Now showing items 1-20 of 84

    • 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 (Frontiers Media, 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, ...
      Journal article
    • A participatory scenario method to explore the future of marine social‐ecological systems 

      Planque, Benjamin; Mullon, Christian; Arneberg, Per; Eide, Arne; Fromentin, Jean-Marc; Heymans, Johanna J; Hoel, Alf Håkon; Niiranen, Susa; Ottersen, Geir; Sandø, Anne Britt; Sommerkorn, Martin; Thébaud, Olivier; Thorvik, Thorbjørn (John Wiley & Sons Ltd, 2019-03-01)
      Anticipating future changes in marine social‐ecological systems (MSES) several decades into the future is essential in the context of accelerating global change. This is challenging in situations where actors do not share ...
      Journal article
    • Turbulent kinetic energy estimates from profiling wind LiDAR measurements and their potential for wind energy applications 

      Kumer, Valerie-Marie; Reuder, Joachim; Dorninger, Manfred; Zauner, Rudolf; Grubišić, Vanda (Elsevier, 2016-07-10)
      This study shows that turbulent kinetic energy (TKE) estimates, derived from static LiDARs in Doppler Beam Swing (DBS) mode, permit a qualitative and quantitative characterization and analysis of turbulent structures as ...
      Journal article
    • Volume transport and mixing of the cold water overflow downstream of the Faroe Bank Channel from one year of moored measurements 

      Ullgren, Jenny; Darelius, Elin Maria K.; Fer, Ilker (Copernicus Publications, 2016-03-15)
      One-year long time series of current velocity and temperature from eight moorings deployed in the Faroe Bank Channel (FBC) are analysed to describe the structure and variability of the dense overflow plume on daily to ...
      Journal article
    • Observations of energetic turbulence on the Weddell Sea continental slope 

      Fer, Ilker; Darelius, Elin Maria K.; Daae, Kjersti Birkeland (2016-01-23)
      Turbulence profile measurements made on the upper continental slope and shelf of the southeastern Weddell Sea reveal striking contrasts in dissipation and mixing rates between the two sites. The mean profiles of dissipation ...
      Journal article
    • Lagrangian Measurement of Waves and Near Surface Turbulence from Acoustic Instruments 

      Bakhoday Paskyabi, Mostafa; Bryhni, Helge Thomas; Reuder, Joachim; Fer, Ilker (Elsevier Ltd., 2015-12-02)
      We demonstrate high-resolution measurements of upper ocean flow and turbulence using a Lagrangian drifter. A spherical buoy as a quasi-wave following drifter mitigate the contaminations induced by wave orbital velocities ...
      Journal article
    • Ozone-induced climate change propped up by the Southern Hemisphere oceanic front 

      Ogawa, Fumiaki; Omrani, Nour-Eddine; Nishii, Kazuaki; Nakamura, Hisashi; Keenlyside, Noel (AGU Publications, 2015-11-23)
      The late twentieth century was marked by a significant summertime trend in the Southern Annular Mode (SAM), the dominant mode of tropospheric variability in the extratropical Southern Hemisphere (SH). This trend with ...
      Journal article
    • Mapping sediment–landform assemblages to constrain lacustrine sedimentation in a glacier-fed lake catchment in northwest Spitsbergen 

      Bilt, Willem van der; Balascio, Nicholas L.; Bakke, Jostein (Taylor & Francis, 2015-10-24)
      Changes in the deposition of fine-grained rock-flour in glacier-fed lakes reflect glacier variability. This meltwater-driven signal is, however, often overprinted by other processes. To constrain the signature of lacustrine ...
      Journal article
    • Multiple timescales of stochastically forced North Atlantic Ocean variability: A model study 

      Mecking, Jennifer V.; Keenlyside, Noel; Greatbatch, Richard J. (Springer, 2015-09)
      The Atlantic meridional overturning circulation (AMOC) and the subpolar gyre (SPG) are important elements in mechanisms for multidecadal variability in models in the North Atlantic Ocean. In this study, a 2000-year long ...
      Journal article
    • Skillful prediction of Barents Sea ice cover 

      Onarheim, Ingrid Husøy; Eldevik, Tor; Årthun, Marius; Ingvaldsen, Randi; Smedsrud, Lars Henrik (AGU (American Geophysical Union), 2015-07-08)
      A main concern of present climate change is the Arctic sea ice cover. In wintertime, its observed variability is largely carried by the Barents Sea. Here we propose and evaluate a simple quantitative and prognostic framework ...
      Journal article
    • The impact of mean state errors on equatorial Atlantic interannual variability in a climate model 

