• Rapid sea ice changes in the future Barents Sea 

      Rieke, Ole; Årthun, Marius; Dörr, Jakob Simon (Journal article; Peer reviewed, 2023)
      Observed and future winter Arctic sea ice loss is strongest in the Barents Sea. However, the anthropogenic signal of the sea ice decline is superimposed by pronounced internal variability that represents a large source of ...
    • Coupled atmosphere–ocean observations of a cold-air outbreak and its impact on the Iceland Sea 

      Renfrew, Ian A.; Huang, Jie; Semper, Stefanie; Barrell, Christopher; Terpstra, Annick; Pickart, Robert S.; Våge, Kjetil; Elvidge, Andrew D.; Spengler, Thomas; Strehl, Anna-Marie; Weiss, Alexandra (Journal article; Peer reviewed, 2023)
      Marine cold-air outbreaks (CAOs) are vigorous equatorward excursions of cold air over the ocean, responsible for the majority of wintertime oceanic heat loss from the subpolar seas of the North Atlantic. However, the impact ...
    • Early detection of anthropogenic climate change signals in the ocean interior 

      Tjiputra, Jerry; Negrel, Jean; Olsen, Are (Journal article; Peer reviewed, 2023)
      Robust detection of anthropogenic climate change is crucial to: (i) improve our understanding of Earth system responses to external forcing, (ii) reduce uncertainty in future climate projections, and (iii) develop efficient ...
    • Reconciling conflicting evidence for the cause of the observed early 21st century Eurasian cooling 

      Outten, Stephen; Li, Camille; King, Martin Peter; Suo, Lingling; Siew, Yu Feng; Cheung, Hoffman; Davy, Richard; Dunn-Sigouin, Etienne; Furevik, Tore; He, Shengping; Madonna, Erica; Sobolowski, Stefan Pieter; Spengler, Thomas; Woollings, Tim (Journal article; Peer reviewed, 2023)
      It is now well established that the Arctic is warming at a faster rate than the global average. This warming, which has been accompanied by a dramatic decline in sea ice, has been linked to cooling over the Eurasian ...
    • Phytoplankton abundance in the Barents Sea is predictable up to five years in advance 

      Fransner, Sara Filippa Krusmynta; Olsen, Are; Årthun, Marius; Counillon, Francois Stephane; Tjiputra, Jerry; Samuelsen, Annette; Keenlyside, Noel Sebastian (Journal article; Peer reviewed, 2023)
      The Barents Sea is a highly biologically productive Arctic shelf sea with several commercially important fish stocks. Interannual-to-decadal predictions of its ecosystem would therefore be valuable for marine resource ...
    • Trivial gain of downscaling in future projections of higher trophic levels in the Nordic and Barents Seas 

      Nilsen, Ina; Fransner, Sara Filippa Krusmynta; Olsen, Are; Tjiputra, Jerry; Hordoir, Robinson; Hansen, Cecilie (Journal article; Peer reviewed, 2023)
      Downscaling physical forcing from global climate models is both time consuming and labor demanding and can delay or limit the physical forcing available for regional marine ecosystem modelers. Earlier studies have shown ...
    • Sudden, local temperature increase above the continental slope in the southern Weddell Sea, Antarctica 

      Darelius, Elin Maria K.; Dundas, Vår Iren Hjorth; Janout, Markus; Tippenhauer, Sandra (Journal article; Peer reviewed, 2023)
      Around most of Antarctica, the Circumpolar Deep Water (CDW) shows a warming trend. At the same time, the thermocline is shoaling, thereby increasing the potential for CDW to enter the shallow continental shelves and ...
    • Pan-Atlantic decadal climate oscillation linked to ocean circulation 

      Nnamchi, Hyacinth C.; Farneti, Riccardo; Keenlyside, Noel Sebastian; Kucharski, Fred; Latif, Mojib; Reintges, Annika; Martin, Thomas (Journal article; Peer reviewed, 2023)
      Atlantic climate displays an oscillatory mode at a period of 10–15 years described as pan-Atlantic decadal oscillation. Prevailing theories on the mode are based on thermodynamic air-sea interactions and the role of ocean ...
    • Upper tropospheric cloud-radiation interaction induced by monsoon surge over the South China Sea 

      Koseki, Shunya; Fonseca, Ricardo; Koh, Tieh-Yong; Teo, Chee-Kiat (Journal article; Peer reviewed, 2023)
      We have investigated cloud formation over the South China Sea in the upper troposphere and its impacts on the radiation budget of the troposphere and ocean surface under monsoon surges using satellite and reanalysis products ...
    • Model-simulated hydroclimate in the East Asian summer monsoon region during past and future climate: a pilot study with a moisture source perspective 

