Blar i Articles på forfatter "Skagseth, Øystein"

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    • A brief history of climate – the northern seas from the Last Glacial Maximum to global warming 

      Eldevik, Tor; Risebrobakken, Bjørg; Bjune, Anne Elisabeth; Andersson, Carin; Birks, Harry John Betteley; Dokken, Trond Martin; Drange, Helge; Glessmer, Mirjam Sophia; Li, Camille; Nilsen, Jan Even Øie; Otterå, Odd Helge; Richter, Kristin; Skagseth, Øystein (Journal article; Peer reviewed, 2014-08-06)
      The understanding of climate and climate change is fundamentally concerned with two things: a well-defined and sufficiently complete climate record to be explained, for example of observed temperature, and a relevant ...

    • A Framework for the Development, Design and Implementation of a Sustained Arctic Ocean Observing System 

      Lee, Craig M.; Starkweather, Sandy; Eicken, Hajo; Timmermans, Mary-Louise; Wilkinson, Jeremy; Sandven, Stein; Dukhovskoy, Dmitry; Gerland, Sebastian; Grebmeier, Jacqueline; Intrieri, Janet M.; Kang, Sung-Ho; McCammon, Molly; Nguyen, An T.; Polyakov, Igor; Rabe, Benjamin; Sagen, Hanne; Seeyave, Sophie; Volkov, Denis; Beszczynska-Möller, Agnieszka; Chafik, Léon; Dzieciuch, Matthew; Goni, Gustavo; Hamre, Torill; King, Andrew Luke; Olsen, Are; Raj, Roshin Pappukutty; Rossby, Thomas; Skagseth, Øystein; Søiland, Henrik; Sørensen, Kai (Peer reviewed; Journal article, 2019)
      Rapid Arctic warming drives profound change in the marine environment that have significant socio-economic impacts within the Arctic and beyond, including climate and weather hazards, food security, transportation, ...

    • An appraisal of the drivers of Norwegian spring‐spawning herring (Clupea harengus) recruitment 

      Garcia, Théo; Planque, Benjamin; Arneberg, Per; Bogstad, Bjarte; Skagseth, Øystein; Tiedemann, Maik (Peer reviewed; Journal article, 2020)

    • Analysis of the Arctic System for Freshwater Cycle Intensification: Observations and Expectations 

      Rawlins, Michael A.; Steele, Michael; Holland, Marika H.; Adam, Jennifer C.; Cherry, Jessica E.; Francis, Jennifer A.; Groisman, Pavel Ya; Hinzman, Larry D.; Huntington, Thomas G.; Kane, Douglas L.; Kimball, John S.; Kwok, Ron; Lammers, Richard B.; Lee, Craig M.; Lettenmaier, Dennis P.; McDonald, Kyle C.; Podest, Erika; Pundsack, Jonathan W.; Rudels, Bert; Serreze, Mark C.; Shiklomanov, Alexander; Skagseth, Øystein; Troy, Tara J.; Vörösmarty, Charles J.; Wensnahan, Mark; Wood, Eric F.; Woodgate, Rebecca; Yang, Daqing; Zhang, Ke; Zhang, Tingjun (Journal article; Peer reviewed, 2010)
      Hydrologic cycle intensification is an expected manifestation of a warming climate. Although positive trends in several global average quantities have been reported, no previous studies have documented broad intensification ...

    • Arctic and Atlantic waters in the Norwegian Basin, between year variability and potential ecosystem implications 

      Skagseth, Øystein; Søiland, Henrik; Mork, Kjell Arne; Gundersen, Kjell; Broms, Cecilie; Hathun, Hjalmar; Kristiansen, Inga; Larsen, Karin M H; Petursdottir, Hildur (Peer reviewed; Journal article, 2022)
      The ocean climate of the southern Norwegian Sea - the Norwegian Basin - is largely set by the relative amount of Atlantic Water in the eastern and Arctic Water in the western region. Here we utilized hydrographic data from ...

    • Characteristics of the Norwegian Coastal Current during years with high recruitment of Norwegian spring spawning herring (Clupea harengus L.) 

      Skagseth, Øystein; Slotte, Aril; Stenevik, Erling Kåre; Nash, Richard David Marriott (Journal article; Peer reviewed, 2015-12-04)
      Norwegian Spring Spawning herring (NSSH) Clupea harengus L. spawn on coastal banks along the west coast of Norway. The larvae are generally transported northward in the Norwegian Coastal Current (NCC) with many individuals ...

    • Climate-Relevant Ocean Transport Measurements in the Atlantic and Arctic Oceans 

      Berx, Barbara; Volkov, Denis; Baehr, Johanna; Baringer, Molly O.; Burmeister, Kristin; Cunningham, Stuart; De Jong, Marieke Femke; de Steur, Laura; Dong, Shenfu; Frajka-Williams, Eleanor; Goni, Gustavo J.; Holliday, N. Penny; Hummels, Rebecca; Ingvaldsen, Randi Brunvær; Jochumsen, Kerstin; Johns, William; Jónsson, Steingrímur; Kieke, Dagmar; Krishfield, Richard; Lankhorst, Matthias; Larsen, Karin Margetha H.; Le Bras, Isabela; Lee, Craig M.; Li, Feili; Macrander, Andreas; McCarthy, Gerard; Moat, Ben I.; Moritz, Martin; Perez, Renellys C.; Polyakov, Igor; Proshutinsky, Andrey; Rabe, Berit; Rhein, Monika; Schmid, Claudia; Skagseth, Øystein; Smeed, David A.; Timmermans, Mary-Louise; von Appen, Wilken-Jon; Williams, Bill; Woodgate, Rebecca; Yashayaev, Igor; Brandt, Peter; Lozier, Susan; Mertens, Christian; Karstensen, Johannes (Peer reviewed; Journal article, 2021)
      Ocean circulation redistributes heat, freshwater, carbon, and nutrients all around the globe. Because of their importance in regulating climate, weather, extreme events, sea level, fisheries, and ecosystems, large-scale ...

