Organization

Task Team 2: AMOC State, Variability, and Change

The team is charged with assessing the current state and past variability of the AMOC using existing observations, data assimilation models, and proxy data. 

View TT2 Near- and Long-Term Priorities

 

US AMOC Task Team 2 Members
Matthias Lankhorst, chair Scripps Institution of Oceanography
Zoltan Szuts University of Washington
Molly Baringer NOAA Atlantic Oceanographic and Meteorological Laboratory
Amy Bower Woods Hole Oceanographic Institution
James Carton University of Maryland
Gustavo Goni NOAA Atlantic Oceanographic and Meteorological Laboratory
James Holte Woods Hole Oceanographic Institution
Alicia Karspeck National Center for Atmospheric Research
Kathryn Kelly University of Washington
Susan Lozier Duke University
Sudip Majumder NOAA Atlantic Oceanographic and Meteorological Laboratory
Renellys Perez University of Miami/NOAA Atlantic Oceanographic and Meteorological Laboratory
Peter Rhines University of Washington
Irina Rypina Woods Hole Oceanographic Institution
Claudia Schmid NOAA Atlantic Oceanographic and Meteorological Laboratory
Michael Spall Woods Hole Oceanographic Institution
Fiamma Straneo Woods Hole Oceanographic Institution
Luanne Thompson University of Washington
Xiao-Hai Yan University of Delaware
Rong Zhang NOAA Geophysical Fluid Dynamics Laboratory

 

Near-term priorities

  • Use new and existing observations in combination with modeling experiments to refine our understanding of the present and historical circulation (and related transports of heat and freshwater) in the North and South Atlantic. An emerging priority is to provide a more detailed characterization of AMOC flow pathways and their impact on variability.
  • Continue development and investigation of AMOC “fingerprints.” Modeling and observational studies that seek to refine our current understanding of the connection of AMOC to large-scale, historically well-observed properties of the climate system should be encouraged.  
  • Investigate connections between surface forcing (e.g., freshwater, heat, and momentum fluxes, NAO-related forcing) and historical AMOC variability.
  • Develop a more comprehensive understanding of the strengths and weaknesses of existing global ocean reanalysis products and hindcasts using forward models as tools for investigating the circulation and transports in the Atlantic. 

Long-term priority

  • Synthesize modeling and observational evidence to build scientific consensus on the variability and change of the AMOC over the last 50 years. Efforts within the data assimilation community should focus on reaching an accurate consensus (consistent with other lines of observational evidence) on the evolution of the AMOC over the last 50 years.
  • Efforts within the data assimilation community should focus on reaching an accurate consensus (consistent with other lines of observational evidence) on the evolution of the AMOC over the last 50 years.
  • Observational studies should focus on mechanisms and pathways that identify and explain coherent and incoherent signals between different study sites, thereby reaching consensus on which signals represent the large-scale AMOC versus more localized circulation patterns.