STATE OF THE CLIMATE IN 2021

Jessica Blunden*, Tim Boyer, Robert J.H. Dunn*, Jessicca Allen, Gregory Hammer, S. Elizabeth Love-Brotak, Deborah J. Misch, Laura Ohlmann, Deborah B. Riddle, Sara W. Veasey, Melanie Ades, Robert Adler, Freya Aldred, R. P. Allan, John Anderson, Orlane Anneville, Yasuyuki Aono, Anthony Argüez, Carlo Arosio, John A. AugustineCesar Azorin-Molina, Jonathan Barichivich, Aman Basu, Hylke E. Beck, Nicolas Bellouin, Angela Benedetti, Kevin Blagrave, Stephen Blenkinsop, Olivier Bock, Xavier Bodin, Michael G. Bosilovich, Olivier Boucher, Gerald Bove, Dennis Buechler, Stefan A. Buehler, Laura Carrea, Kai Lan Chang, Hanne H. Christiansen, John R. Christy, Eui Seok Chung, Laura M. Ciasto, Melanie Coldewey-Egbers, Owen R. Cooper, Richard C. Cornes, Curt Covey, Thomas Cropper, Molly Crotwell, Diego Cusicanqui, Sean M. Davis, Richard A.M. de Jeu, Doug Degenstein, Reynald Delaloye, Markus G. Donat, Wouter A. Dorigo, Imke Durre, Geoff S. Dutton, Gregory Duveiller, James W. Elkins, Thomas W. Estilow, David Fereday, Johannes Flemming, Michael J. Foster, Stacey M. Frith, Lucien Froidevaux, Martin Füllekrug, Judith Garforth, Jay Garg, Matthew Gentry, Nadine Gobron, Steven Goodman, Qiqi Gou, Nikolay Granin, Mauro Guglielmin, Sebastian Hahn, Leopold Haimberger, Brad D. Hall, Ian Harris, Debbie L. Hemming, Martin Hirschi, Shu Pen Ho, Robert Holzworth, Filip Hrbáček, Daan Hubert, Petra Hulsman, Dale F. Hurst, Antje Inness, Ketil Isaksen, Viju O. John, Philip D. Jones, Robert Junod, Andreas Kääb, Johannes W. Kaiser, Viktor Kaufmann, Andreas Kellerer-Pirklbauer, Elizabeth C. Kent, Richard Kidd, Hyungiun Kim, Zak Kipling, Akash Koppa, Jan Henning L'Abée-Lund, Xin Lan, Kathleen O. Lantz, David Lavers, Norman G. Loeb, Diego Loyola, Remi Madelon, Hilmar J. Malmquist, Wlodzimierz Marszelewski, Michael Mayer, Matthew F. McCabe, Tim R. McVicar, Carl A. Mears, Annette Menzel, Christopher J. Merchant, John B. Miller, Diego G. Miralles, Stephen A. Montzka, Colin Morice, Leander Mösinger, Jens Mühle, Julien P. Nicolas, Jeannette Noetzli, Tiina Nõges, Ben Noll, John O'Keefe, Tim J. Osborn, Taejin Park, Cecile Pellet, Maury S. Pelto, Sarah E. Perkins-Kirkpatrick, Coda Phillips, Stephen Po-Chedley, Lorenzo Polvani, Wolfgang Preimesberger, Colin Price, Merja Pulkkanen, Dominik G. Rains, William J. Randel, Samuel Rémy, Lucrezia Ricciardulli, Andrew D. Richardson, David A. Robinson, Matthew Rodell, Nemesio J. Rodríguez-Fernández, Karen H. Rosenlof, Chris Roth, Alexei Rozanov, This Rutishäuser, Parnchai Sawaengphokhai, Verena Schenzinger, Robert W. Schlegel, Udo Schneider, Sapna Sharma, Lei Shi, Adrian J. Simmons, Carolina Siso, Brian J. Soden, Viktoria Sofieva, Tim H. Sparks, Stackhouse, Ryan Stauffer, Wolfgang Steinbrecht, Andrea K. Steiner, Kenton Stewart, Pietro Stradiotti, Dimitri A. Streletskiy, Hagen Telg, Stephen J. Thackeray, Emmanuel Thibert, Michael Todt, Daisuke Tokuda, Kleareti Tourpali, Mari R. Tye, Ronald van Der A, Robin van der Schalie, Gerard van der