Now showing items 258-277 of 856

    • Facilitating microplastic quantification through the introduction of a cellulose dissolution step prior to oxidation: Proof-of-concept and demonstration using diverse samples from the Inner Oslofjord, Norway 

      Olsen, Linn Merethe Brekke; Knutsen, Heidi; Mahat, Sabnam; Wade, Emma Jane; Arp, Hans Peter (Journal article; Peer reviewed, 2020)
      Identifying and quantifying microplastic in marine samples can be facilitated by removing natural organic matter (NOM). Cellulosic material, like chitin, however, are a type of NOM that is resistant to chemical digestion, ...
    • Factors affecting extreme rainfall events in the South Pacific 

      Pariyar, Sunil Kumar; Keenlyside, Noel; Sorteberg, Asgeir; Spengler, Thomas; Bhatt, Bhuwan Chandra; Ogawa, Fumiaki (Journal article; Peer reviewed, 2020)
      Extreme rainfall events in the South Pacific are widespread and affected by various factors on different time scales. We use daily rainfall data from 20 stations over the South Pacific to investigate the characteristics ...
    • Factors controlling the total alkalinity in the Arabian Sea and Red Sea 

      Elageed, Salma Khalafalla Dafaa E (Master thesis, 2010-06-01)
      Based on data obtained during the Geochemical Ocean Section Study (GEOSECS) 1977, Mer Rouge (MEROU) 1982, and US Joint Global Ocean Flux (JGOFS) 1995 studies we have analyzed the processes controlling the total alkalinity ...
    • Faroe Bank Channel Overflow: Mesoscale Variability 

      Darelius, Elin Maria K.; Fer, Ilker; Quadfasel, Detlef (Peer reviewed; Journal article, 2011-11)
      The Faroe Bank Channel is the deepest connection through the Greenland–Scotland Ridge, where dense water formed north of the ridge flows southward over the sill crest, contributing to the formation of North Atlantic Deep ...
    • The fate of the Atlantic Water in the North Icelandic Irminger Current 

      Hermansen, Stine Camilla (Master thesis, 2012-01-19)
      The fate of the Atlantic Water within the North Icelandic Irminger Current has long been questioned. The North Icelandic Irminger Current flows along the Icelandic shelf area to the west and north of Iceland, bringing warm ...
    • Fine scale distribution of precipitation in the Voss area 

      Pontoppidan, Marie Louise Nielsen (Master thesis, 2015-06-05)
      The precipitation in Western Norway is strongly affected by its position in the mid latitude conveyor belt of synoptic systems. When the warm and moist air impinges on the complex mountainous terrain, large variabilities ...
    • Finite Element Analysis of the fatigue strength of a big-end bolt 

      Langeland, Jan Harald (Master thesis, 2017-06-23)
      This thesis investigates, with the use of finite element method, the stress formation in a big-end bolt during the power stroke in an IC piston engine. The method used is quasi-static analysis of the lower part of the ...
    • First results of turbulence measurements in a wind park with the Small Unmanned Meteorological Observer SUMO 

      Reuder, Joachim; Jonassen, Marius Opsanger (Peer reviewed; Journal article, 2012-01)
      The Small Unmanned Meteorological Observer (SUMO), equipped with a miniaturized 5-hole probe for turbulent flow measurements with 100 Hz temporal resolution, has for the first time been operated in and around a wind farm. ...
    • FLOHOF 2007: an overview of the mesoscale meteorological field campaign at Hofsjökull, Central Iceland 

      Reuder, Joachim; Ablinger, Markus; Ágústsson, Hálfdán; Brisset, Pascal; Brynjólfsson, Sveinn; Garhammer, Markus; Jóhannesson, Tómas; Jonassen, Marius O.; Kühnel, Rafael; Lämmlein, Stephan; de Lange, Tor; Lindenberg, Christian; Malardel, Sylvie; Mayer, Stephanie; Müller, Martin; Ólafsson, Haraldur; Rögnvaldsson, Ólafur; Schäper, Wolfgang; Spengler, Thomas; Zängl, Günther; Egger, Joseph (Peer reviewed; Journal article, 2012-04)
      The FLOHOF field campaign took place in the period July 21 to August 24, 2007 on and in the surroundings of Hofsjökull glacier in Central Iceland. During the campaign, 18 automatic weather stations (AWS) recording temperature, ...
    • Flow over a backward-facing step, a numerical study comparing a zand a σ-coordinate model 

      Rygg, Kristin; Alendal, Guttorm; Haugan, Peter Mosby (Peer reviewed; Journal article, 2011)
      Homogeneous, nonrotating flow over a backward-facing rounded step is simulated using the 2D vertical version of two general circulation models, a z-coordinate model—the Massachusetts Institute of Technology general circulation ...
    • 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 ...
    • 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, 2019-08-08)
      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, ...
    • 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 ...
    • Frequency Regulation of Synchronous Generator 

      Sørås, Stian Jensen (Master thesis, 2017-06-20)
      The objective of this thesis is to create a Load Frequency Control (LFC) to regulate the active power output and frequency of a synchronous generator, and to conduct experiments to verify frequency stability. The electrical ...
    • Frontal-wave cyclogenesis in the North Atlantic –a climatological characterisation 

      Schemm, Sebastian; Sprenger, Michael (Peer reviewed; Journal article, 2015-10)
      The ambient conditions during cyclogenesis on fronts in the North Atlantic (NA) are characterised climatologically in the ERA-Interim dataset. These ‘secondary’ cyclones, which grow from frontal waves, are typically small ...
    • Frontogenesis of the Angola-Benguela Frontal Zone 

      Koseki, Shunya; Giordani, Herve; Goubanova, Katerina (Peer reviewed; Journal article, 2019-02-08)
      A diagnostic analysis of the climatological annual mean and seasonal cycle of the Angola–Benguela Frontal Zone (ABFZ) is performed by applying an ocean frontogenetic function (OFGF) to the ocean mixing layer (OML). The ...
    • Future Abrupt Changes in Winter Barents Sea Ice Area 

      Rieke, Ole (Master thesis, 2021-06-01)
      The Barents Sea is an area of strong anthropogenic winter sea ice loss that is superimposed by pronounced internal variability on interannual to multidecadal timescales. This internal variability represents a source of ...
    • Global and regional surface cooling in a warming climate: a multi-model analysis 

      Medhaug, Iselin; Drange, Helge (Peer reviewed; Journal article, 2015)
      Instrumental temperature records show that the global climate may experience decadal-scale periods without warming despite a long-term warming trend. We analysed 17 global climate models participating in phase 5 of the ...
    • The global carbon budget 1959–2011 

      Le Quéré, Corinne; Andres, Robert J.; Boden, Tom A.; Conway, Thomas; Houghton, Richard A.; House, Jo I.; Marland, Gregg; Peters, Glen Philip; van der Werf, Guido R.; Ahlström, Anders; Andrew, Robbie; Bopp, Laurent; Canadell, Josep G.; Ciais, Philippe; Doney, Scott C.; Enright, Clare; Friedlingstein, Pierre; Huntingford, Chris; Jain, Atul K.; Jourdain, Charlotte; Kato, Etushi; Keeling, Ralph F.; Klein Goldewijk, Kees; Levis, Samuel; Levy, Peter; Lomas, Mark R.; Poulter, Ben; Raupach, Michael R.; Schwinger, Jörg; Sitch, Stephen; Stocker, Benjamin D.; Viovy, Nicolas; Zaehle, Sönke; Zeng, Ning (Peer reviewed; Journal article, 2013-05-08)
      Accurate assessments 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 ...
    • 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 ...