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| 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. |
| 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... |
| Tipo: Text |
Palavras-chave: Meridional overturning circulation; Thermohaline circulation; Observing systems; Ocean heat transport; Carbon storage; Moorings; Circulation variability. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00503/61507/65342.pdf |
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| Ansorge, Isabelle J.; Baringer, Molly; Campos, Edmo J.d.; Dong, S.; Fine, R.a.; Garzoli, Silvia L.; Goni, Gustavo; Meinen, Christopher S.; Perez, R.c.; Piola, Alberto R.; Roberts, M.j.; Speich, Sabrina; Sprintall, J.; Terre Terrillon, Thierry; Van Den Berg, M.a.. |
| The meridional overturning circulation (MOC) is a global system of surface, intermediate, and deep ocean currents. The MOC connects the surface layer of the ocean and the atmosphere with the huge reservoir of the deep sea and is the primary mechanism for transporting heat, freshwater, and carbon between ocean basins. Climate models show that past changes in the strength of the MOC were linked to historical climate variations. Further research suggests that the MOC will continue to modulate climate change scenarios on time scales ranging from decades to centuries [Latif et al., 2006]. |
| Tipo: Text |
Palavras-chave: South Atlantic; Meridional Overturning Circulation; CPIES. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00175/28609/27109.pdf |
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| 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.. |
| 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... |
| Tipo: Text |
Palavras-chave: Meridional overturning circulation; South Atlantic; Overturning; Volume transport; Observations. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00445/55612/57253.pdf |
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| Kersalé, Marion; Perez, Renellys C.; Speich, Sabrina; Meinen, Christopher S.; Lamont, Tarron; Le Hénaff, Matthieu; Van Den Berg, Marcel A.; Majumder, Sudip; Ansorge, Isabelle J.; Dong, Shenfu; Schmid, Claudia; Terre, Thierry; Garzoli, Silvia L.. |
| The first in situ continuous full‐water‐column observations of the Eastern Boundary Currents (EBCs) at 34.5°S in the South Atlantic are obtained using 23 months of data from a line of Current and Pressure recording Inverted Echo Sounders (CPIES) spanning the Cape Basin. The CPIES are used to evaluate the mean structure of the EBC, the associated water masses, and the volume transport variability. The estimated northward time‐mean Benguela Current absolute geostrophic transport is 24 Sv, with a temporal standard deviation of 17 Sv. Beneath this current the time‐mean transport is southward, indicating the presence of a deep‐EBC (DEBC), with a time‐mean transport of 12 Sv, and a standard deviation of 17 Sv. Offshore of these currents, the shallow and deep... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00479/59022/61644.pdf |
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| Achberger, Christine; Ackerman, Steven A.; Ahlstrom, A.; Alfaro, Eric J.; Allan, Robert J.; Alves, Robert J.; Amador, Jorge A.; Amelie, Vincent; Andrianjafinirina, Solonomenjanahary; Antonov, John; Arndt, Derek S.; Ashik, Igor; Atheru, Zachary; Attaher, Samar M.; Baez, Julian; Banzon, Viva; Baringer, Molly O.; Barreira, Sandra; Barriopedro, David; Barthia, Pawan K.; Beal, Lisa M.; Becker, Andreas; Behrenfeld, Michael J.; Bell, Gerald D.; Belward, Alan S.; Benedetti, Angela; Berrisford, Paul; Berry, David I.; Beszczynska-moeller, Agnieszka; Bhatt, Uma S.; Bidegain, Mario; Bindoff, Nathaniel L.; Bissolli, Peter; Blake, Eric S.; Blunden, Jessica; Booneeady, Prithiviraj; Bosilovich, Michael G.; Boudet, Dagne R.; Box, Jason E.; Boyer, Timothy P.; Bromwich, David H.; Brown, Ross; Bryden, Harry L.; Bulygina, Olga