• On the future of Argo: A global, full-depth, multi-disciplinary array 

      Roemmich, Dean; Alford, Matthew H.; Claustre, Herve; Johnson, Kenneth S.; King, Brian; Moum, James; Oke, Peter R.; Owens, W. Brechner; Pouliquen, Sylvie; Purkey, Sarah; Scanderbeg, Megan; Suga, Toshio; Wijffels, Susan E.; Zilberman, Nathalie; Bakker, Dorothee; Baringer, Molly O.; Belbeoch, Mathieu; Bittig, Henry C.; Boss, Emmanuel; Calil, Paulo; Carse, Fiona; Carval, Thierry; Chai, Fei; Conchubhair, Diarmuid Ó.; D'Ortenzio, Fabrizio; Dall'Olmo, Giorgio; Desbruyeres, Damien; Fennel, Katja; Fer, Ilker; Ferrari, Raffaele; Forget, Gael; Freeland, Howard; Fujiki, Tetsuichi; Gehlen, Marion; Greenan, Blair; Hallberg, Robert; Hibiya, Toshiyuki; Hosoda, Shigeki; Jayne, Steven; Jochum, Markus; Johnson, Gregory C.; Kang, KiRyong; Kolodziejczyk, Nicolas; Körtzinger, Arne; Le Traon, Pierre-Yves; Lenn, Yueng-Djern; Maze, Guillaume; Mork, Kjell Arne; Morris, Tamaryn; Nagai, Takeyoshi; Nash, Jonathan; Garabato, Alberto N.; Olsen, Are; Pattabhi, Rama R.; Prakash, Satya; Riser, Stephen; Schmechtig, Catherin; Shroyer, Emily; Sterl, Andreas; Sutton, Philip; Talley, Lynne; Tanhua, Toste; Thierry, Virginie; Thomalla, Sandy; Toole, John; Troisi, Ariel; Trull, Thomas W.; Turton, Jonathan D.; Vélez-Belchi, Pedro Joaquin; Walczowski, Waldemar; Wang, Haili; Wanninkhof, Rik; Waterhouse, Amy F.; Watson, Andrew; Wilson, Cara; Wong, Annie P.S.; Xu, Jianping; Yasuda, Ichiro (Peer reviewed; Journal article, 2019-08-02)
      The Argo Program has been implemented and sustained for almost two decades, as a global array of about 4000 profiling floats. Argo provides continuous observations of ocean temperature and salinity versus pressure, from ...
    • On the Influence of Latent and Sensible Heating for Maintaining Baroclinicity in the Gulf Stream Region 

      Dahl-Eriksen, Ståle (Master thesis, 2016-06-01)
      For the North Atlantic storm track to collocate with the ocean front, there has to be efficient restoring mechanisms for baroclinicity. The total diabatic heating is agreed to play the most dominant role, but whether the ...
    • On the Influence of Sea Surface Temperature distributions on the Development of Extratropical Cyclones 

      Bui, Hai Hoang; Spengler, Thomas (Journal article; Peer reviewed, 2021)
      The sea surface temperature (SST) distribution can modulate the development of extratropical cyclones through sensible and latent heat fluxes. However, the direct and indirect effects of these surface fluxes, and thus the ...
    • On the Influence of Sea Surface Temperatures on Cyclone Characteristics in the Gulf Stream and Kuroshio Region 

      Tsopouridis, Leonidas (Doctoral thesis, 2021-01-29)
      The Gulf Stream and the Kuroshio are the western boundary currents in the North Atlantic and North Pacific, respectively and are associated with maxima in midlatitude precipitation and air-sea heat exchange in the midlatitudes. ...
    • On the link between cold fronts and hail in Switzerland 

      Schemm, Sebastian; Nisi, Luca; Martinov, Andrey; Leuenberger, Daniel; Martius, Olivia (Peer reviewed; Journal article, 2016-05)
      Hail is the costliest atmospheric hazard in Switzerland, causing substantial damage to agriculture, cars and buildings every year. In this study, a 12-year statistic of objectively identified cold fronts and a radar-based ...
    • On the modulation of the periodicity of the Faroe Bank Channel overflow instabilities 

      Darelius, Elin Maria K.; Fer, Ilker; Rasmussen, Till; Guo, Chuncheng; Larsen, Karin Margretha Húsgarð (Peer reviewed; Journal article, 2015-10-26)
      The Faroe Bank Channel (FBC) is one of the ma- jor pathways where dense, cold water formed in the Nordic Seas flows southward as a bottom-attached energetic plume towards the North Atlantic. The plume region downstream of ...
    • On the nature of the factors that control spring bloom development at the entrance to the Barents Sea and their interannual variability 

      Olsen, Are; Johannessen, Truls; Rey, Francisco (Journal article, 2003-12)
      Analysis of data obtained by the Institute of Marine Research, Norway, at their regular surveys of the Fugløya-Bjørnøya section, between the northern tip of Norway and Bear Island, has allowed for an identification of the ...
    • On the Nordic Seas’ role in the Atlantic Meridional Overturning Circulation 

      Iovino, Doroteaciro (Doctoral thesis, 2007-06-27)
      In the present climate, the North Atlantic thermohaline circulation (THC) plays a fundamental role in the global transport of heat at high latitudes. The response of the North Atlantic Ocean-Nordic Seas THC to surface ...
    • On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study 

