Now showing items 854-870 of 870

    • 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-Generated Waves in Fjords and Coastal Areas 

      Christakos, Konstantinos (Doctoral thesis, 2021-09-02)
      Accurate predictions of coastal and fjord wave conditions are vital for several sectors such as fish farming, fisheries, as well as coastal and maritime infrastructure. In complex coastlines such as the Norwegian coast ...
    • Winter circulation anomalies in 2009/10 & 2013/14, and associated forcing mechanisms 

      Asbjørnsen, Helene (Master thesis, 2016-05-31)
      Recent cases of severe winter weather in midlatitude regions have been linked to large-scale atmospheric circulation anomalies, but the physical mechanisms driving such anomalies are poorly understood. In this study the ...
    • Winter storms accelerate the demise of sea ice in the Atlantic Sector of the Arctic Ocean 

      Graham, Robert M.; Itkin, Polona; Meyer, Amelie; Sundfjord, Arild; Spreen, Gunnar; Smedsrud, Lars H.; Liston, Glen E.; Cheng, Bin; Cohen, Lana; Divine, Dmitry; Fer, Ilker; Fransson, Agneta; Gerland, Sebastian; Haapala, Jari; Hudson, Stephen R.; Johansson, Malin; King, Jennifer A.; Merkouriadi, Ioanna; Peterson, Algot Kristoffer; Provost, Christine; Randelhoff, Achim; Rinke, Annette; Rösel, Anja; Sennechael, Nathalie; Walden, Von P.; Duarte, Pedro; Assmy, Philipp; Steen, Harald; Granskog, Mats A. (Peer reviewed; Journal article, 2019-06-25)
      A large retreat of sea-ice in the ‘stormy’ Atlantic Sector of the Arctic Ocean has become evident through a series of record minima for the winter maximum sea-ice extent since 2015. Results from the Norwegian young sea ICE ...
    • Wintertime cyclone/anticyclone activity over China and its relation to upper tropospheric jets 

      Chen, Lei; Tan, Benkui; Kvamstø, Nils Gunnar; Johannessen, Ola M. (Peer reviewed; Journal article, 2014-01-16)
      In this study, the wintertime cyclone/anticyclone activity and its variability over China are examined based on the National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis ...
    • Wintertime fCO2 variability in the subpolar North Atlantic since 2004 

      Fröb, Friederike; Olsen, Are; Becker, Meike; Chafik, Leon Martin; Johannessen, Truls; Reverdin, Gilles; Omar, Abdirahman (Peer reviewed; Journal article, 2019)
      Winter data of surface ocean temperature (SST), salinity (SSS) and CO2 fugacity (fCO2) collected on the VOS M/V Nuka Arctica in the subpolar North Atlantic between 2004 and 2017 are used to establish trends, drivers, and ...