N.; Burrows, John; Butler, J.; Cais, Philippe; Calderon, Blanca; Callaghan, T. V.; Camargo, Suzana J.; Cappelen, John; Carmack, Eddy; Chambers, Don P.; Chelliah, Muthuvel; Chidichimo, Maria P.; Christiansen, H.; Christy, John; Coehlo, Caio A. S.; Colwell, Steve; Comiso, Josefino C.; Compo, Gilber P.; Crouch, Jake; Cunningham, Stuart A.; Cutie, Virgen C.; Dai, Aiguo; Davydova-belitskaya, Valentina; De Jeu, Richard; Decker, David; Dee, Dick; Demircan, M.; Derksen, Chris; Diamond, Howard J.; Dlugokencky, Howard; Dohan, Kathleen; Dolman, A. Johannes; Dorigo, Wouter; Drozdov, Dmitry S.; Durack, Paul J.; Dutton, Geoffrey S.; Easterling, David; Ebita, Ayataka; Eischeid, Jon; Elkins, James W.; Epstein, Howard E.; Euscategui, Christian; Faijka-williams, Eleanor; Famiglietti, James S.; Faniriantsoa, Rija; Feely, Richard A.; Fekete, Balazs M.; Fenimore, Chris; Fettweis, Xavier; Field, Eric; Fioletov, Vitali E.; Fogarty, Vitali E.; Fogt, Ryan L.; Forbes, B. C.; Foster, Michael J.; Frajka-williams, E.; Free, Melissa; Frolov, Ivan; Ganesan, A. L.; Ganter, Catherine; Gibney, Ethan J.; Gill, Stephen; Gill, M.; Gitau, Wilson; Gleason, Karin L.; Gobron, Nadine; Goldenberg, Stanley B.; Goni, Gustavo J.; Gonzalez, Idelmis G.; Good, Simon A.; Gottschalck, Jonathan; Gould, William A.; Gouveia, Celia M.; Griffiths, Georgina M.; Guard, Chip; Guevara, Vladimir V.; Haas, C.; Hall, Bradley D.; Halpert, Michael S.; Heidinger, Andrew K.; Heil, A.; Heim, Richard R., Jr.; Hennon, Paula A.; Henry, Greg H. R.; Hidalgo, Hugo G.; Hilburn, Kyle; Hirschi, Joel J. M.; Ho, Shu-peng; Hobgood, Jay S.; Hoerling, Martin; Holgate, Simon; Hook, Simon J.; Hugony, Sebastien; Hurst, D.; Ishihara, Hiroshi; Itoh, M.; Jaimes, Ena; Jeffries, Martin; Jia, Gensu J.; Jin, Xiangze; John, William E.; Johnson, Bryan; Johnson, Gregory C.; Jones, Philip D.; Jumaux, Guillaume; Kabidi, Khadija; Kaiser, Johannes W.; Kanzow, Torsten O.; Kaplan, Alexey; Kearns, Edward J.; Keller, Linda M.; Kennedy, John J.; Khatiwala, Samar; Kholodov, Alexander; Khoshkam, Mahbobeh; Kikuchi, T.; Kimberlain, Todd B.; Knaff, John A.; Kobayashi, Shinya; Kokelj, Steve V.; Korshunova, Natalia N.; Kratz, David P.; Krishfield, Richard; Kruger, Andries; Kruk, Michael C.; Kumar Arun,; Lammers, Richard B.; Lander, Mark A.; Landsea, Chris W.; Lantuit, Hugues; Lantz, Trevor C.; Lapinel, Braulio P.; Lareef, Zubair; Lazzara, Matthew A.; Leon, Antonia L; Leon, Gloria; Lauliette, Eric; Levitus, Sydney; Levy, Joel M.; L'Heureux, Michelle; Lin, I. I.; Liu, Hongxing; Liu, Yanju; Liu, Yi; Loeb, Norman G.; Long, Craig S.; Lorrey, Andrew M.; Lumpkin, Rick; Luo, Jing-jia; Lyman, John M.; Macdonald, Alison M.; Maddux, Brent C.; Maier, Frank; Malkova, Galina; Marchenko, Sergey; Marengo, Jose A.; Maritorena, Stephane; Marotzke, Jochem; Martinez Guingla, Rodney; Maslanik, Jochem; Masson, Robert A.; Mcbride, Charlotte; Mcgree, Simon; Mclaughlin, Fiona; Mcpeters, Rich; Mcvicar, Tim R.; Mears, Carl A.; Medany, Mahmoud A.; Meier, Walt; Meinen, Christopher S.; Merrifield, Mark A.; Miller, Laury; Mitchum, Gary T.; Montzka, Steve; Morcrette, Jean-jacques; Mote, Thomas; Muhle, Jens; Mullan, A. Brett; Murray, Don; Nash, Eric R.; Nerem, Steven R.; Newman, Paul A.; Nishino, S.; Njau, Leonard; Noetzli, J.; Oberbauer, S. F.; Oberman, Naum; Obregon, Andre; Ogallo, Laban; Oludhe, Christopher; O'Malley, Robert T.; Overland, James; Park, Geun-ha; Parker, David E.; Pasch, Richard J.; Pegion, Phil; Peltier, Alexandre; Pelto, Mauri S.; Penalba, Olga C.; Perez, Ramon S; Perlwitz, Judith; Perovich, Donald; Peterson, Thomas C.; Pezza, Alexandre B.; Phillips, David; Pinzon, Jorge E.; Pitts, Michael C.; Proshutinsky, A.; Quegan, S.; Quintana, Juan; Quintero, Alexander; Rabe, B.; Rahimzadeh, Fatemeh; Rajeevan, Madhavan; Rayner, Darren; Rayner, Nick A.; Raynolds, Martha K.; Razuvaev, Vyacheslav N.; Reagan, James R.; Reid, Phillip; Renwick, James A.; Revadekar, Jayashree; Reynolds, Richard W.; Richter-menge, Jacqueline; Rignot, Eric; Robinson, David