Articles | Volume 20, issue 2
https://doi.org/10.5194/os-20-589-2024
https://doi.org/10.5194/os-20-589-2024
Research article
 | 
17 Apr 2024
Research article |  | 17 Apr 2024

Comparing observed and modelled components of the Atlantic Meridional Overturning Circulation at 26° N

Harry Bryden, Jordi Beunk, Sybren Drijfhout, Wilco Hazeleger, and Jennifer Mecking

Related authors

Earth Virtualization Engines (EVE)
Bjorn Stevens, Stefan Adami, Tariq Ali, Hartwig Anzt, Zafer Aslan, Sabine Attinger, Jaana Bäck, Johanna Baehr, Peter Bauer, Natacha Bernier, Bob Bishop, Hendryk Bockelmann, Sandrine Bony, Guy Brasseur, David N. Bresch, Sean Breyer, Gilbert Brunet, Pier Luigi Buttigieg, Junji Cao, Christelle Castet, Yafang Cheng, Ayantika Dey Choudhury, Deborah Coen, Susanne Crewell, Atish Dabholkar, Qing Dai, Francisco Doblas-Reyes, Dale Durran, Ayoub El Gaidi, Charlie Ewen, Eleftheria Exarchou, Veronika Eyring, Florencia Falkinhoff, David Farrell, Piers M. Forster, Ariane Frassoni, Claudia Frauen, Oliver Fuhrer, Shahzad Gani, Edwin Gerber, Debra Goldfarb, Jens Grieger, Nicolas Gruber, Wilco Hazeleger, Rolf Herken, Chris Hewitt, Torsten Hoefler, Huang-Hsiung Hsu, Daniela Jacob, Alexandra Jahn, Christian Jakob, Thomas Jung, Christopher Kadow, In-Sik Kang, Sarah Kang, Karthik Kashinath, Katharina Kleinen-von Königslöw, Daniel Klocke, Uta Kloenne, Milan Klöwer, Chihiro Kodama, Stefan Kollet, Tobias Kölling, Jenni Kontkanen, Steve Kopp, Michal Koran, Markku Kulmala, Hanna Lappalainen, Fakhria Latifi, Bryan Lawrence, June Yi Lee, Quentin Lejeun, Christian Lessig, Chao Li, Thomas Lippert, Jürg Luterbacher, Pekka Manninen, Jochem Marotzke, Satoshi Matsouoka, Charlotte Merchant, Peter Messmer, Gero Michel, Kristel Michielsen, Tomoki Miyakawa, Jens Müller, Ramsha Munir, Sandeep Narayanasetti, Ousmane Ndiaye, Carlos Nobre, Achim Oberg, Riko Oki, Tuba Özkan-Haller, Tim Palmer, Stan Posey, Andreas Prein, Odessa Primus, Mike Pritchard, Julie Pullen, Dian Putrasahan, Johannes Quaas, Krishnan Raghavan, Venkatachalam Ramaswamy, Markus Rapp, Florian Rauser, Markus Reichstein, Aromar Revi, Sonakshi Saluja, Masaki Satoh, Vera Schemann, Sebastian Schemm, Christina Schnadt Poberaj, Thomas Schulthess, Cath Senior, Jagadish Shukla, Manmeet Singh, Julia Slingo, Adam Sobel, Silvina Solman, Jenna Spitzer, Philip Stier, Thomas Stocker, Sarah Strock, Hang Su, Petteri Taalas, John Taylor, Susann Tegtmeier, Georg Teutsch, Adrian Tompkins, Uwe Ulbrich, Pier-Luigi Vidale, Chien-Ming Wu, Hao Xu, Najibullah Zaki, Laure Zanna, Tianjun Zhou, and Florian Ziemen
Earth Syst. Sci. Data, 16, 2113–2122, https://doi.org/10.5194/essd-16-2113-2024,https://doi.org/10.5194/essd-16-2113-2024, 2024
Short summary
Tipping points in ocean and atmosphere circulations
Sina Loriani, Yevgeny Aksenov, David Armstrong McKay, Govindasamy Bala, Andreas Born, Cristiano M. Chiessi, Henk Dijkstra, Jonathan F. Donges, Sybren Drijfhout, Matthew H. England, Alexey V. Fedorov, Laura Jackson, Kai Kornhuber, Gabriele Messori, Francesco Pausata, Stefanie Rynders, Jean-Baptiste Salée, Bablu Sinha, Steven Sherwood, Didier Swingedouw, and Thejna Tharammal
EGUsphere, https://doi.org/10.5194/egusphere-2023-2589,https://doi.org/10.5194/egusphere-2023-2589, 2023
Short summary
Forcing and impact of the Northern Hemisphere continental snow cover in 1979–2014
Guillaume Gastineau, Claude Frankignoul, Yongqi Gao, Yu-Chiao Liang, Young-Oh Kwon, Annalisa Cherchi, Rohit Ghosh, Elisa Manzini, Daniela Matei, Jennifer Mecking, Lingling Suo, Tian Tian, Shuting Yang, and Ying Zhang
The Cryosphere, 17, 2157–2184, https://doi.org/10.5194/tc-17-2157-2023,https://doi.org/10.5194/tc-17-2157-2023, 2023
Short summary
A 30-year reconstruction of the Atlantic meridional overturning circulation shows no decline
Emma L. Worthington, Ben I. Moat, David A. Smeed, Jennifer V. Mecking, Robert Marsh, and Gerard D. McCarthy
Ocean Sci., 17, 285–299, https://doi.org/10.5194/os-17-285-2021,https://doi.org/10.5194/os-17-285-2021, 2021
Short summary
Characterisation of Atlantic meridional overturning hysteresis using Langevin dynamics
Jelle van den Berk, Sybren Drijfhout, and Wilco Hazeleger
Earth Syst. Dynam., 12, 69–81, https://doi.org/10.5194/esd-12-69-2021,https://doi.org/10.5194/esd-12-69-2021, 2021
Short summary

