• Barents Sea ice cover reflects Atlantic inflow 

      Årthun, Marius; Eldevik, Tor; Smedsrud, Lars Henrik; Skagseth, Øystein (Journal article, 2011)
      The recent Arctic winter sea-ice retreat is most pronounced in the Barents Sea. Using available observations of the Atlantic inflow to the Barents Sea and results from a regional ice-ocean model we assess the role of ...
    • Consequences of future increased Arctic runoff on Arctic Ocean stratification, circulation, and sea ice cover 

      Nummelin, Aleksi; Ilicak, Mehmet; Li, Camille; Smedsrud, Lars Henrik (Peer reviewed; Journal article, 2016-01-21)
      The Arctic Ocean has important freshwater sources including river runoff, low evaporation, and exchange with the Pacific Ocean. In the future, we expect even larger freshwater input as the global hydrological cycle ...
    • Dense water formation and circulation in the Barents Sea 

      Årthun, Marius; Ingvaldsen, Randi; Smedsrud, Lars Henrik; Schrum, Corinna (Peer reviewed; Journal article, 2011)
      Dense water masses from Arctic shelf seas are an important part of the Arctic thermohaline system. We present previously unpublished observations from shallow banks in the Barents Sea, which reveal large interannual ...
    • Eddy-resolving simulations of the Fimbul Ice Shelf cavity circulation: Basal melting and exchange with open ocean 

      Hattermann, Tore; Smedsrud, Lars Henrik; Nøst, Ole Anders; Lilly, Jonathan M.; Galton-Fenzi, Ben K. (Peer reviewed; Journal article, 2014-10)
      Melting at the base of floating ice shelves is a dominant term in the overall Antarctic mass budget. This study applies a high-resolution regional ice shelf/ocean model, constrained by observations, to (i) quantify present ...
    • Export of ice sheet meltwater from Upernavik fjord, West Greenland 

      Muilwijk, Morven; Straneo, Fiammetta; Slater, Donald A.; Smedsrud, Lars Henrik; Holte, James; Wood, Michael; Andresen, Camilla S.; Harden, Ben (Journal article; Peer reviewed, 2022)
      Meltwater from Greenland is an important freshwater source for the North Atlantic Ocean, released into the ocean at the head of fjords in the form of runoff, submarine melt, and icebergs. The meltwater release gives rise ...
    • Frazil ice formation in ice shelf water plume 

      Smedsrud, Lars Henrik; Jenkins, Adrian (Journal article, 2004-03-17)
      We present a model for the growth of frazil ice crystals and their accumulation as marine ice at the base of Antarctic ice shelves. The model describes the flow of buoyant water upward along the ice shelf base and includes ...
    • Heat in the Barents Sea: Transport, storage, and surface fluxes 

      Smedsrud, Lars Henrik; Ingvaldsen, Randi; Nilsen, Jan Even Øie; Skagseth, Øystein (Journal article, 2010-01-11)
      A column model is set up for the Barents Sea to explore sensitivity of surface fluxes and heat storage from varying ocean heat transport. Mean monthly ocean transport and atmospheric forcing are synthesised and force the ...
    • How much arctic fresh water participates in the subpolar overturning circulation? 

      Le Bras, Isabela; Straneo, Fiamma; Muilwijk, Morven; Smedsrud, Lars Henrik; Li, Feili; Susan Lozier, Lozier; Penny Holliday, Holliday (Journal article; Peer reviewed, 2021)
      Fresh Arctic waters flowing into the Atlantic are thought to have two primary fates. They may be mixed into the deep ocean as part of the overturning circulation, or flow alongside regions of deep water formation without ...
    • Internal Ocean Dynamics Control the Long-Term Evolution of Weddell Sea Polynya Activity 

      Rheinlænder, Jonathan Winfield; Smedsrud, Lars Henrik; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2021)
      Open-ocean polynyas effectively couple the ocean and atmosphere through large ice-free areas within the sea-ice cover, release vast quantities of oceanic heat, and impact deep ocean ventilation. Changes in polynya activity, ...
    • Loss of sea ice during winter north of Svalbard 

      Onarheim, Ingrid Husøy; Smedsrud, Lars Henrik; Ingvaldsen, Randi; Nilsen, Frank (Peer reviewed; Journal article, 2014-06-05)
      Sea ice loss in the Arctic Ocean has up to now been strongest during summer. In contrast, the sea ice concentration north of Svalbard has experienced a larger decline during winter since 1979. The trend in winter ice area ...
    • Modeling ocean processes below Fimbulisen, Antarctica 