      Heinze, Christoph; Gehlen, M.; Land, C. (Peer reviewed; Journal article, 2006-06-16)
      The global distributions of the radionuclides 230Th, 231Pa, and 10Be are simulated with a biogeochemical ocean general circulation model. Sensitivity experiments for changes in the composition of the particle composition ...
    • On the recent time history and forcing of the inflow of Atlantic Water to the Arctic Mediterranean 

      Nilsen, Jan Even Øie; Hátún, Hjalmar; Sandø, Anne Britt; Bethke, Ingo; Laurantin, Olivier; Gao, Yongqi; Drange, Helge; Furevik, Tore (Extended Abstract for The ACIA International Scientific Symposium on Climate Change in the Arctic;, Conference object, 2004)
    • On the seasonal signal of the Filchner overflow, Weddell Sea, Antarctica 

      Darelius, Elin Maria K.; Strand, Kjersti Opstad; Østerhus, Svein; Gammelsrød, Tor; Årthun, Marius; Fer, Ilker (Peer reviewed; Journal article, 2014)
      The cold ice shelf water (ISW) that formed below the Filchner–Ronne Ice Shelf in the southwestern Weddell Sea, Antarctica, escapes the ice shelf cavity through the Filchner Depression and spills over its sill at a rate of ...
    • One more step toward a warmer Arctic 

      Polyakov, Igor V.; Beszczynska-Möller, Agnieszka; Carmack, Eddy C.; Dmitreko, Igor A.; Fahrbach, E.; Frolov, Ivan E.; Gerdes, Rüdiger; Hansen, Edmond; Holfort, Jürgen; Ivanov, Vladimir V.; Johnson, Mark A.; Karcher, Michael; Kauker, Frank; Morison, James; Orvik, Kjell Arild; Schauer, Ursula; Simmons, Harper L.; Skagseth, Øystein; Sokolov, Vladimir T.; Steele, Michael; Timokhov, Leonid A.; Walsh, David; Walsh, John E. (Peer reviewed; Journal article, 2005-09-09)
      This study was motivated by a strong warming signal seen in mooring-based and oceanographic survey data collected in 2004 in the Eurasian Basin of the Arctic Ocean. The source of this and earlier Arctic Ocean changes lies ...
    • One-dimensional evolution of the upper water column in the Atlantic sector of the Arctic Ocean in winter 

      Fer, Ilker; Peterson, Algot Kristoffer; Randelhoff, Achim; Meyer, Amelie (Peer reviewed; Journal article, 2017-03)
      A one-dimensional model is employed to reproduce the observed time evolution of hydrographic properties in the upper water column during winter, between 26 January and 11 March 2015, in a region north of Svalbard in the ...
    • Open-source feature-tracking algorithm for sea ice drift retrieval from Sentinel-1 SAR imagery 

      Muckenhuber, Stefan; Korosov, Anton Andreevich; Sandven, Stein (Peer reviewed; Journal article, 2016-04-26)
      A computationally efficient, open-source feature-tracking algorithm, called ORB, is adopted and tuned for sea ice drift retrieval from Sentinel-1 SAR (Synthetic Aperture Radar) images. The most suitable setting and parameter ...
    • Open-source sea ice drift algorithm for Sentinel-1 SAR imagery using a combination of feature tracking and pattern matching 

      Muckenhuber, Stefan; Sandven, Stein (Peer reviewed; Journal article, 2017-08-07)
      An open-source sea ice drift algorithm for Sentinel-1 SAR imagery is introduced based on the combination of feature tracking and pattern matching. Feature tracking produces an initial drift estimate and limits the search ...
    • OpenDrift v1.0: A generic framework for trajectory modelling 

      Dagestad, Knut-Frode; Röhrs, Johannes; Breivik, Øyvind; Ådlandsvik, Bjørn (Peer reviewed; Journal article, 2018-04-13)
      OpenDrift is an open-source Python-based framework for Lagrangian particle modelling under development at the Norwegian Meteorological Institute with contributions from the wider scientific community. The framework is ...
    • Operational algorithm for ice–water classification on dual-polarized RADARSAT-2 images 

      Zakhvatkina, Natalia; Korosov, Anton; Muckenhuber, Stefan; Sandven, Stein; Babiker, Mohamed (Peer reviewed; Journal article, 2017-01-11)
      Synthetic Aperture Radar (SAR) data from RADARSAT-2 (RS2) in dual-polarization mode provide additional information for discriminating sea ice and open water compared to single-polarization data. We have developed an automatic ...
    • Optimization of the Offshore Wind Inter-Array Cable Layout problem using heuristic based algorithms 

      Fotedar, Sunney (Master thesis, 2018-06-13)
      The current work presents an in-exact solution method used to identify feasible, and less costly inter-array cable layout for offshore wind farms. The solution method developed has been built considering the interests of ...
    • Origin of moisture at Arctic sites 

      Jonassen, Trine (Master thesis, 2016-06-01)
      The hydrological cycle is an important component in the understanding of the climate system, and a good understanding of the moisture transport in the atmosphere is important in a changing climate. The climate change may ...