Blar i Geophysical Institute på utgivelsesdato

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    • Sparse observations induce large biases in estimates of the global ocean CO2 sink: An ocean model subsampling experiment 

      Hauck, Judith; Nissen, Cara; Landschützer, Peter; Rödenbeck, Christian; Bushinsky, Seth; Olsen, Are (Journal article; Peer reviewed, 2023)
      Estimates of ocean CO2 uptake from global ocean biogeochemistry models and pCO2-based data products differ substantially, especially in high latitudes and in the trend of the CO2 uptake since 2000. Here, we assess the ...

    • Fingerprint of Climate Change on Southern Ocean Carbon Storage 

      Wright, R.M.; Le Quéré, Quere; Mayot, N.; Olsen, Are; Bakker, D.C.E. (Journal article; Peer reviewed, 2023)
      The Southern Ocean plays a critical role in the uptake, transport, and storage of carbon by the global oceans. It is the ocean's largest sink of CO2, yet it is also among the regions with the lowest storage of anthropogenic ...

    • Decadal Changes in Ventilation and Anthropogenic Carbon in the Nordic Seas 

      Jeansson, Emil; Tanhua, Toste; Olsen, Are; Smethie Jr., William M.; Rajasakaren, Balamuralli; Olafsdóttir, Solveig R.; Ólafsson, Jón (Journal article; Peer reviewed, 2023)
      We evaluate the decadal evolution of ventilation and anthropogenic carbon (Cant) in the Nordic Seas between 1982 and the 2010s. Ventilation changes on decadal timescale are identified by evaluating decadal changes in mean ...

    • Global Surface Ocean Acidification Indicators From 1750 to 2100 

      Jiang, Li-Qing; Dunne, John; Carter, Brendan R; Tjiputra, Jerry; Terhaar, Jens; Sharp, Jonathan D.; Olsen, Are; Alin, Simone; Bakker, Dorothee C.E.; Feely, Richard A.; Gattuso, Jean-Pierre; Hogan, Patrick; Ilyina, Tatiana; Lange, Nico; Lauvset, Siv Kari; Lewis, Ernie R.; Lovato, Tomas; Palmieri, Julien; Santana-Falcòn, Yeray; Schwinger, Jörg; Séférian, Roland; Strand, Gary; Swart, Neil; Tanhua, Toste; Tsujino, Hiroyuki; Wanninkhof, Rik; Watanabe, Michio; Yamamoto, Akitomo; Ziehn, Tilo (Journal article; Peer reviewed, 2023)
      Accurately predicting future ocean acidification (OA) conditions is crucial for advancing OA research at regional and global scales, and guiding society's mitigation and adaptation efforts. This study presents a new ...

    • Warm air intrusions reaching the MOSAiC expedition in April 2020- The YOPP targeted observing period (TOP) 

      Svensson, Gunilla; Murto, Sonja; Shupe, Matthew D.; Pithan, Felix; Magnusson, Linus; Day, Jonathan J.; Doyle, James D.; Renfrew, Ian A.; Spengler, Thomas; Vihma, Timo (Journal article; Peer reviewed, 2023)
      In the spring period of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition, an initiative was in place to increase the radiosounding frequency during warm air intrusions in the ...

    • Recent applications and potential of near-term (interannual to decadal) climate predictions 

      O'Kane, Terence J.; Scaife, Adam A.; Kushnir, Yochanan; Brookshaw, Anca; Buontempo, Carlo; Carlin, David; Connell, Richenda K.; Doblas-Reyes, Francisco; Dunstone, Nick; Förster, Kristian; Graça, Antonio; Hobday, Alistair J.; Kitsios, Vassili; van der Laan, Larissa; Lockwood, Julia; Merryfield, William J.; Paxian, Andreas; Payne, Mark R.; Reader, M. Catherine; Saville, Geoffrey R.; Smith, Doug; Solaraju-Murali, Balakrishnan; Caltabiano, Nico; Carman, Jessie; Hawkins, Ed; Keenlyside, Noel Sebastian; Kumar, Arun; Matei, Daniela; Pohlmann, Holger; Power, Scott; Raphael, Marilyn; Sparrow, Michael; Wu, Bo (Journal article; Peer reviewed, 2023)
      Following efforts from leading centres for climate forecasting, sustained routine operational near-term climate predictions (NTCP) are now produced that bridge the gap between seasonal forecasts and climate change projections ...