Schrier, Mendy van der Vliet, Guido R. van der Werf, Arnold van Vliet, Jean Paul Vernier, Isaac J. Vimont, Katrina Virts, Sebastiàn Vivero, Holger Vömel, Russell S. Vose, Ray H.J. Wang, Markus Weber, David Wiese, Jeanette D. Wild, Kate M. Willett, Earle Williams, Takmeng Wong, R. I. Woolway, Xungang Yin, Ye Yuan, Lin Zhao, Xinjia Zhou, Jerry R. Ziemke, Markus Ziese, Ruxandra M. Zotta, Francis Bringas, Ivona Cetinić, Don P. Chambers, Lijing Cheng, Shenfu Dong, Richard A. Feely, Baylor Fox-Kemper, Eleanor Frajka-Williams, Bryan A. Franz, Yao Fu, Meng Gao, John Gilson, Gustavo Goni, Benjamin D. Hamlington, Helene T. Hewitt, William R. Hobbs, Zeng Zhen Hu, Boyin Huang, Svetlana Jevrejeva, William E. Johns, Gregory C. Johnson, Sato Katsunari, John J. Kennedy, Marion Kersalé, Rachel E. Killick, Eric Leuliette, Ricardo Locarnini, M. Susan Lozier, Rick Lumpkin*, John M. Lyman, Mark A. Merrifield, Alexey Mishonov, Gary T. Mitchum, Ben I. Moat, R. Steven Nerem, Dirk Notz, Renellys C. Perez, Sarah G. Purkey, Darren Rayner, James Reagan, Claudia Schmid, David A. Siegel, David A. Smeed, Paul W. Stackhouse, William Sweet, Philip R. Thompson, Denis L. Volkov, Rik Wanninkhof, Robert A. Weller, Caihong Wen, Toby K. Westberry, Matthew J. Widlansky, Josh K. Willis, Lisan Yu, Huai Min Zhang, Adam Allgood, Emily J. Becker, Eric S. Blake, Francis G. Bringas, Suzana J. Camargo, Lin Chen, Caio A.S. Coelho, Howard J. Diamond*, Nicolas Fauchereau, Stanley B. Goldenberg, Michael S. Halpert, Qiong He, Philip J. Klotzbach, John A. Knaff, Arun Kumar, Chris W. Landsea, Michelle L'Heureux, I. I. Lin, Andrew M. Lorrey, Jing Jia Luo, Andrew D. Magee, Richard J. Pasch, Alexandre B. Pezza, Matthew Rosencrans, Carl J. Schreck, Blair C. Trewin, Ryan E. Truchelut, Bin Wang, Hui Wang, Kimberly M. Wood, John Mark Woolley, L. M. Andreassen, E. Baker, Thomas J. Ballinger, Logan T. Berner, Germar H. Bernhard, Uma S. Bhatt, Jarle W. Bjerke, L. N. Boisvert, Jason E. Box, B. Brettschneider, D. Burgess, Amy H. Butler, John Cappelen, B. Decharme, C. Derksen, Dmitry Divine, D. S. Drozdov, Matthew L. Druckenmiller, A. Elias Chereque, Howard E. Epstein, Sinead L. Farrell, Robert S. Fausto, Xavier Fettweis, Vitali E. Fioletov, Bruce C. Forbes, Gerald V. Frost, Sebastian Gerland, Scott J. Goetz, Jens Uwe Grooß, Christian Haas, Edward Hanna, Inger Hanssen-Bauer, M. M.P.D. Heijmans, Stefan Hendricks, Iolanda Ialongo, K. Isaksen, C. D. Jensen, Bjørn Johnsen, L. Kaleschke, A. L. Kholodov, Seong Joong Kim, J. Kohler, Niels J. Korsgaard, Zachary Labe, Kaisa Lakkala, Mark J. Lara, Simon H. Lee, Bryant Loomis, B. Luks, K. Luojus, Matthew J. Macander, R. Magnússon, G. V. Malkova, Kenneth D. Mankoff, Gloria L. Manney, Walter N. Meier, Twila A. Moon, Thomas Mote, Lawrence Mudryk, Rolf Muller, K. E. Nyland, James E. Overland, F. Pálsson, T. Park, C. L. Parker, Don Perovich, Alek Petty, Gareth K. Phoenix, J. E. Pinzon, Robert Ricker, Vladimir E. Romanovsky, S. P. Serbin, G. Sheffield, Nikolai I. Shiklomanov, Sharon