      Smedsrud, Lars Henrik; Jenkins, Adrian; Holland, David M.; Nøst, Ole A. (Peer reviewed; Journal article, 2006-01-18)
      Model simulations of circulation and melting beneath Fimbulisen, Antarctica, obtained using an isopycnic coordinate ocean model, are presented. Model results compare well with available observations of currents and hydrography ...
    • Nordic Seas Heat Loss, Atlantic Inflow, and Arctic Sea Ice cover over the last century 

      Smedsrud, Lars Henrik; Muilwijk, Morven; Eldevik, Tor; Årthun, Marius; Brakstad, Ailin; Madonna, Erica; Lauvset, Siv Kari; Spensberger, Clemens; Born, Andreas; Drange, Helge; Jeansson, Emil; Li, Camille; Olsen, Are; Skagseth, Øystein; Slater, Donald; Straneo, Fiammetta; Våge, Kjetil (Journal article; Peer reviewed, 2021)
      Poleward ocean heat transport is a key process in the earth system. We detail and review the northward Atlantic Water (AW) flow, Arctic Ocean heat transport, and heat loss to the atmosphere since 1900 in relation to sea ...
    • Observed Changes in the Arctic Freshwater Outflow in Fram Strait 

      Karpouzoglou, Theodoros; de Steur, Laura; Smedsrud, Lars Henrik; Sumata, Hiroshi (Journal article; Peer reviewed, 2022)
      We have updated time series of liquid fresh water transport (FWT) in the East Greenland Current (EGC) in the western Fram Strait with mooring observations since 2015. Novel data have been used to correct earlier estimates ...
    • Recent and future changes of the Arctic sea-ice cover 

      Smedsrud, Lars Henrik; Sorteberg, Asgeir; Kloster, Kjell (Peer reviewed; Journal article, 2008)
      The present and future state of the Arctic sea ice cover is explored using new observations and a coupled one dimensional air–sea–ice model. Updated satellite observations of Fram Strait ice-area export show an increase ...
    • Recent wind driven high sea ice area export in the Fram Strait contributes to Arctic sea ice decline 

      Smedsrud, Lars Henrik; Sirevaag, Anders; Kloster, Kjell; Sorteberg, Asgeir; Sandven, Stein (Peer reviewed; Journal article, 2011-10-14)
      Arctic sea ice area has been decreasing for the past two decades. Apart from melting, the southward drift through Fram Strait is the main ice loss mechanism. We present high resolution sea ice drift data across 79° N from ...
    • Response of Arctic Ocean stratification to changing river runoff in a column model 

      Nummelin, Aleksi; Li, Camille; Smedsrud, Lars Henrik (Peer reviewed; Journal article, 2015-04-07)
      A one-dimensional model of the atmosphere-ice-ocean column is used to study the effects of changing river runoff to the Arctic Ocean. River runoff is the largest contributor of freshwater to the Arctic and is expected to ...
    • Skillful prediction of Barents Sea ice cover 

      Onarheim, Ingrid Husøy; Eldevik, Tor; Årthun, Marius; Ingvaldsen, Randi; Smedsrud, Lars Henrik (Peer reviewed; Journal article, 2015-07-08)
      A main concern of present climate change is the Arctic sea ice cover. In wintertime, its observed variability is largely carried by the Barents Sea. Here we propose and evaluate a simple quantitative and prognostic framework ...
    • Uncertainties in Arctic sea ice thickness and volume: new estimates and implications for trends 

      Zygmuntowska, Marta; Rampal, Pierre; Ivanova, Natalia; Smedsrud, Lars Henrik (Peer reviewed; Journal article, 2014-04-22)
      Sea ice volume has decreased in the last decades, evoked by changes in sea ice area and thickness. Estimates of sea ice area and thickness rely on a number of geophysical parameters which introduce large uncertainties. To ...
    • Warm Atlantic water explains observed sea ice melt rates north of Svalbard 

      Duarte, Pedro; Sundfjord, Arild; Meyer, Amelie; Hudson, Stephen; Spreen, Gunnar; Smedsrud, Lars Henrik (Journal article; Peer reviewed, 2020)
      Warm Atlantic water (AW) that flows northward along the Svalbard west coast is thought to transport enough heat to melt regional Arctic sea ice effectively. Despite this common assumption, quantitative requirements necessary ...