    • Vertical Convergence of Turbulent and Double-Diffusive Heat Flux Drives Warming and Erosion of Antarctic Winter Water in Summer 

      Giddy, I.S.; Fer, Ilker; Swart, Sebastiaan; Nicholson, S.-A. (Journal article; Peer reviewed, 2023)
      The seasonal warming of Antarctic Winter Water (WW) is a key process that occurs along the path of deep water transformation to intermediate waters. These intermediate waters then enter the upper branch of the circumpolar ...

    • Atlantic Water Boundary Current Along the Southern Yermak Plateau, Arctic Ocean 

      Fer, Ilker; Peterson, Algot Kristoffer; Nilsen, Frank (Journal article; Peer reviewed, 2023)
      The major ocean current that carries heat into the Arctic Ocean splits into three main branches of Atlantic Water (AW) and recirculations when it encounters the Yermak Plateau (YP) located north of Svalbard. While the ...

    • The Earth system model CLIMBER-X v1.0 - Part 2: The global carbon cycle 

      Willeit, Matteo; Ilyina, Tatiana; Liu, Bo; Heinze, Christoph; Perrette, Mahé; Heinemann, Malte; Dalmonech, Daniela; Brovkin, Victor; Munhoven, Guy; Börker, Janine; Hartmann, Jens; Romero-Mujalli, Gibran; Ganopolski, Andrey (Journal article; Peer reviewed, 2023)
      The carbon cycle component of the newly developed Earth system model of intermediate complexity CLIMBER-X is presented. The model represents the cycling of carbon through the atmosphere, vegetation, soils, seawater and ...

    • Freshwater transport over the northeast Greenland shelf in Fram strait 

      Karpouzoglou, Theodoros; de Steur, Laura; Dodd, Paul (Journal article; Peer reviewed, 2023)
      We assess the contribution of flow over the Northeast Greenland Shelf (NEGS) to the total freshwater transport (FWT) through the Fram Strait. We analyze available observations since 2013 consisting of hydrographic sections, ...

    • The Departure from Mixed-Layer Similarity During the Afternoon Decay of Turbulence in the Free-Convective Boundary Layer: Results from Large-Eddy Simulations 

      Elguernaoui, Omar; Reuder, Joachim; Li, Dan; Maronga, Bjørn; Bakhoday Paskyabi, Mostafa; Wolf, Tobias; Esau, Igor (Journal article; Peer reviewed, 2023)
      This study analyses the departure of the velocity-variances profiles from their quasi-steady state described by the mixed-layer similarity, using large-eddy simulations with different prescribed shapes and time scales of ...

    • Wind-driven upwelling of iron sustains dense blooms and food webs in the eastern Weddell Gyre 

      Moreau, Sebastian; Hattermann, Tore; de Steur, Laura; Kauko, Hanna Maria; Ahonen, Heidi; Ardelan, Murat van; Assmy, Philipp; Chierici, Melissa; Descamps, Sebastien; Dinter, Tilman; Falkenhaug, Tone; Fransson, Agneta; Grønningsæter, Eirik; Hallfredsson, Elvar Halldor; Huhn, Oliver; Lebrun, Anais; Lowther, Andrew; Lübcker, Nico; Monteiro, Pedro; Peeken, Ilka; Roychoudhury, Alakendra; Różańska, Magdalena; Ryan-Keogh, Thomas; Sanchez Puerto, Nicolas; Singh, Asmita; Simonsen, Jan Henrik; Steiger, Nadine; Thomalla, Sandy J.; van Tonder, Andre; Wiktor, Josef M; Steen, Harald (Journal article; Peer reviewed, 2023)
      The Southern Ocean is a major sink of anthropogenic CO2 and an important foraging area for top trophic level consumers. However, iron limitation sets an upper limit to primary productivity. Here we report on a considerably ...

    • Impact of sea ice transport on Beaufort Gyre liquid freshwater content 

      Cornish, Sam B.; Muilwijk, Morven; Scott, Jeffery R.; Marson, Juliana M.; Myers, Paul G.; Zhang, Wenhao; Wang, Qiang; Kostov, Yavor; Johnson, Helen L.; Marshall, John (Journal article; Peer reviewed, 2023)
      The Arctic Ocean’s Beaufort Gyre (BG) is a wind-driven reservoir of relatively fresh seawater, situated beneath time-mean anticyclonic atmospheric circulation, and is covered by mobile pack ice for most of the year. Liquid ...