Related subject area

Approach: In situ Observations | Properties and processes: Overturning circulation, gyres and water masses
The Southern Ocean deep mixing band emerges from a competition between winter buoyancy loss and upper stratification strength
Romain Caneill, Fabien Roquet, and Jonas Nycander
Ocean Sci., 20, 601–619, https://doi.org/10.5194/os-20-601-2024,https://doi.org/10.5194/os-20-601-2024, 2024
Short summary
New insights into the eastern Subpolar North Atlantic meridional overturning circulation from OVIDE
Herlé Mercier, Damien Desbruyères, Pascale Lherminier, Antón Velo, Lidia Carracedo, Marcos Fontela, and Fiz F. Pérez
EGUsphere, https://doi.org/10.5194/egusphere-2024-388,https://doi.org/10.5194/egusphere-2024-388, 2024
Short summary
Water properties and bottom water patterns in hadal trench environments
Jessica Kolbusz, Jan Zika, Charitha Pattiaratchi, and Alan Jamieson
Ocean Sci., 20, 123–140, https://doi.org/10.5194/os-20-123-2024,https://doi.org/10.5194/os-20-123-2024, 2024
Short summary
North Pacific Subtropical Mode Water Volume and Density Anomalous Decrease in a Recent Stable Kuroshio Extension Period from Argo Observations
Jing Sheng, Cong Liu, Yanzhen Gu, Peiliang Li, Fangguo Zhai, and Ning Zhou
EGUsphere, https://doi.org/10.5194/egusphere-2023-2931,https://doi.org/10.5194/egusphere-2023-2931, 2023
Short summary
Long-term eddy modulation affects the meridional asymmetry of the halocline in the Beaufort Gyre
Jinling Lu, Ling Du, and Shuhao Tao
Ocean Sci., 19, 1773–1789, https://doi.org/10.5194/os-19-1773-2023,https://doi.org/10.5194/os-19-1773-2023, 2023
Short summary

Cited articles

Asbjørnsen, H. and Årthun, M.: Deconstructing future AMOC decline at 26.5° N, Geophys. Res. Lett., 50, e2023GL103515, https://doi.org/10.1029/2023GL103515, 2023. 
Baker, J. S., Bell, M. J., Jackson, L. C., Renshaw, R., Vallis, G. K., Watson, A. J. and Wood, R. A.: Overturning pathways control AMOC weakening in CMIP6 Models, Geophys. Res. Lett., 50, e2023GL103381, https://doi.org/10.1029/2023GL103381, 2023. 
Beunk, J.: Comparing observed and modeled decomposition of the Atlantic Meridional Overturning Circulation at 26° N, MSc Thesis, Department of Geosciences, Utrecht University [code], 54 pp., https://studenttheses.uu.nl/handle/20.500.12932/41572 (last access: 15 April 2024), 2022. 
Boucher, O., Denvil, S., Levavasseur, G., Cozic, A., Caubel, A., Foujols, M.-A., Meurdesoif, Y., Cadule, P., Devilliers, M., Dupont, E., and Lurton, T.: IPSL IPSL-CM6A-LR model output prepared for CMIP6 Scenario MIP SSP5-8.5, Version 20211003, Earth System Grid Federation, https://doi.org/10.22033/ESGF/CMIP6.5271, 2019. 
Boucher, O., Denvil, S., Levavasseur, G., Cozic, A., Caubel, A., Foujols, M.-A., Meurdesoif, Y., Balkanski, Y., Checa-Garcia, R., Hauglustaine, D., Bekki, S., and Marchand, M.: IPSL IPSL-CM6A-LR-INCA model output prepared for CMIP6 CMIP Historical, Version 20211003, Earth System Grid Federation, https://doi.org/10.22033/ESGF/CMIP6.13601, 2021. 
Download
Short summary
There is widespread interest in whether the Gulf Stream will decline under global warming. We analyse 19 coupled climate model projections of the AMOC over the 21st century. The model consensus is that the AMOC will decline by about 40 % due to reductions in northward Gulf Stream transport and southward deep western boundary current transport. Whilst the wind-driven Gulf Stream decreases by 4 Sv, most of the decrease in the Gulf Stream is due to a reduction of 7 Sv in its thermohaline component.