Now showing items 589-608 of 1030

    • North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability 

      Siew, Yu Feng; Li, Camille; Ting, Mingfang; Sobolowski, Stefan Pieter; Wu, Yutian; Chen, Xiaodan (Journal article; Peer reviewed, 2021)
      Arctic sea ice extent in autumn is significantly correlated with the winter North Atlantic Oscillation (NAO) in the satellite era. However, questions about the robustness and reproducibility of the relationship persist. ...
    • North Atlantic storm track changes during the Last Glacial Maximum recorded by Alpine speleothems 

      Luetscher, Marc; Boch, Ronny; Sodemann, Harald; Spötl, Christoph; Cheng, Hai; Edwards, Roger Lawrence; Frisia, Silvia; Hof, Florian; Müller, Wolfgang A. (Peer reviewed; Journal article, 2015-02-27)
      The European Alps are an effective barrier for meridional moisture transport and are thus uniquely placed to record shifts in the North Atlantic storm track pattern associated with the waxing and waning of Late-Pleistocene ...
    • The North Atlantic waveguide and downstream impact experiment 

      Schäfler, Andreas; Craig, George; Wernli, Heini; Arbogast, Philippe; Doyle, James D.; McTaggart-Cowan, Ron; Methven, John; Rivière, Gwendal; Ament, Felix; Boettcher, Maxi; Bramberger, Martina; Cazenave, Quitterie; Cotton, Richard; Crewell, Susannne; Delanoë, Julien; Dörnbrack, Andreas; Ehrlich, André; Ewald, Florian; Fix, Andreas; Grams, Christian M.; Gray, Suzanne L.; Grob, Johannes; Groß, Silke; Hagen, Martin; Harvey, Ben; Hirsch, Lutz; Jacob, Marek; Kölling, Tobias; Konow, Heike; Lemmerz, Christian; Lux, Oliver; Magnusson, Linus; Mayer, Bernhard; Mech, Mario; Moore, Richard; Pelon, Jacques; Quinting, Julian; Rahm, Stephan; Rapp, Markus; Rautenhaus, Marc; Reitebuch, Oliver; Reynolds, Carlolyn A.; Sodemann, Harald; Spengler, Thomas; Vaughan, Geraint; Wendisch, Manfred; Wirth, Martin; Witschas, Benjamin; Wolf, Kevin; Zinner, Tobias (Peer reviewed; Journal article, 2018)
      The North Atlantic Waveguide and Downstream Impact Experiment (NAWDEX) explored the impact of diabatic processes on disturbances of the jet stream and their influence on downstream high-impact weather through the deployment ...
    • North Atlantic weather regimes in δ18O of winter precipitation: isotopic fingerprint of the response in the atmospheric circulation after volcanic eruptions 

      GudlaugsdOttir, Hera; Sjolte, Jesper; Sveinbjörnsdóttir, Árny Erla; Werner, Martin; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2019)
      Equatorial volcanic eruptions are known to impact the atmospheric circulation on seasonal time scales through a strengthening of the stratospheric zonal winds followed by dynamic ocean-atmosphere coupling. This emerges as ...
    • North Sea circulation: Atlantic inflow and its destination 

      Winther, Nina Gjerde; Johannessen, Johnny A. (Peer reviewed; Journal article, 2006-12-22)
      This study investigates the Atlantic inflow to the North Sea; its variabil- ity, pathways and destination. Results from a numerical model show that the variability of Atlantic inflow is dependent on the inflow location. ...
    • A North-South Contrast of Subsurface Salinity Anomalies in the Northwestern Pacific From 2002 to 2013 

      Yan, Youfang; Svendsen, Lea; Wang, Chunzai; Keenlyside, Noel; Xu, Dazhi (Peer reviewed; Journal article, 2019-03)
      This paper finds a north‐south contrast of subsurface salinity trend during 2002–2013 in the northwestern Pacific. Both Argo float data and long‐term repeat hydrographic measurements along the 137°E section show that ...
    • Northeast Arctic Cod and Prey Match-Mismatch in a High-Latitude Spring-Bloom System 

      Vikebø, Frode Bendiksen; Broch, Ole Jacob; Kajiya Endo, Clarissa Akemi; Frøysa, Håvard G; Carroll, JoLynn; Juselius, Jonas; Langangen, Øystein Ole Gahr (Journal article; Peer reviewed, 2021)
      By combining an ocean model, a nutrient-phytoplankton-zooplankton-detritus-model and an individual-based model for early life stages of Northeast Arctic cod we systematically investigate food limitations and growth performance ...
    • The Northeast Greenland shelf as a potential habitat for the Northeast Arctic cod 