      Ding, Hui; Keenlyside, Noel; Latif, Mojib; Park, Wonsun; Wahl, Sebastian (American Geophysical Union, 2015-02-23)
      Observations show that the Equatorial Atlantic Zonal Mode (ZM) obeys similar physics to the El Niño Southern Oscillation (ENSO): positive Bjerknes and delayed negative feedbacks. This implies the ZM may be predictable on ...
      Journal article
    • 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 (Elsevier, 2014-12)
      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 ...
      Journal article
    • Resolving the upper-ocean warm layer improves the simulation of the Madden-Julian oscillation 

      Tseng, Wan-Ling; Tsuang, Ben-Jei; Keenlyside, Noel; Hsu, Huang-Hsiung; Tu, Chia-Ying (Springer, 2014-09)
      Here we show that coupling a high-resolution one-column ocean model to an atmospheric general circulation model dramatically improves simulation of the Madden–Julian oscillation (MJO) to have realistic strength, period, ...
      Journal article
    • Testing a Flexible Method to Reduce False Monsoon Onsets 

      Reeve, Mathew Alexander; Spengler, Thomas; Chu, Pao-Shin (PLoS, 2014-08-08)
      To generate information about the monsoon onset and withdrawal we have to choose a monsoon definition and apply it to data. One problem that arises is that false monsoon onsets can hamper our analysis, which is often ...
      Journal article
    • On the dynamics of two efficient malaria vectors of the Afrotropical region: Anopheles gambiae s.s. and Anopheles arabiensis 

      Lunde, Torleif Markussen (The University of Bergen, 2013-08-19)
      Weather and climate are only some of the factors influencing the dynamics of malaria. With the ongoing debate on the consequences of climate change, there is a need for models which are designed to address these questions. ...
      Doctoral thesis
    • Cattle and climate in Africa: How climate variability has influenced national cattle holdings from 1961–2008 

      Lunde, Torleif Markussen; Lindtjørn, Bernt (PeerJ, 2013-03-19)
      The role of cattle in developing countries is as a source of high-quality food, as draft animals, and as a source of manure and fuel. Cattle represent important contribution to household incomes, and in drought prone ...
      Journal articlePeer reviewed
    • A dynamic model of some malaria-transmitting anopheline mosquitoes of the Afrotropical region. II. Validation of species distribution and seasonal variations 

      Lunde, Torleif Markussen; Balkew, Meshesha; Korecha, Diriba; Gebre-Michael, Teshome; Ulesido, Fekadu Massebo; Sorteberg, Asgeir; Lindtjørn, Bernt (BioMed Central, 2013-02-25)
      Background: The first part of this study aimed to develop a model for Anopheles gambiae s.l. with separate parametrization schemes for Anopheles gambiae s.s. and Anopheles arabiensis. The characterizations were ...
      Journal articlePeer reviewed
    • A dynamic model of some malaria-transmitting anopheline mosquitoes of the Afrotropical region. I. Model description and sensitivity analysis 

      Lunde, Torleif Markussen; Korecha, Diriba; Loha Shumbullo, Eskindir; Sorteberg, Asgeir; Lindtjørn, Bernt (BioMed Central, 2013-01-23)
      Background: Most of the current biophysical models designed to address the large-scale distribution of malaria assume that transmission of the disease is independent of the vector involved. Another common assumption in ...
      Journal articlePeer reviewed
    • How malaria models relate temperature to malaria transmission 

      Lunde, Torleif Markussen; Bayoh, Mohamed Nabie; Lindtjørn, Bernt (BioMed Central, 2013-01-18)
      Background: It is well known that temperature has a major influence on the transmission of malaria parasites to their hosts. However, mathematical models do not always agree about the way in which temperature affects ...
      Journal articlePeer reviewed
    • Temporal biomass dynamics of an Arctic plankton bloom in response to increasing levels of atmospheric carbon dioxide 

      Schulz, Kai G.; Bellerby, Richard; Brussaard, Corina P.D.; Büdenbender, Jan; Czerny, Jan; Engel, Anja; Fischer, Matthias; Koch-Klavsen, Signe; Krug, Sebastian A.; Lischka, Silke; Ludwig, Andrea; Meyerhöfer, Michael; Nondal, Gisle; Silyakova, Anna; Stuhr, Annegret; Riebesell, Ulf (European Geosciences Union, 2013-01-11)
      Ocean acidification and carbonation, driven by anthropogenic emissions of carbon dioxide (CO2), have been shown to affect a variety of marine organisms and are likely to change ecosystem functioning. High latitudes, ...
      Journal article