US Climate Variability and Predictability Program

2017 US AMOC Science Team Meeting Agenda

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Tuesday, May 23, 2017
Time Agenda Presenter Presentation


08:30 Welcome, logistics, goals Wilbert Weijer, LANL, & Gokhan Danabasoglu, NCAR  Download

Session 1: Observing Systems Implementation and Evaluation
Chair: Femke de Jong

09:00 The role of a changing Gulf Stream in driving enhanced exchange between the Deep Western Boundary Current and the interior Magdalena Andres, WHOI Download
09:15 The Norröna Project: An international collaboration for sustained studies of the meridional overturning circulation between Denmark, the Faroes, and Iceland Thomas Rossby, U. Rhode Island Download
09:30 Overflow water pathways in the subpolar North Atlantic observed with deep floats Amy Bower, WHOI Download
09:45 Updates to evaluating Atlantic overturning variability and coherence with GRACE ocean bottom pressure Felix Landerer, JPL/Caltech  
10:00 Variability of the Boundary Circulation Systems at 11°S Rebecca Hummels, GEOMAR Download
10:15 New considerations on the overturning in the Iceland Sea Robert Pickart, WHOI Download

Poster Session 1/2

12:00 Session 1 Discussion    



Session 2: AMOC State, Variability, and Change
Chair: Matthias Lankhorst

14:00 Lost in transition: the AMOC at the intersection of the North Atlantic subpolar and subtropical gyres Susan Lozier, Duke U.  
14:15 Labrador Sea Water property changes along the path of the Deep Western Boundary Current Isabela Le Bras, WHOI Download
14:30 Recent subpolar Atlantic climate shift due to wind forcing of midlatitude gyre circulation Christopher Piecuch, Atmospheric and Environmental Research Download
14:45 Dynamical reconstruction of AMOC variability at the mouth of the South Atlantic Timothy Smith, U. Texas-Austin Download
15:00 Linked variations between the Gulf Stream, AMOC, and heat content LuAnne Thompson, U. Washington Download
15:15 AMOC variability at 16N in comparison with higher latitudes Matthias Lankhorst, Scripps  

Poster Session 1/2

17:00 Session 2 Discussion    



Special Science Session and Dinner: Climate variability and human-environment interactions in the US Southwest
Dinner buffet commences at 6:30

18:55 Introduction Wilbert Weijer, LANL   
19:00 Coupled warming and megadroughts in New Mexico during the mid-Pleistocene: The Valles Caldera Record Peter Fawcett, U. New Mexico Download
19:30 Human-environment relationships in New Mexico: A retrospective of the last 1000 years Emily Lena Jones, U. New Mexico Download
Wednesday, May 24, 2017
Time Agenda Presenter Presentation

Session 3: AMOC Mechanisms and Predictability
Chair: Wilbert Weijer

08:30 Interannual heat transport variability and its links to surface temperature predictability in the North Atlantic Leonard Borchert, U. Hamburg Download
08:45 Is Arctic climate change driving the slow-down of the Atlantic meridional overturning circulation? Alexey Fedorov, Yale U. Download
09:00 Remote influence of Interdecadal Pacific Oscillation on the South Atlantic Meridional Overturning Circulation variability. Hosmay Lopez, NOAA AOML Download
09:15 The role of sea ice and buoyancy fluxes in shaping glacial and modern overturning circulation Alice Marzocchi, U. Chicago Download
09:30 A multi-model comparison of the ocean contributions to multidecadal variability in the North Atlantic Pablo Ortega, U. Reading Download
09:45 North Atlantic Circulation in three Atlantic simulations of 1/12°, 1/25°, and 1/50° Xiaobiao Xu, Florida State U. Download

Poster Session 3/4

11:30 Session 3 Discussion    



Session 4: AMOC, Ocean Heat Transport and Uptake, and Climate
Chair: Rong Zhang

13:45 Predictability of North Atlantic ocean heat content Martha Buckley, George Mason U. Download
14:00 Seasonal variability in warm-water inflow towards Kangerlugssuaq Fjord Renske Gelderloos, Johns Hopkins U. Download
14:15 Variability in AMOC strength modifies the Northern Hemisphere surface temperature response in the CESM Large Ensemble Elizabeth Maroon, CIRES Download
14:30 On the coupling between the meridional overturning circulation, alongshore wind stress, and United States coastal sea level Chris Little, Atmospheric and Environmental Research Download
14:45 Oxygen fingerprints of variability in the Atlantic Meridional Overturning Circulation Amy Chi, Johns Hopkins U. Download
15:00 Biological variability in the North Atlantic and the Atlantic Multidecadal Oscillation Anand Gnanadesikan, Johns Hopkins U. Download

Poster Session 3/4

16:45 Session 4 Discussion    
17:30 Review/Synthesis Paper Discussion Gokhan Danabasoglu, NCAR  Download


Thursday, May 25, 2017
Time Agenda Presenter Presentation

Special Science Session 1: Atlantic Multidecadal Variability

08:30 Introduction Gokhan Danabasoglu, NCAR  Download
08:35 Atlantic multidecadal variability without a role for ocean circulation Amy Clement, U. Miami Download
08:50 Relationships between external forcing, AMO, subsurface temperature and AMOC in the CESM Large Ensemble Katinka Bellomo, Columbia U. Download
09:05 Low-frequency variability in the North Atlantic-Arctic sector Rong Zhang, NOAA GFDL Download
09:20 Low-frequency North Atlantic climate variability in the Community Earth System Model Large Ensemble simulations Who Kim, NCAR Download
09:35 Discussion    



