Now showing items 601-620 of 871

    • Potential and challenges of wind measurements using met-masts in complex topography for bridge design: Part I - Integral flow characteristics 

      Midjiyawa, zakari; Cheynet, Etienne; Reuder, Heinrich Joachim; Ágústsson, Hálfdán; Kvamsdal, Trond (Journal article; Peer reviewed, 2021-03-10)
      The paper investigates the local topographic effect on the mean and integral flow characteristics recorded by sonic anemometers mounted on tall masts near the shoreline of three different Norwegian fjords. Two years of ...
    • Potential and challenges of wind measurements using met-masts in complex topography for bridge design: Part II – Spectral flow characteristics 

      Zakari, Aoudou Midjiyawa; Cheynet, Etienne; Reuder, Joachim; Ágústsson, Hálfdán; Kvamsdal, Trond (Journal article; Peer reviewed, 2021)
      This study quantifies the influence of the local topography on sonic anemometer measurements mounted on tall met-masts deployed in Norwegian fjords. This assessment is done by analysing the second-order structure of ...
    • Potential and limitations in estimating sensible-heat-flux profiles from consecutive temperature profiles using remotely-piloted aircraft systems 

      Båserud, Line; Reuder, Joachim; Jonassen, Marius Opsanger; Bonin, Timothy; Chilson, Phillip B.; Jiménez, Maria A.; Durand, Pierre (Peer reviewed; Journal article, 2020)
      Profiles of the sensible heat flux are key to understanding atmospheric-boundary-layer (ABL) structure and development. Based on temperature profiling by a remotely-piloted aircraft system (RPAS), the Small Unmanned ...
    • Potential changes in the connectivity of marine protected areas driven by extreme ocean warming 

      Lima, Luciana S.; Gherardi, Douglas Francisco Marcolino; Pezzi, Luciano P.; Goncalves Dos Passos, Leilane; Kajiya Endo, Clarissa Akemi; Quimbayo, Juan Pablo (Journal article; Peer reviewed, 2021)
      Projected future climate scenarios anticipate a warmer tropical ocean and changes in surface currents that will likely influence the survival of marine organisms and the connectivity of marine protected areas (MPAs) networks. ...
    • Pre-bloom dynamics of the Subpolar North Atlantic microbial food web 

      Paulsen, Maria Lund (Master thesis, 2013-02-18)
      The aim of this study was to investigate the microbial planktonic food web in the pre- bloom period of the Subpolar North Atlantic Ocean. Through repeated visits to the Icelandic Basin, Norwegian Basin, and on the Shetland ...
    • Predictive Analysis of Machine Learning Schemes in Forecasting of Offshore Wind 

      Bakhoday Paskyabi, Mostafa (Journal article; Peer reviewed, 2020)
      High variability of wind in the farm areas causes a drastic instability in the energy markets. Therefore, precise forecast of wind speed plays a key role in the optimal prediction of offshore wind power. In this study, we ...
    • Prediksjon av bergartsparametre fra logger 

      Thorsen, Camilla Reglund (Master thesis, 2001)
    • Preliminary results of the NORCOWE Direct Covariance Flux System for Ship based measurements 

      Flügge, Martin; Reuder, Joachim (Peer reviewed; Journal article, 2013)
      To cover the increased demand of renewable energy the development of offshore wind turbines that can be placed in deep water has started. Model results from Sullivan et al. [2] indicate that the ocean has the ability to ...
    • Present Temperature, Precipitation, and Rain‐on‐Snow Climate in Svalbard 

      Wickström, Siiri; Jonassen, Marius Opsanger; Cassano, John J.; Vihma, Timo Pekka (Journal article; Peer reviewed, 2020)
      The Svalbard Archipelago has undergone rapid warming in the recent decades leading to warmer and wetter winter conditions. This study relates the present (2013–2018) 2 m temperature, precipitation, and rain-on-snow (ROS) ...
    • Prevailing Surface Wind Direction during Air-Sea Heat Exchange 

      Ogawa, Fumiaki; Spengler, Thomas (Peer reviewed; Journal article, 2019)
      While the climatological-mean sensible and latent heat fluxes are remarkably well described using climatological-mean fields in the bulk flux formulas, this study shows that a significant fraction of the climatological-mean ...
    • Processing of sonic anemometer measurements for offshore wind turbine applications 

      Nybø, Astrid; Nielsen, Finn Gunnar; Reuder, Joachim (Peer reviewed; Journal article, 2019)
      Quality assured measurements from offshore masts may provide valuable information of the characteristics of the offshore wind field, which is of high relevance for simulations of offshore wind turbines' dynamic response. ...
    • Productivity in the Barents Sea - Response to recent climate variability 