    • Decadal trends in ocean acidification from the Ocean Weather Station M in the Norwegian Sea 

      Skjelvan, Ingunn; Lauvset, Siv Kari; Johannessen, Truls; Gundersen, Kjell; Skagseth, Øystein (Peer reviewed; Journal article, 2022)
      The Ocean Weather Station M (OWSM) is situated at a fixed position in the Norwegian Sea, one of the major basins of the Nordic Seas, which represents an important area for uptake of atmospheric CO2 as well as deep water ...

    • Diurnal tides on the Barents Sea continental slope 

      Skardhamar, Jofrid; Skagseth, Øystein; Albretsen, Jon (Journal article; Peer reviewed, 2014-12-10)
      Measurements of diurnal tides over the continental slope between the Norwegian Sea and the Barents Sea shelf are presented. Numerical 3D simulations, in agreement with field data, show strong cross-slope velocities and ...

    • Ecological regime shift in the Northeast Atlantic Ocean revealed from the unprecedented reduction in marine growth of Atlantic salmon 

      Vollset, Knut; Urdal, Kurt; Utne, Kjell Rong; Thorstad, Eva Bonsak; Sægrov, Harald; Raunsgard, Astrid; Skagseth, Øystein; Lennox, Robert; Østborg, Gunnel Marie; Ugedal, Ola; Jensen, Arne Johan; Bolstad, Geir Hysing; Fiske, Peder (Peer reviewed; Journal article, 2022)
      Ecological regime shifts are abrupt changes in the structure and function of ecosystems that persist over time, but evidence of contemporary regime shifts are rare. Historical scale data from 52,384 individual wild Atlantic ...

    • Fluctuating Atlantic inflows modulate Arctic atlantification 

      Polyakov, Igor V.; Ingvaldsen, Randi Brunvær; Pnyushkov, Andrey V.; Bhatt, Uma S.; Francis, Jennifer A.; Janout, Markus; Kwok, Ronald; Skagseth, Øystein (Peer reviewed; Journal article, 2023)
      Enhanced warm, salty subarctic inflows drive high-latitude atlantification, which weakens oceanic stratification, amplifies heat fluxes, and reduces sea ice. In this work, we show that the atmospheric Arctic Dipole (AD) ...

    • Heat content in the Norwegian Sea, 1995–2010 

      Skagseth, Øystein; Mork, Kjell Arne (Journal article; Peer reviewed, 2012-02-26)
      Spatio-temporal hydrographic data from the Nordic Seas during spring over the period 1995–2010 were investigated in terms of the relative heat content (RHC) above the density surface σt = 27.9, chosen to capture the changes ...

    • Heat in the Barents Sea: transport, storage, and surface fluxes 

      Smedsrud, L.H.; Ingvaldsen, Randi; Nilsen, Jan Even Øie; Skagseth, Øystein (Journal article; Peer reviewed, 2010)
      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 ...

    • Impacts of a Changing Ecosystem on the Feeding and Feeding Conditions for Atlantic Salmon During the First Months at Sea 

      Utne, Kjell Rong; Skagseth, Øystein; Wennevik, Vidar; Broms, Cecilie; Melle, Webjørn Raunsgård; Thorstad, Eva Bonsak (Peer reviewed; Journal article, 2022)
      During the last decades, many wild Atlantic salmon populations have declined dramatically. One hypothesis for an observed reduction in salmon marine growth and survival is reduced abundance of prey. However, the effect of ...

    • Mechanisms of Ocean Heat Anomalies in the Norwegian Sea 

      Asbjørnsen, Helene; Årthun, Marius; Skagseth, Øystein; Eldevik, Tor (Journal article; Peer reviewed, 2019)
      Ocean heat content in the Norwegian Sea exhibits pronounced variability on interannual to decadal time scales. These ocean heat anomalies are known to influence Arctic sea ice extent, marine ecosystems, and continental ...

    • Mechanisms underlying recent Arctic atlantification 

      Asbjørnsen, Helene; Årthun, Marius; Skagseth, Øystein; Eldevik, Tor (Peer reviewed; Journal article, 2020)
      Recent warming and reduced sea ice concentrations in the Atlantic sector of the Arctic Ocean are the main signatures of ongoing Arctic “Atlantification.” The mechanisms driving the warming trends are nevertheless still ...

    • 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 (Peer reviewed; Journal article, 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 ...

    • One mechanism contributing to co-variability of the Atlantic inflow branches to the Arctic 

      Lien, Vidar Surén; Vikebø, Frode Bendiksen; Skagseth, Øystein (Peer reviewed; Journal article, 2013)

    • One mechanism contributing to co-variability of the Atlantic inflow branches to the Arctic 

      Lien, Vidar S.; Vikebø, Frode B.; Skagseth, Øystein (Journal article; Peer reviewed, 2013-02-12)
      The two-branched inflow of warm and saline Atlantic Water to the Arctic is the major contributor of oceanic heat to the Arctic climate system. However, while the Atlantic Water entering the Arctic through the Fram Strait ...

    • Predicting the Distribution of Indicator Taxa of Vulnerable Marine Ecosystems in the Arctic and Sub-arctic Waters of the Nordic Seas 

      Burgos, Julian; Buhl-Mortensen, Lene; Buhl-Mortensen, Pål; Olafsdottir, Steinunn Hilma; Steingrund, Petur; Ragnarsson, Stefan Aki; Skagseth, Øystein (Peer reviewed; Journal article, 2020)