Now showing items 1004-1023 of 1030

    • Water mass transformation in the Greenland Sea during the period 1986-2016 

      Brakstad, Ailin; Våge, Kjetil; Håvik, Lisbeth; Moore, G.W.K. (Peer reviewed; Journal article, 2019-01)
      Hydrographic measurements from ships, autonomous profiling floats, and instrumented seals over the period 1986–2016 are used to examine the temporal variability in open-ocean convection in the Greenland Sea during winter. ...
    • Water mass transformation in the Iceland Sea 

      Våge, Kjetil; Moore, George William Kent; Jónsson, Steingrímur; Valdimarsson, Héðinn (Peer reviewed; Journal article, 2015)
      The water mass transformation that takes place in the Iceland Sea during winter is investigated using historical hydrographic data and atmospheric reanalysis fields. Surface densities exceeding σθ ¼ 27:8 kg=m3, and hence ...
    • Water mass transformations and air-sea exchange in the Barents Sea 

      Årthun, Marius (Doctoral thesis, 2011-09-22)
      Water mass transformation processes in the Barents Sea and their interannual to decadal variability are studied using a regional coupled ice-ocean model and observational data. Long-term data allows for assessment of ...
    • Water mass transformations in the Barents Sea and linkages to the Polar Front 

      Lien, Vidar Surén (Doctoral thesis, 2010-10-29)
    • Waterside convection and stratification control methane spreading in supersaturated Arctic fjords (Spitsbergen) 

      Damm, Ellen; Ericson, Ylva; Falck, Eva (Journal article; Peer reviewed, 2021)
      Seasonally ice covered in the past, the fjords in West Spitsbergen turn into being perennially ice free in the present. This feedback to Arctic amplification of global warming changes gas fluxes at the atmosphere-ocean ...
    • Wave and wind conditions in the Red Sea. A numerical study using a third generation wave model 

      Saad, Ahmed Mohamed Elfatih (Master thesis, 2010-06-01)
      In order to understand how waves behave and how other parameters can interact between ocean and atmosphere we can use a numerical model. For the Red Sea basin wave measurements are absent and due to that a WAM wave model ...
    • Wave Extremes in the Northeast Atlantic 

      Aarnes, Ole Johan; Breivik, Øyvind; Reistad, Magnar (Peer reviewed; Journal article, 2012-03)
      The objective of this study is to compute 100-yr return value estimates of significant wave height using a new hindcast developed by the Norwegian Meteorological Institute. This regional hindcast covers the northeast ...
    • Wave runup estimates at gentle beaches in the northern Indian Ocean 

      Alazeez, Ahmed Alkarory Ahmed Abd (Master thesis, 2012-10-01)
      The aim of this study is to estimate the wave runup on selected beaches around the northern Indian Ocean. The runup has been estimated using ERA-Interim, which is the latest global atmospheric re-analysis produced by the ...
    • Waveform classification of airborne synthetic aperture radar altimeter over Arctic sea ice 

      Zygmuntowska, Marta; Khvorostovsky, Kirill; Helm, Veith; Sandven, Stein (Peer reviewed; Journal article, 2013-08-19)
      Sea ice thickness is one of the most sensitive variables in the Arctic climate system. In order to quantify changes in sea ice thickness, CryoSat-2 was launched in 2010 carrying a Ku-band radar altimeter (SIRAL) designed ...
    • A wavelet-entropy based segmentation of turbulence measurements from a moored shear probe near the wavy sea surface 

      Bakhoday Paskyabi, Mostafa (Peer reviewed; Journal article, 2019-12-17)
      In this study, we explore the applicability of a wavelet-entropy based segmentation technique in reduction of motion-induced contaminations in time-domain from subsurface turbulence measurements made by a moving shear ...
    • Wave–induced characteristics of atmospheric turbulence flux measurements 

      Paskyabi, Mostafa Bakhoday; Flügge, Martin; Edson, James B.; Reuder, Joachim (Peer reviewed; Journal article, 2013)
      In this paper, we present the air–sea flux of momentum obtained with the eddy correlation method applied to data measured from a moored discus buoy deployed approximately 600 m off a research Air Sea Interaction Tower at ...
    • Weakening Atlantic Niño-Pacific connection under greenhouse warming 

