute for Sea Research & Utrecht University, Texel, Netherlands and Femke de Jong, Royal Netherlands Institute for Sea Research & Utrecht University, Ocean Science Systems, Texel, Netherlands
 
Unveiling North Atlantic Deep Water pathways using nonlinear dynamics techniques (649790)
Philippe Miron1, Francisco J Beron-Vera1, Maria Josefina Olascoaga1, Susan Lozier2, Péter Koltai3 and Luzie Helfmann3, (1)University of Miami, Miami, FL, United States, (2)Georgia Institute of Technology, Atlanta, United States, (3)Freie Universität Berlin, Department of Mathematics and Computer Science, Berlin, Germany
 
Weakening of the Florida Current during 1909-2018 (636716)
Christopher G Piecuch, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States
 
What can Hydrography Tell Us about the MOC on Centennial Timescales? (653568)
H. Thomas Rossby, University of Rhode Island, Narragansett, RI, United States
 
Where Do the Subpolar North Atlantic Near-Boundary Sinking Waters Go? A Lagrangian High-Resolution Model Approach (645736)
Juan Manuel Manuel Sayol1, Sotiria Georgiou2, Stefanie Leonore Ypma3, Nils Brueggemann4, Henk Dijkstra5 and Caroline A Katsman1, (1)Delft University of Technology, Environmental Fluid Mechanics, Delft, Netherlands, (2)Delft University of Technology, Geoscience and Remote Sensing, Delft, Netherlands, (3)Institute for Marine and Atmospheric Research Utrecht, Environmental Fluid Mechanics, Utrecht, Netherlands, (4)Universitaet Hamburg, Faculty of Mathematics, Informatics and Natural Sciences, Hamburg, Germany, (5)Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands
 
Wind sensitivity of the Atlantic meridional overturning circulation in an eddying and a non-eddying ocean (645680)
Veit Lüschow1, Jin-Song von Storch2 and Jochem Marotzke1, (1)Max Planck Institute for Meteorology, Hamburg, Germany, (2)Max Planck Institute for Meteorology, Ocean, Hamburg, Germany
 
Wind-driven Equatorial Oscillations in the Meridional Overturning Circulation (646710)
Adam Tobias Blaker1, Mike Bell2 and Joel Hirschi1, (1)National Oceanography Centre, Southampton, United Kingdom, (2)Met Office, Exeter, United Kingdom
 
Wind-Forced Variability of the Remote Meridional Overturning Circulation (638504)
Michael A Spall, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and David Nieves, Penn State University, State College, PA, United States