L. Smith, K. M. Stafford, A. Steer, Tove Svendby, Marco Tedesco, Richard L. Thoman*, L. Thomson, T. Thorsteinsson, X. Tian-Kunze, Mary Louise Timmermans, Hans Tømmervik, Mark Tschudi, C. J. Tucker, Donald A. Walker, John E. Walsh, Muyin Wang, Melinda Webster, A. Wehrlé, Øyvind Winton, G. Wolken, K. Wood, B. Wouters, D. Yang, Susheel Adusumilli, Rebecca Baiman, Alison F. Banwell, Sandra Barreira, Rebecca L. Beadling, Kyle R. Clem*, Steve Colwell, Lawrence Coy, Rajashree T. Datta, Jos De Laat, Devon Dunmire, Ryan L. Fogt, Natalie M. Freeman, Helen Amanda Fricker, Alex S. Gardner, Bryan Johnson, Linda M. Keller, Natalya A. Kramarova, Matthew A. Lazzara, Jan L. Lieser, Michael MacFerrin, Graeme A. MacGilchrist, Michelle L. MacLennan, Robert A. Massom, Matthew R. Mazloff, Thomas L. Mote, Eric R. Nash, Paul A. Newman, Taylor Norton, Irina Petropavlovskikh, Michael Pitts, Marilyn N. Raphael, Phillip Reid, Michelle L. Santee, Ted A. Scambos, Jia Rui Shi, Sharon Stammerjohn, Susan E. Strahan, Andrew F. Thompson, Jonathan D. Wille, Earle Wilson, A. Abida, W. Agyakwah, Laura S. Aldeco, Eric J. Alfaro, Teddy Allen, Lincoln M. Alves, Jorge A. Amador, B. Andrade, P. Asgarzadeh, Grinia Avalos, Julian Baez, M. Yu Bardin, E. Bekele, Renato Bertalanic, Peter Bissolli, Oliver Bochníček, Brandon Bukunt, Blanca Calderón, Jayaka D. Campbell, Elise Chandler, Candice S. Charlton, Vincent Y.S. Cheng, Leonardo A. Clarke, Kris Correa, Catalina R. Cortés Salazar, Felipe Costa, Lenka Crhová, Ana Paula Cunha, Mesut Demircan, K. R. Dhurmea, Diana A. Domínguez, Dashkhuu Dulamsuren, M. ElKharrim, Jhan Carlo Espinoza, A. Fazl-Kezemi, Nava Fedaeff, Chris Fenimore, Steven Fuhrman, Catherine Ganter, Karin Gleason, Charles P. Guard, Samson Hagos, Mizuki Hanafusa, Richard R. Heim, John Kennedy, Sverker Hellström, Hugo G. Hidalgo, I. A. Ijampy, Gyo Soon Im, G. Jumaux, K. Kabidi, Kenneth Kerr, Yelena Khalatyan, Valentina Khan, Mai Van Khiem, Tobias Koch, Gerbrand Koren, Natalia N. Korshunova, A. C. Kruger, Mónika Lakatos, Jostein Mamen, Hoang Phuc Lam, Mark A. Lander, Waldo Lavado-Casimiro, Tsz Cheung Lee, Kinson H.Y. Leung, Xuefeng Liu, Rui Lu, José A. Marengo, Mohammadi Marjan, Ana E. Martínez, Charlotte McBride, Ademe Mekonnen, Mirek Mietus, Noelia Misevicius, Aurel Moise, Jorge Molina-Carpio, Natali Mora, Awatif E. Mostafa, O. Ndiaye, Juan J. Nieto, Kristin Olafsdottir, Reynaldo Pascual Ramírez, David Phillips, Amos Porat, Esteban Rodriguez Guisado, Madhavan Rajeevan, Andrea M. Ramos, Cristina Recalde Coronel, Alejandra J. Reyes Kohler, M. Robjhon, Josyane Ronchail, Roberto Salinas, Ahira Sánchez-Lugo, Hirotaka Sato, Hitoshi Sato, Amal Sayouri, Serhat Sensoy, Amsari Mudzakir Setiawan, F. Sima, Adam Smith, Matthieu Sorel, Sandra Spillane, Jacqueline M. Spence, O. P. Sreejith, A. K. Srivastava, Tannecia S. Stephenson, Kiyotoshi Takahashi, Michael A. Taylor, Wassila M. Thiaw, Skie Tobin, Lidia Trescilo, Adrian R. Trotman, Cedric J. Van Meerbeeck, A. Vazifeh, Shunya Wakamatsu, M. F. Zaheer, F. Zeng, Peiqun Zhang, Zhiwei Zhu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