      Fremme, Astrid Kristine; Hezel, Paul; Seland, Øyvind; Sodemann, Harald (Journal article; Peer reviewed, 2023)
      Here we present a pilot study of the sensitivity of summer monsoon precipitation in the Yangtze River Valley (YRV; 110–122∘ E and 27–33∘ N, eastern China) to climatic boundary conditions from the Last Glacial Maximum (LGM), ...
    • Winter Vertical Diffusion Rates in the Arctic Ocean, Estimated From 7Be Measurements and Dissipation Rate Profiles 

      Schulz, K.; Kadko, D.; Mohrholz, V.; Stephens, M.; Fer, Ilker (Journal article; Peer reviewed, 2023)
      Ocean turbulent mixing is a key process affecting the uptake and redistribution of heat, carbon, nutrients, oxygen and other dissolved gasses. Vertical turbulent diffusivity sets the rates of water mass transformations and ...
    • Pacific oceanic front amplifies the impact of Atlantic oceanic front on North Atlantic blocking 

      Cheung, Ho Nam; Omrani, Nour-Eddine; Ogawa, Fumiaki; Keenlyside, Noel Sebastian; Nakamura, Hisashi; Zhou, Wen (Journal article; Peer reviewed, 2023)
      Atmospheric blocking is a crucial driver of extreme weather events, but its climatological frequency is largely underestimated in state-of-the-art climate models, especially around the North Atlantic. While air-sea interaction ...
    • A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet 

      Zuhr, Alexandra M.; Wahl, Sonja; Steen-Larsen, Hans Christian; Hörhold, Maria; Meyer, Hanno; Laepple, Thomas (Journal article; Peer reviewed, 2023)
      The stable water isotopic composition in firn and ice cores provides valuable information on past climatic conditions. Because of uneven accumulation and post-depositional modifications on local spatial scales up to hundreds ...
    • Decadal Predictability of the North Atlantic Eddy-Driven Jet in Winter 

      Marcheggiani, Andrea; Robson, Jon; Monerie, Paul-Arthur; Bracegirdle, Thomas J.; Smith, Doug (Journal article; Peer reviewed, 2023)
      This paper expands on work showing that the winter North Atlantic Oscillation (NAO) is predictable on decadal timescales to quantify the skill in capturing the North Atlantic eddy-driven jet's location and speed. By focusing ...
    • Disentangling the impact of Atlantic Niño on sea-air CO2 flux 

      Koseki, Shunya; Tjiputra, Jerry; Fransner, Sara Filippa Krusmynta; Crespo, Lander Rodriguez; Keenlyside, Noel Sebastian (Journal article; Peer reviewed, 2023)
      Atlantic Niño is a major tropical interannual climate variability mode of the sea surface temperature (SST) that occurs during boreal summer and shares many similarities with the tropical Pacific El Niño. Although the ...
    • Formation and pathways of dense water in the Nordic Seas based on a regional inversion 

      Brakstad, Ailin Dale; Gebbie, Geoffrey; Våge, Kjetil; Jeansson, Emil; Olafsdóttir, Solveig R. (Journal article; Peer reviewed, 2023)
      Dense waters formed in the Nordic Seas spill across gaps in the Greenland-Scotland Ridge into the abyss of the North Atlantic to feed the lower limb of the Atlantic Meridional Overturning Circulation. The overflow water ...
    • Framework for an Ocean-Connected Supermodel of the Earth System 

      Counillon, Francois Stephane; Keenlyside, Noel Sebastian; Wang, Shuo; Devilliers, Marion; Gupta, Alok Kumar; Koseki, Shunya; Shen, Mao-Lin (Journal article; Peer reviewed, 2023)
      A supermodel connects different models interactively so that their systematic errors compensate and achieve a model with superior performance. It differs from the standard non-interactive multi-model ensembles (NI), which ...
    • A modular field system for near-surface, vertical profiling of the atmospheric composition in harsh environments using cavity ring-down spectroscopy 

      Seidl, Andrew Walter; Sodemann, Harald; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2023)
      Cavity ring-down spectroscopy (CRDS) has allowed for increasingly widespread, in situ observations of trace gases, including the stable isotopic composition of water vapor. However, gathering observations in harsh environments ...
    • 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 ...