FN Archimer Export Format PT J TI Meridional Overturning Circulation Transport Variability at 34.5 degrees S During 2009-2017: Baroclinic and Barotropic Flows and the Dueling Influence of the Boundaries BT AF MEINEN, Christopher S. SPEICH, Sabrina PIOLA, Alberto R. ANSORGE, Isabelle CAMPOS, Edmo KERSALE, Marion TERRE TERRILLON, Thierry CHIDICHIMO, Maria Paz LAMONT, Tarron SATO, Olga T. PEREZ, Renellys C. VALLA, Daniel VAN DEN BERG, Marcel LE HENAFF, Matthieu DONG, Shenfu GARZOLI, Silvia L. AS 1:1;2:2;3:3,4,5;4:6,7;5:8,9;6:1,10;7:11;8:3,5;9:6,7,12;10:8;11:1;12:3,5;13:12;14:1,10;15:1;16:1,10; FF 1:;2:;3:;4:;5:;6:;7:PDG-ODE-LOPS;8:;9:;10:;11:;12:;13:;14:;15:;16:; C1 Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA. Ecole Normale Super, IPSL, Lab Meteorol Dynam, Paris, France. Serv Hidrog Naval, Buenos Aires, DF, Argentina. Univ Buenos Aires, Dept Ciencias Atmosfera & Oceanos, Buenos Aires, DF, Argentina. Consejo Nacl Invest Cient & Tecn, Inst Francoargentino Estudios Clima & Sus Impacto, Buenos Aires, DF, Argentina. Univ Cape Town, Oceanog Dept, Rondebosch, South Africa. Univ Cape Town, Marine Res Inst, Rondebosch, South Africa. Univ Sao Paulo, Oceanog Inst, Sao Paulo, Brazil. Univ Fed Ceara, Ocean Sci Lab, Fortaleza, Ceara, Brazil. Univ Miami, Cooperat Inst Marine & Atmospher Studies, Miami, FL USA. Univ Brest, Lab Oceanog Phys & Spatiale, IFREMER, CNRS,IRD,IUEM, Plouzane, France. Oceans & Coasts Res Branch, Dept Environm Affairs, Cape Town, South Africa. C2 ATLANTIC OCEANOG & METEOROL LAB NOAA, USA ENS, FRANCE SERV HIDROG NAVAL, ARGENTINA UNIV BUENOS AIRES, ARGENTINA CONICET, ARGENTINA UNIV CAPE TOWN, SOUTH AFRICA UNIV CAPE TOWN, SOUTH AFRICA UNIV SAO PAULO, BRAZIL UNIV FED CEARA, BRAZIL UNIV MIAMI, USA IFREMER, FRANCE OCEANS & COASTS RES BRANCH, SOUTH AFRICA UBO, FRANCE SI BREST SE PDG-ODE-LOPS UM LOPS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france copubli-int-hors-europe copubli-sud IF 4.578 TC 52 UR https://archimer.ifremer.fr/doc/00445/55612/57253.pdf LA English DT Article DE ;meridional overturning circulation;South Atlantic;overturning;volume transport;observations AB Six years of simultaneous moored observations near the western and eastern boundaries of the South Atlantic are combined with satellite winds to produce a daily time series of the basin-wide meridional overturning circulation (MOC) volume transport at 34.5 degrees S. The results demonstrate that barotropic and baroclinic signals at both boundaries cause significant transport variations, and as such must be concurrently observed. The data, spanning similar to 20 months during 2009-2010 and similar to 4 years during 2013-2017, reveal a highly energetic MOC record with a temporal standard deviation of 8.3 Sv, and strong variations at time scales ranging from a few days to years (peak-to-peak range = 54.6 Sv). Seasonal transport variations are found to have both semiannual (baroclinic) and annual (Ekman and barotropic) timescales. Interannual MOC variations result from both barotropic and baroclinic changes, with density profile changes at the eastern boundary having the largest impact on the year-to-year variations. PY 2018 PD MAY SO Geophysical Research Letters SN 0094-8276 PU Amer Geophysical Union VL 45 IS 9 UT 000434111700048 BP 4180 EP 4188 DI 10.1029/2018GL077408 ID 55612 ER EF