    • Future strengthening of the Nordic Seas overturning circulation 

      Årthun, Marius; Asbjørnsen, Helene; Chafik, Léon; Johnson, Helen L.; Våge, Kjetil (Journal article; Peer reviewed, 2023)
      The overturning circulation in the Nordic Seas involves the transformation of warm Atlantic waters into cold, dense overflows. These overflow waters return to the North Atlantic and form the headwaters to the deep limb of ...

    • Estimation of groundwater storage loss for the Indian Ganga Basin using multiple lines of evidence 

      Janardhanan, Sreekanth; Nair, Akhilesh Sivaraman; Indu, J.; Pagendam, Dan; Kaushika, G.S. (Journal article; Peer reviewed, 2023)
      We used remote sensing data, field observations and numerical groundwater modelling to investigate long-term groundwater storage losses in the regional aquifer of the Ganga Basin in India. This comprised trend analysis for ...

    • A dataset of direct observations of sea ice drift and waves in ice 

      Rabault, Jean; Müller, Malte; Voermans, Joey; Brazhnikov, Dmitry; Turnbull, Ian; Marchenko, Aleksey; Biuw, Martin; Nose, Takehiko; Waseda, Takuji; Johansson, Malin; Breivik, Øyvind; Sutherland, Graig; Hole, Lars Robert; Johnson, Mark; Jensen, Atle; Gundersen, Olav; Kristoffersen, Yngve; Babanin, Alexander; Tedesco, Paulina Souza; Christensen, Kai Håkon; Kristiansen, Martin; Hope, Gaute; Kodaira, Tsubasa; Martins de Aguiar, Victor Cesar; Taelman, Catherine Cecilia A; Quigley, Cornelius Patrick; Filchuk, Kirill; Mahoney, Andrew R. (Journal article; Peer reviewed, 2023)
      Variability in sea ice conditions, combined with strong couplings to the atmosphere and the ocean, lead to a broad range of complex sea ice dynamics. More in-situ measurements are needed to better identify the phenomena ...

    • Knowledge Gaps and Impact of Future Satellite Missions to Facilitate Monitoring of Changes in the Arctic Ocean 

      Lucas, Sylvain; Johannessen, Johnny Andre; Cancet, Mathilde; Pettersson, Lasse H; Esau, Igor; Rheinlænder, Jonathan Winfield; Ardhuin, Fabrice; Chapron, Bertrand; Korosov, Anton; Collard, Fabrice; Herlédan, Sylvain; Olason, Einar; Ferrari, Ramiro; Fouchet, Ergane; Donlon, Craig (Journal article; Peer reviewed, 2023)
      Polar-orbiting satellite observations are of fundamental importance to explore the main scientific challenges in the Arctic Ocean, as they provide information on bio-geo-physical variables with a denser spatial and temporal ...

    • An Intensity and Size Phase Space for Tropical Cyclone Structure and Evolution 

      Casas, Eleanor; Tao, Dandan; Bell, Michael (Journal article; Peer reviewed, 2023)
      Intensity and size are important to characterize a tropical cyclone (TC), but there are a wide variety of ways that both metrics are defined. TC intensity can refer to either a maximum sustained wind speed at some height ...

    • Observational evidence for on-shelf heat transport driven by dense water export in the Weddell Sea 

      Darelius, Elin Maria K.; Daae, Kjersti; Dundas, Vår Iren Hjorth; Fer, Ilker; Hellmer, Hartmut H.; Janout, Markus; Nicholls, Keith W.; Sallée, Jean-Bapiste; Østerhus, Svein (Journal article; Peer reviewed, 2023)
      The transport of oceanic heat towards the Antarctic continental margin is central to the mass balance of the Antarctic Ice Sheet. Recent modeling efforts challenge our view on where and how the on-shelf heat flux occurs, ...

    • Warming beneath an East Antarctic ice shelf due to increased subpolar westerlies and reduced sea ice 

      Lauber, Julius; Hattermann, Tore; de Steur, Laura; Chiche, Elin Maria Kristina Darelius; Auger, Matthis; Nøst, Ole Anders; Moholdt, Geir (Journal article; Peer reviewed, 2023)
      Understanding how climate change influences ocean-driven melting of the Antarctic ice shelves is one of the greatest challenges for projecting future sea level rise. The East Antarctic ice shelf cavities host cold water ...