Special Science Session 2: AMOC Stability Metrics

10:30 Introduction Wilbert Weijer, LANL  Download
10:35 Overlooked possibility of a collapsed Atlantic meridional overturning circulation in warming climate Wei Liu, Yale U. Download
10:50 AMOC hysteresis in a state-of-the-art GCM Laura Jackson, Met Office Hadley Centre Download
11:05 Influence of the freshwater forcing pathway on the AMOC during 8.2k event in a high resolution coupled model Aixue Hu, NCAR Download
11:20 Quantifying salt-advection feedback in GFDL and CESM pre-industrial control simulations Wei Cheng, U. Washington Download
11:35 Discussion    



Breakout Groups: Discussion of near-term priorities and long-term goals for all Task Teams




Task Team reports from breakout groups and plenary discussion

15:20 TT1 Breakout Summary   Download
15:35 TT2 Breakout Summary   Download
15:50 TT3 Breakout Summary   Download
16:05 TT4 Breakout Summary   Download
16:20 Group Discussion    

Meeting Adjourns


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Poster Presentations

Poster Title Author Affiliation Presentation
Variability in Circulation and Hydrography in the Denmark Strait Mattia Almansi Johns Hopkins University Download
Annual to multidecadal coherence of Atlantic meridional heat transport in last-millennium CMIP5 simulations and the Last Millennium Reanalysis Dan Amrhein University of Washington Download
South Atlantic Meridional Overturning Circulation: Real-time Monitoring Shenfu Dong NOAA/AOML Download
Monitoring the strength and variability of the MOC Kathleen Donohue University of Rhode Island Download
Vertical Wavenumber Spectra of Western North Atlantic Eddies: Energy and Enstrophy Cascades in Geostrophic Turbulence Charles Eriksen University of Washington Download
Estimating overturning changes from tracers in the North Atlantic Anand Gnanadesikan Johns Hopkins University Download
The role of African dust on AMOC during Heinrich events Marlos Goes NOAA/AOML and U.Miami/CIMAS Download
Interannual variability of the Brazil Current assessed using observations and model simulations Marlos Goes U. Miami/CIMAS and NOAA/AOML Download
Revisiting the oceanography of the southern end of the overturning: Transient and standing eddy heat transports across an idealized Southern Ocean Matthew Hecht Los Alamos Download
Seasonal overturning of the Labrador Sea as observed by Argo floats Jamie Holte WHOI Download
Understanding the Centennial O2 Changes in the North Atlantic Ocean simulated by the CMIP5 Earth System Models Taka Ito Georgia Institute of Technology Download
Successful AMOC reconstruction from a new high-resolution reanalysis Laura Jackson Met Office Download
Diabatic processes controlling the growth of long baroclinic oceanic waves Quentin Jamet Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, US Download
Relationship between Air-Sea Density Flux and Isopycnal Meridional Overturning Circulation Igor Kamenkovich RSMAS, University of Miami Download
Southward NADW transport and property changes at 16N Jannes Koelling Scripps Institution of Oceanography Download
Interaction between the Gulf Stream Northern Recirculation Gyre and the Deep Western Boundary Current -- A Model Study Isabela Le Bras Woods Hole Oceanographic Institution Download
Southward Pathways of the Upper and Lower North Atlantic Deep Water and their Impact on Atlantic Meridional Heat Transport Sang-Ki Lee NOAA Atlantic Oceanographic and Meteorological Laboratory Download
A reconstructed South Atlantic Meridional Overturning Circulation time series since 1870 Hosmay Lopez NOAA/AOML Download
Investigating Variations in Deep SAMOC Properties: First Steps Alison Macdonald Woods Hole Oceanographic Institution Download
A Study of the Variability of the Benguela Current Sudip Majumder Cooperative Institute for Marine and Atmospheric Studies (CIMAS), University of Miami Download
Testing the robustness of observed AMOC fingerprints in a perfect model framework Pablo Ortega NCAS-Climate, University of Reading Download
The AMOC in the Accelerated Climate Model for Energy (ACME) Mark Petersen Los Alamos National Laboratory Download
Large Eddy Simulation of Heat Entrainment under Arctic Sea Ice Eshwan Ramudu Johns Hopkins University Download
Characteristics and causes of Deep Western Boundary Current transport variability at 34.5°S during 2009-2014 Perez Renellys UM/CIMAS, NOAA/AOML Download
Katabatic wind-driven exchange in fjords Michael Spall WHOI Download
Internal Baroclinic Motion along 26°N in the Atlantic: do Rossby Waves reflect off of the western boundary? Zoltan Szuts Applied Physics Lab, UW Download
Using lagged covariances to assimilate RAPID data Chris Thomas Department of Meteorology, University of Reading Download
Moored Observations of the Deep Western Boundary Current in the NW Atlantic: 2004-2014 John Toole Woods Hole Oceanographic Institution Download
Low Frequency Intrinsic and Forced Variability in the Eddying Ocean Nicolas Wienders Florida State University Download
Skillful Decadal Climate Prediction in the Atlantic Sector using CESM Stephen Yeager NCAR Download