FN Archimer Export Format PT J TI Atlantic Meridional Overturning Circulation: Observed Transport and Variability BT AF Frajka-Williams, Eleanor Ansorge, Isabelle J. Baehr, Johanna Bryden, Harry L. Chidichimo, Maria Paz Cunningham, Stuart A. Danabasoglu, Gokhan Dong, Shenfu Donohue, Kathleen A. Elipot, Shane Heimbach, Patrick Holliday, N. Penny Hummels, Rebecca Jackson, Laura C. Karstensen, Johannes Lankhorst, Matthias Le Bras, Isabela A. Lozier, M. Susan McDonagh, Elaine L. Meinen, Christopher S. Mercier, Herle Moat, Bengamin I. Perez, Renellys C Piecuch, Christopher G. Rhein, Monika Srokosz, Meric A. Trenberth, Kevin E. Bacon, Sheldon Forget, Gael Goni, Gustavo Kieke, Dagmar Koelling, Jannes Lamont, Tarron McCarthy, Gerard D. Mertens, Christian Send, Uwe Smeed, David A. Speich, Sabrina van den Berg, Marcel Volkov, Denis Wilson, Chris AS 1:1;2:2;3:3;4:4;5:5;6:6;7:7;8:8;9:9;10:10;11:11;12:1;13:12;14:13;15:12;16:14;17:14;18:15;19:1;20:8;21:16;22:1;23:8;24:17;25:18;26:1;27:7;28:1;29:19;30:8;31:18;32:14;33:2,20;34:21;35:18;36:14;37:1;38:22;39:20;40:8;41:23; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;17:;18:;19:;20:;21:;22:;23:;24:;25:;26:;27:;28:;29:;30:;31:;32:;33:;34:;35:;36:;37:;38:;39:;40:;41:; C1 National Oceanography Centre, Southampton, United Kingdom Department of Oceanography, University of Cape Town, Cape Town, South Africa Institute of Oceanography, CEN, Universitat Hamburg, Hamburg, Germany University of Southampton, Southampton, United Kingdom Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Servicio de Hidrografía Naval and UMI-IFAECI/CNRS, Buenos Aires, Argentina Scottish Association for Marine Science, Oban, Scotland National Center for Atmospheric Research, Boulder, CO, United States Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States University of Rhode Island, Narragansett, RI, United States Rosenstiel School of Marine and Atmospheric Science, University of Miami, Coral Gables, FL, United States Jackson School of Geosciences, Oden Institute for Computational Engineering and Sciences, The University of Texas at Austin, Austin, TX, United States GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany Met Office Hadley Centre, Exeter, United Kingdom Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States Nicholas School of the Environment, Duke University, Durham, NC, United States Laboratoire d'Oceanographie Physique et Spatiale, CNRS, Plouzané, France Woods Hole Oceanographic Institution, Woods Hole, MA, United States Center for Marine Environmental Sciences MARUM, Institute for Environmental Physics IUP, Bremen University, Bremen, Germany Massachusetts Institute of Technology, Cambridge, MA, United States Department of Environmental Affairs, Cape Town, South Africa ICARUS, Department of Geography, Maynooth University, Maynooth, Ireland Laboratoire de Meteorologie Dynamique, UMR 8539 Ecole Polytechnique, ENS, CNRS, Paris, France National Oceanography Centre, Liverpool, United Kingdom C2 NOC, UK UNIV CAPE TOWN, SOUTH AFRICA UNIV HAMBURG, GERMANY UNIV SOUTHAMPTON, UK CONICET, ARGENTINA SAMS SCOTLAND, UK NCAR NATL CTR ATMOSPHER RES, USA NOAA, USA UNIV RHODE ISLAND, USA UNIV MIAMI, USA UNIV TEXAS AUSTIN, USA IFM GEOMAR, GERMANY MET OFFICE, UK UNIV CALIF SAN DIEGO, USA UNIV DUKE, USA CNRS, FRANCE WHOI, USA UNIV BREMEN MARUM, GERMANY MIT, USA DEPART ENVIRONM AFFAIRS, SOUTH AFRICA ICARUS, IRELAND ENS, FRANCE NOC, UK UM LOPS IN WOS Cotutelle UMR DOAJ copubli-france copubli-europe copubli-int-hors-europe copubli-sud IF 5.247 TC 119 UR https://archimer.ifremer.fr/doc/00503/61507/65342.pdf https://archimer.ifremer.fr/doc/00503/61507/65343.pdf LA English DT Article CR OVIDE DE ;meridional overturning circulation;thermohaline circulation;observing systems;ocean heat transport;carbon storage;moorings;circulation variability AB The Atlantic Meridional Overturning Circulation (AMOC) extends from the Southern Ocean to the northern North Atlantic, transporting heat northwards throughout the South and North Atlantic, and sinking carbon and nutrients into the deep ocean. Climate models indicate that changes to the AMOC both herald and drive climate shifts. Intensive trans-basin AMOC observational systems have been put in place to continuously monitor meridional volume transport variability, and in some cases, heat, freshwater and carbon transport. These observational programs have been used to diagnose the magnitude and origins of transport variability, and to investigate impacts of variability on essential climate variables such as sea surface temperature, ocean heat content and coastal sea level. AMOC observing approaches vary between the different systems, ranging from trans-basin arrays (OSNAP, RAPID 26°N, 11°S, SAMBA 34.5°S) to arrays concentrating on western boundaries (e.g., RAPID WAVE, MOVE 16°N). In this paper, we outline the different approaches (aims, strengths and limitations) and summarize the key results to date. We also discuss alternate approaches for capturing AMOC variability including direct estimates (e.g., using sea level, bottom pressure, and hydrography from autonomous profiling floats), indirect estimates applying budgetary approaches, state estimates or ocean reanalyses, and proxies. Based on the existing observations and their results, and the potential of new observational and formal synthesis approaches, we make suggestions as to how to evaluate a comprehensive, future-proof observational network of the AMOC to deepen our understanding of the AMOC and its role in global climate. PY 2019 PD JUL SO Frontiers In Marine Science SN 2296-7745 PU Frontiers Media SA VL 6 IS 260 UT 000470790900001 DI 10.3389/fmars.2019.00260 ID 61507 ER EF