Blar i Geophysical Institute på emneord "VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452"

Viser treff 1-20 av 46

    • Arctic sea ice and Eurasian climate: A review 

      Gao, Yongqi; Sun, Jianqi; Li, Fei; He, Shengping; Sandven, Stein; Yan, Qing; Zhang, Zhongshi; Lohmann, Katja; Keenlyside, Noel; Furevik, Tore; Suo, Lingling (Peer reviewed; Journal article, 2014-11-28)
      The Arctic plays a fundamental role in the climate system and has shown significant climate change in recent decades, including the Arctic warming and decline of Arctic sea-ice extent and thickness. In contrast to the ...

    • Atlantic water transformation along its poleward pathway across the Nordic Seas 

      Bosse, Anthony; Fer, Ilker; Søiland, Henrik; Thomas, Rossby (Peer reviewed; Journal article, 2018-08-23)
      The warm and salty Atlantic Water is substantially modified along its poleward transit across the Nordic Seas, where it reaches deeper isopycnals. In particular, the Lofoten Basin, exposed to intense air‐sea interactions, ...

    • Characteristics and Transformation of Pacific Winter Water on the Chukchi Sea Shelf in Late Spring 

      Pacini, Astrid; Moore, George William Kent; Pickart, Robert S.; Nobre, Carolina; Bahr, Frank; Våge, Kjetil; Arrigo, Kevin R. (Peer reviewed; Journal article, 2019)
      Data from a late spring survey of the northeast Chukchi Sea are used to investigate various aspects of newly ventilated winter water (NVWW). More than 96% of the water sampled on the shelf was NVWW, the saltiest (densest) ...

    • Decreasing intensity of open-ocean convection in the Greenland and Iceland seas 

      Moore, George William Kent; Våge, Kjetil; Pickart, Robert S.; Renfrew, Ian A. (Peer reviewed; Journal article, 2015)
      The air–sea transfer of heat and fresh water plays a critical role in the global climate system1. This is particularly true for the Greenland and Iceland seas, where these fluxes drive ocean convection that contributes to ...

    • Dissipation measurements using temperature microstructure from an underwater glider 

      Peterson, Algot Kristoffer; Fer, Ilker (Peer reviewed; Journal article, 2014-09)
      Microstructure measurements of temperature and current shear are made using an autonomous underwater glider. The glider is equipped with fast-response thermistors and airfoil shear probes, providing measurements of dissipation ...

    • The dissipation of kinetic energy in the Lofoten Basin Eddy 

      Fer, Ilker; Bosse, Anthony; Ferron, Bruno; Bouruet-Aubertot, Pascale (Peer reviewed; Journal article, 2018-06)
      Ocean microstructure, current, and hydrography observations from June 2016 are used to characterize the turbulence structure of the Lofoten Basin eddy (LBE), a long-lived anticyclone in the Norwegian Sea. The LBE had an ...

    • Dissipation of turbulent kinetic energy inferred from Seagliders: an application to the eastern Nordic Seas overflows 

      Beaird, Nicholas; Fer, Ilker; Rhines, Peter B.; Eriksen, Charles (Peer reviewed; Journal article, 2012-12)
      Turbulent mixing is an important process controlling the descent rate, water mass modification, and volume transport augmentation due to entrainment in the dense overflows across the Greenland–Scotland Ridge. These overflows, ...

    • 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 ...

    • The European Climate Research Alliance (ECRA): Collaboration from bottom-up 

      Hoke, Winfried; Swierczynski, Tina; Braesicke, Peter; Lochte, Karin; Shaffrey, Len; Drews, Martin; Gregow, Hilppa; Ludwig, Ralf; Nilsen, Jan Even Øie; Palazzi, Elisa; Sannino, Gianmaria; Smedsrud, Lars H. (Peer reviewed; Journal article, 2019-01-17)
      The European Climate Research Alliance (ECRA) is an association of leading European research institutions in the field of climate research (http://www.ecra-climate.eu/, last access: 6 December 2018). ECRA is a bottom-up ...

    • Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry 

      Jeansson, Emil; Bellerby, Richard; Skjelvan, Ingunn; Frigstad, Helene; Ólafsdóttir, Sólveig R.; Ólafsson, Jón Hjaltalín (Peer reviewed; Journal article, 2015-02-12)
      This study evaluates long-term mean fluxes of carbon and nutrients to the upper 100 m of the Iceland Sea. The study utilises hydro-chemical data from the Iceland Sea time series station (68.00° N, 12.67° W), for the years ...