A.; Rodell, Matthew; Rogers, Mark; Romanovsky, Vladimir; Romero-cruz, Fernando; Ronchail, Josyane; Rosenlof, Karen; Rossi, Shawn; Rutledge, Glenn; Saatchi, Sassan; Sabine, Christopher L.; Saha, Suranjana; Sanchez-lugo, Ahira; Santee, Michelle L.; Sato, Hitoshi; Sawaengphokhai, P.; Sayouri, Amal; Scambos, Ted A.; Schauer, U.; Schemm, Jae; Schmid, Claudia; Schneider, Philipp; Schueller, Dominique; Sensoy, Serhat; Sharp, Martin; Shaver, Gus R.; Shiklomanov, Alexander; Shiklomanov, N.; Shimada, Koji; Siegel, David A.; Simmons, Adrian; Skansi, Maria; Smith, Adam; Smith, Cathy; Smith, S.; Smith, Thomas M.; Sokolov, Vladimir; Spence, Jacqueline M.; Srivastava, Arvind Kumar; Stackhouse, Paul W., Jr.; Stammerjohn, Sharon; Steele, Mike; Steinbrecht, Wolfgang; Stephenson, Tannecia S.; Stolarski, Richard S.; Tahani, Lloyd; Takahashi, Taro; Taylor, Michael A.; Thepaut, Jean-noel; Thiaw, Wassila M.; Thorne, Peter W.; Timmermans, M. L.; Tobin, Skie; Toole, John; Trewin, Blair C.; Trigo, Ricardo M.; Tucker, Compton J.; Tweedie, Craig E.; Van As, D.; Van De Wal, R. S. W.; Van Der A, Ronald J.; Van Der Werf, G. R.; Vautard, Robert; Vieira, G.; Vincent, Lucie A.; Vinther, Lucie A.; Vinther, B.; Vose, Russell; Wagner, Wolfgang; Wahr, John; Walker, David A.; Walsh, John; Wang, Chunzai; Wang, Junhong; Wang, Lei; Wang, Muyin; Wang, Sheng-hung; Wanninkhof, Rik; Weaver, Scott; Webber, Patrick J.; Weber, Mark; Weller, Robert A.; Weyman, James; Whitewood, Robert; Wijffels, Susan E.; Wilber, Anne C.; Willett, Katharine M.; Williams, W.; Willis, Joshua K.; Wolken, Gabriel; Wong, Takmeng; Woodgate, Rebecca; Woodworth, Philip; Wovrosh, Alex J.; Xue, Yan; Yamamoto-kawai, M.; Yin, Xungang; Yu, Lisan; Zhang, Liangying; Zhang, Peiqun; Zhao, L.; Zhou, Xinjia; Zimmermann, S.. |
| Several large-scale climate patterns influenced climate conditions and weather patterns across the globe during 2010. The transition from a warm El Nino phase at the beginning of the year to a cool La Nina phase by July contributed to many notable events, ranging from record wetness across much of Australia to historically low Eastern Pacific basin and near-record high North Atlantic basin hurricane activity. The remaining five main hurricane basins experienced below-to well-below-normal tropical cyclone activity. The negative phase of the Arctic Oscillation was a major driver of Northern Hemisphere temperature patterns during 2009/10 winter and again in late 2010. It contributed to record snowfall and unusually low temperatures over much of northern... |
| Tipo: Text |
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| Ano: 2011 |
URL: https://archimer.ifremer.fr/doc/00660/77164/78582.pdf |
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| Meinen, Christopher S.; Speich, Sabrina; Perez, Renellys C.; Dong, Shenfu; Piola, Alberto R.; Garzoli, Silvia L.; Gladyshev, Sergey; Baringer, Molly; Campos, Edmo J. D.. |
| Data from two boundary arrays deployed along 34.5°S are combined to produce the first continuous in situ time series observations of the basin-wide meridional overturning circulation (MOC) in the South Atlantic. Daily estimates of the MOC between March 2009 and December 2010 range between 3 Sv and 39 Sv (1 Sv = 106 m3 s−1) after a 10 day low-pass filter is applied. Much of the variability in this ∼20 month record occurs at periods shorter than 100 days. Approximately two-thirds of the MOC variability is due to changes in the geostrophic (baroclinic plus barotropic) volume transport, with the remainder associated with the direct wind-forced Ekman transport. When low-pass filtered to match previously published analyses in the North Atlantic, the observed... |
| Tipo: Text |
Palavras-chave: Meridional overturning circulation; Transport; South Atlantic; Inverted echo sounder; Bottom pressure. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00167/27789/25982.pdf |
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