In 2021, both social and economic activities began to return towards the levels preceding the COVID-19 pandemic for some parts of the globe, with others still experiencing restrictions. Meanwhile, the climate has continued to respond to the ongoing increase in greenhouse gases and resulting warming. La Nia, a phenomenon which tends to depress global temperatures while changing rainfall patterns in many regions, prevailed for all but two months of the year. Despite this, 2021 was one of the six-warmest years on record as measured by global mean surface temperature with an anomaly of between +0.21 and +0.28C above the 19912020 climatology.

Original languageEnglish
Pages (from-to)S11-S142
JournalBulletin of the American Meteorological Society
Volume103
Issue number8
DOIs
StatePublished - Aug 2022

Funding

FundersFunder number
Argentine Naval Hydrographic Service80NSSC21K0750, NN1X 4AM54G, ANT 1738992
Australian Centre for Excellence in Antarctic SciencePLR 1440435, SR200100008
Caltech’s
Finnish Meteorological Institute for operating the Brewer UV spectroradiometer at Sodankylä
GOES-R Series Science
Institute of Arctic and Alpine Research
Met Office Hadley Centre Climate Programme
NASA Ocean Vector Winds Science Team
NOAA-CPC
NSF-NERC
New Zealand Deep South National Science Challenge
University of Colorado Boulder Cooperative Institute for Research in Environmental Sciences
National Science Foundation1713072, OPP1-744998, OPP1-924730, 6942679, PLR1-603331
National Science Foundation
Office of Polar Programs
National Aeronautics and Space Administration1X 7AH04G, 80NS-SC19K0059, 80NSSC21K0923, 80GSFC20C044, 80NSSC17K0351
National Aeronautics and Space Administration
National Oceanic and Atmospheric Administration
Jet Propulsion Laboratory
Marshall Space Flight CenterNNM11AA01A
Marshall Space Flight Center
Biological and Environmental Research
University of Colorado Boulder
Department for Business, Energy and Industrial Strategy, UK Government
Ministry of Energy2201-7-002
Ministry of Energy
Heising-Simons Foundation1900324
Heising-Simons Foundation
Natural Environment Research CouncilNE/L012669/1, NE/H024921/1
Natural Environment Research Council
Department for Environment, Food and Rural Affairs, UK Government
Royal SocietyNMG/R1/180252
Royal Society
European Commission
European Space Agency
Australian Research Council
Agence Nationale de la RechercheANR2-0-CE01-0013, 1952199
Agence Nationale de la Recherche
National Natural Science Foundation of China42076202
National Natural Science Foundation of China
Academy of Finland329225
Academy of Finland
Chinese Academy of SciencesXDB42040402
Chinese Academy of Sciences
Israel Science Foundation2701/17
Israel Science Foundation
Norges Forskningsråd223268/F50
Norges Forskningsråd
Miljødirektoratet
Marsden FundMFP-VUW2010
Marsden Fund
Neurosciences FoundationPLR1-425989
Neurosciences Foundation

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