      Strand, Kjersti Opstad; Sundby, Svein; Albretsen, Jon; Vikebø, Frode Bendiksen (Peer reviewed; Journal article, 2017-09-26)
      Observations (1978–1991) of distributions of pelagic juvenile Northeast Arctic cod (Gadus morhua L.) show that up to 1/3 of the year class are dispersed off the continental shelf and into the deep Norwegian Sea while on ...
    • The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot 

      Lind, Sigrid (Doctoral thesis, 2018-05-09)
      Global warming is amplified in the cold and white Arctic, where strong positive feedback mechanisms associated with, e.g., changes in surface conditions and the vertical structure of the Arctic atmosphere enhance the ...
    • The northern European shelf as an increasing net sink for CO2 

      Becker, Meike; Olsen, Are; Landschützer, Peter; Omar, Abdirahman; Rehder, Gregor; Rödenbeck, Christian; Skjelvan, Ingunn (Journal article; Peer reviewed, 2021)
      We developed a simple method to refine existing open-ocean maps and extend them towards different coastal seas. Using a multi-linear regression we produced monthly maps of surface ocean fCO2 in the northern European coastal ...
    • Northern Hemisphere storminess in the Norwegian Earth System Model (NorESM1-M) 

      Knudsen, Erlend Moster; Walsh, J. E. (Journal article, 2014-12-16)
      Metrics of storm activity in Northern Hemisphere high- and midlatitudes are evaluated from historical output and future projections by the Norwegian Earth System Model (NorESM1-M) coupled global climate model. The European ...
    • Norway's marine and terrestrial climate mapped with dynamical downscaling 

      Haakenstad, Hilde (Doctoral thesis, 2022-06-20)
      Long-term numerical reconstructions on high spatial resolution of past weather are essential tools for studies of the local climate and climate extremes. The focus of this thesis has been to resolve the wind, precipitation, ...
    • Norwegian Atlantic Slope Current along the Lofoten Escarpment 

      Fer, Ilker; Bosse, Anthony; Dugstad, Johannes Sandanger (Journal article; Peer reviewed, 2020-06)
      Observations from moored instruments are analyzed to describe the Norwegian Atlantic Slope Current at the Lofoten Escarpment (13∘ E, 69∘ N). The data set covers a 14-month period from June 2016 to September 2017 and resolves ...
    • A novel approach to computing super observations for probabilistic wave model validation 

      Bohlinger, Patrik; Breivik, Øyvind; Economou, Theodoros; Müller, Malte (Peer reviewed; Journal article, 2019-07)
      In the field of wave model validation, the use of super observations is a common strategy to smooth satellite observations and match the simulated spatiotemporal scales. An approach based on averaging along track is widely ...
    • Novel Tools for Research and Education in Seismology 

      Boulaenko, Mikhail E. (Master thesis, 2002)
      It’s first part describes the noise performances of an inexpensive instrument for seismic data collection; the geophone-based seismograph used in the SEIS-SCHOOL network and now called Cossac Ranger. The analysis of its ...
    • A Numerical approach for Ship Energy Analysis 

      Kopperstad, Jørgen (Master thesis, 2018-06-20)
      This master´s thesis has focused on energy analysis of ships and ship designs by developing a tool and a method for numerical analysis for evaluation of emissions, efficiency and costs. The overall focus has been on making ...
    • A numerical estimate of the tidal energy in the Lofoten area 

      Dugstad, Johannes Sandanger (Master thesis, 2014-05-28)
      In the following study the energy potential associated with tidal energy will be investigated. A depth integrated model based on the Navier Stokes equations and the continuity equation will be applied to simulate the tides ...
    • Numerical modelling of the sub-surface melting of marine-terminating glaciers in Arctic fjords 

      Kalhagen, Kjersti (Master thesis, 2015-06-01)
      Submarine melting of glaciers terminating in fjords is likely to be of high importance regarding the total ice loss from ice sheets and ice caps and the resulting addition of freshwater to the ocean. Submarine melting ...
    • Numerical sensitivity studies on the variability of climate-relevant processes in the Barents Sea 

      Harms, I. H.; Schrum, Corinna; Hatten, K. (Peer reviewed; Journal article, 2005-06-03)
      The Barents Sea is a key region in the North Atlantic/Arctic Ocean climate system because of the intense ocean-atmosphere heat exchange and the formation of sea ice. The latter process is connected with salt input, so-called ...