      Jia, Fan; Cai, Wenju; Wu, Lixin; Gan, Bolan; Wang, Guojian; Kucharski, Fred; Chang, Ping; Keenlyside, Noel (Peer reviewed; Journal article, 2019-08-21)
      Sea surface temperature variability in the equatorial eastern Atlantic, which is referred to as an Atlantic Niño (Niña) at its warm (cold) phase and peaks in boreal summer, dominates the interannual variability in the ...
    • Weakening of Cold Halocline Layer Exposes Sea Ice to Oceanic Heat in the Eastern Arctic Ocean 

      Polyakov, Igor V.; Rippeth, Tom; Fer, Ilker; Alkire, Matthew B.; Carmack, Eddy; Ingvaldsen, Randi Brunvær; Ivanov, Vladimir V.; Janout, Markus; Lind, Sigrid; Padman, Laurie; Pnyushkov, Andrey V.; Rember, Robert (Journal article; Peer reviewed, 2020)
      A 15-yr duration record of mooring observations from the eastern (>70°E) Eurasian Basin (EB) of the Arctic Ocean is used to show and quantify the recently increased oceanic heat flux from intermediate-depth (~150–900 m) ...
    • Wind and wave extremes over the world oceans from very large ensembles 

      Breivik, Øyvind; Aarnes, Ole Johan; Abdalla, Saleh; Bidlot, Jean-Raymond; Janssen, Peter A. E. M. (Peer reviewed; Journal article, 2014-07)
      Global return values of marine wind speed and significant wave height are estimated from very large aggregates of archived ensemble forecasts at +240 h lead time. Long lead time ensures that the forecasts represent independent ...
    • Wind coherence measurement by a single pulsed Doppler wind lidar 

      Cheynet, Etienne Francois Cyprien; Jakobsen, Jasna Bogunovic; Svardal, Benny; Reuder, Joachim; Kumer, Valerie-Marie (Peer reviewed; Journal article, 2016-09)
      A single pulsed Doppler wind lidar, deployed at the FINO1 platform in the North Sea, has been used to monitor the lateral and vertical coherence of the along-wind component. To maximize the sampling frequency of the ...
    • Wind Farm Layout Optimization - A case study on maximizing the annual energy production in Creyke Beck B. 

      Fjellanger, Eirin Mæland (Master thesis, 2016-06-01)
      For offshore wind farms, detailed planning, including wind farm design optimization, is becoming increasingly important to secure and increase the wind farm's revenue during its operational life time. Since the energy ...
    • Wind Intensity Is Key to Phytoplankton Spring Bloom Under Climate Change 

      Vikebø, Frode Bendiksen; Strand, Kjersti Opstad; Sundby, Svein (Peer reviewed; Journal article, 2019-08-30)
      The onset of the spring bloom (OSB) occurs when phytoplankton growth exceeds losses and is promoted by a transition from deep convection to a shallow mixing layer concurrent with increasing light intensities in nutrient-enriched ...
    • Wind Stress in the Coastal Zone: Observations from a Buoy in Southwestern Norway 

      Flügge, Martin; Bakhoday Paskyabi, Mostafa; Reuder, Joachim; El Guernaoui, Omar (Peer reviewed; Journal article, 2019-08-26)
      Several studies have focused on the investigation of the wind stress in open ocean conditions where coastal processes were negligible. However, the direction and magnitude of the wind stress vector in coastal areas are ...
    • Wind stress mediated variability of the Filchner Trough overflow, Weddell Sea 

      Daae, Kjersti; Darelius, Elin Maria K.; Fer, Ilker; Østerhus, Svein; Ryan, S. (Peer reviewed; Journal article, 2018-05-06)
      The Filchner Trough (FT) is a key site for exchange of water masses between the Weddell Sea continental shelf and the deep ocean. Cold and dense Ice Shelf Water (ISW), a precursor for Antarctic Bottom Water, flows north ...
    • Wind-Driven Variability in the Spitsbergen Polar Current and the Svalbard Branch Across the Yermak Plateau 

      Nilsen, Frank; Ersdal, Eli Anne; Skogseth, Ragnheid (Journal article; Peer reviewed, 2021)
      The Yermak Plateau (YP) acts as a guidance or barrier for the West Spitsbergen Current (WSC), which either crosses the plateau or flows around it to enter the Arctic Ocean. Closer to the West Spitsbergen coast, the Spitsbergen ...