    • Global carbon budget 2013 

      Le Quéré, Corinne; Peters, Glen Philip; Andres, Robert J.; Andrew, Robbie; Boden, Thomas A.; Ciais, Philippe; Friedlingstein, Pierre; Houghton, Richard A.; Marland, Gregg; Moriarty, Roisin; Sitch, Stephen; Tans, Pieter; Arneth, Almut; Arvanitis, Athanasios; Bakker, Dorothée C.E.; Bopp, Laurent; Canadell, Josep G.; Chini, Louise P.; Doney, Scott C.; Harper, Anna B.; Harris, Ian C.; House, Joanna I.; Jain, Atul K.; Jones, Samantha D.; Kato, Etsushi; Keeling, Ralph F.; Klein Goldewijk, Kees; Körtzinger, Arne; Koven, Charles D.; Lefévre, Nathalie; Maignan, Fabienne; Omar, Abdirahman; Ono, Tsuneo; Park, Geun-Ha; Pfeil, Benjamin; Poulter, Benjamin; Raupach, Michael R.; Regnier, Pierre; Rödenbeck, Christian; Saito, Shu; Schwinger, Jörg; Segschneider, Joachim; Stocker, Benjamin D.; Takahashi, Taro; Tilbrook, Bronte; van Heuven, Steven; Viovy, Nicolas; Wanninkhof, Rik; Wiltshire, Andrew J.; Zaehle, Sönke (Peer reviewed; Journal article, 2014-06-17)
      Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is important to better understand the global carbon cycle, support the ...

    • Has a warm North Atlantic contributed to recent European cold winters? 

      Keenlyside, Noel; Omrani, Nour-Eddine (Peer reviewed; Journal article, 2014-06-02)
      The rise of global surface temperature waned during the last decade, despite increasing greenhouse gas concentrations. The temperature changes were most pronounced over northern hemisphere land masses during winter (Cohen ...

    • Heterogeneity of impacts of high CO2 on the North Western European shelf 

      Artioli, Yuri; Blackford, Jerry C.; Nondal, Gisle; Bellerby, Richard; Wakelin, Sarah L.; Holt, Jason T.; Butenschön, Momme; Allen, Julian Icarus (Peer reviewed; Journal article, 2014-02-03)
      The increase in atmospheric CO2 is a dual threat to the marine environment: from one side it drives climate change, leading to modifications in water temperature, circulation patterns and stratification intensity; on the ...

    • Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica 

      Darelius, Elin Maria K.; Makinson, Keith; Daae, Kjersti Birkeland; Fer, Ilker; Holland, Paul R.; Nicholls, Keith W. (Peer reviewed; Journal article, 2014)
      Cold and dense ice shelf water (ISW) emerging from the Filchner-Ronne Ice Shelf cavity in the southwestern Weddell Sea flows northward through the Filchner Depression to eventually descend the con- tinental slope and ...

    • Hydrography, transport and mixing of the West Spitsbergen Current: the Svalbard Branch in summer 2015 

      Kolås, Eivind; Fer, Ilker (Peer reviewed; Journal article, 2018-12-21)
      Measurements of ocean currents, stratification and microstructure were made in August 2015, northwest of Svalbard, downstream of the Atlantic inflow in Fram Strait in the Arctic Ocean. Observations in three sections are ...

    • Interannual sea-air CO2 flux variability from an observation-driven ocean mixed-layer scheme 

      Rödenbeck, Christian; Bakker, Dorothée C.E.; Metzl, Nicolas; Olsen, Are; Sabine, Christopher; Cassar, Nicolas; Reum, Friedemann; Keeling, Ralph F.; Heimann, Martin (Peer reviewed; Journal article, 2014-09-01)
      Interannual anomalies in the sea–air carbon dioxide (CO2) exchange have been estimated from surface-ocean CO2 partial pressure measurements. Available data are sufficient to constrain these anomalies in large parts of the ...

    • Laboratory Experiments on Internal Solitary Waves in Ice-Covered Waters 

      Carr, Magda; Sutherland, P.; Haase, A.; Evers, K.-U.; Fer, Ilker; Jensen, Atle; Kalisch, Henrik; Berntsen, Jarle; Parau, E.; Thiem, Ø.; Davies, P.A. (Peer reviewed; Journal article, 2019)
      Internal solitary waves (ISWs) propagating in a stably stratified two‐layer fluid in which the upper boundary condition changes from open water to ice are studied for grease, level, and nilas ice. The ISW‐induced current ...

    • Laboratory study of initial sea-ice growth: properties of grease ice and nilas 

      Naumann, Ann-Kristin; Notz, Dirk; Håvik, Lisbeth; Sirevaag, Anders (Peer reviewed; Journal article, 2012-07-10)
      We investigate initial sea-ice growth in an ice-tank study by freezing an NaCl solution of about 29 g kg−1 in three different setups: grease ice grew in experiments with waves and in experiments with a current and wind, ...

    • Lateral Heat Transport in the Lofoten Basin: Near-Surface Pathways and Subsurface Exchange 

      Dugstad, Johannes Sandanger; Fer, Ilker; Lacasce, Joseph Henry; Sanchez de la Lama, Marta; Trodahl, Marta (Peer reviewed; Journal article, 2019)
      The Lofoten Basin in the Nordic Seas plays a central role in the Atlantic overturning circulation by acting as a reservoir for the warm and saline Atlantic Water flow toward the Arctic Ocean. The mass and heat exchange ...

    • The Lofoten Basin Eddy: three years of evolution as observed by Seagliders 

      Yu, Lusha; Bosse, Anthony; Fer, Ilker; Orvik, Kjell Arild; Bruvik, Erik Magnus; Hessevik, Idar; Kvalsund, Karsten (Peer reviewed; Journal article, 2017-08)
      The Lofoten Basin in the Norwegian Sea is an area where the warm Atlantic Water is subject to the greatest heat losses anywhere in the Nordic Seas. A long-lived, deep, anticyclonic eddy is located in the central part of ...