      Dalpadado, Padmini; Arrigo, Kevin R.; Hjøllo, Solfrid Sætre; Rey, Francisco; Ingvaldsen, Randi; Sperfeld, Erik; van Dijken, Gert L.; Stige, Leif Christian; Olsen, Are; Ottersen, Geir (Peer reviewed; Journal article, 2014-05-01)
      The temporal and spatial dynamics of primary and secondary biomass/production in the Barents Sea since the late 1990s are examined using remote sensing data, observations and a coupled physical-biological model. Field ...
    • Projected changes in significant wave height toward the end of the 21st century: Northeast Atlantic 

      Aarnes, Ole Johan; Reistad, Magnar; Breivik, Øyvind; Bitner-Gregersen, Elzbieta M.; Eide, Lars Ingolf; Gramstad, Odin; Magnusson, Anne Karin; Natvig, Bent; Vanem, Erik (Peer reviewed; Journal article, 2017-04)
      Wind field ensembles from six CMIP5 models force wave model time slices of the northeast Atlantic over the last three decades of the 20th and the 21st centuries. The future wave climate is investigated by considering the ...
    • Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk 

      Gehlen, Marion; Séférian, Roland; Jones, Daniel O.B.; Roy, Tilla; Roth, Raphael; Barry, James P.; Bopp, Laurent; Doney, Scott C.; Dunne, John P.; Heinze, Christoph; Joos, Fortunat; Orr, James C.; Resplandy, Laure; Segschneider, Joachim; Tjiputra, Jerry (Peer reviewed; Journal article, 2014-12-11)
      This study aims to evaluate the potential for impacts of ocean acidification on North Atlantic deep-sea ecosystems in response to IPCC AR5 Representative Concentration Pathways (RCPs). Deep-sea biota is likely highly ...
    • Proof of concept for turbulence measurements with the RPAS SUMO during the BLLAST campaign 

      Båserud, Line; Reuder, Joachim; Jonassen, Marius Opsanger; Kral, Stephan; Bakhoday Paskyabi, Mostafa; Lothon, Marie (Peer reviewed; Journal article, 2016-10-06)
      The micro-RPAS (remotely piloted aircraft system) SUMO (Small Unmanned Meteorological Observer) equipped with a five-hole-probe (5HP) system for turbulent flow measurements was operated in 49 flight missions during the ...
    • Proof of concept for wind turbine wake investigations with the RPAS SUMO 

      Reuder, Joachim; Båserud, Line; Kral, Stephan; Kumer, Valerie-Marie; Wagenaar, Jan Willem; Knauer, Andreas (Peer reviewed; Journal article, 2016-09)
      The Small Unmanned Meteorological Observer (SUMO) has been operated in the vicinity of five research turbines of the Energy Research Centre of the Netherlands (ECN) at the test site Wieringermeer. The intention of the ...
    • Properties of the Yellow Sea Meteotsunamis in Spring 

      Kang, Yong-Seong (Master thesis, 2015-06-01)
      This paper documents the properties of the Yellow Sea meteotsunamis in spring based on a total num- ber of 49 meteotsunami events in spring (Mar-May) between 2002 and 2013 documented by the Korea Meteorological Administration ...
    • PVTx Properties of a Two-phase CO2 Jet from Ruptured Pipeline 

      Botnen, Helle Augdal; Omar, Abdirahman; Aavatsmark, Ivar; Alendal, Guttorm; Johannessen, Truls (Peer reviewed; Journal article, 2013)
      Span and Wagner equation of state (SW EOS) have been used to investigate changes in the thermodynamic properties of CO2 during a depressurization process from a pipeline into marine environment. The process is assumed to ...
    • Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources 

      Arnalds, Olafur; Ólafsson, Haraldur; Dagsson-Waldhauserova, Pavla (Peer reviewed; Journal article, 2014-12-02)
      Iceland has extremely active dust sources that result in large-scale emissions and deposition on land and at sea. The dust has a volcanogenic origin of basaltic composition with about 10% Fe content. We used two independent ...
    • Quantifying Errors in Observationally Based Estimates of Ocean Carbon Sink Variability 

      Gloege, Lucas; McKinley, Galen A.; Landschützer, Peter; Fay, Amanda R.; Frölicher, Thomas L.; Fyfe, John; Ilyana, Tatiana; Jones, Stephen Daniel; Lovenduski, Nicole; Rodgers, Keith B.; Schlunegger, Sarah; Takano, Yohei (Journal article; Peer reviewed, 2021)
      Reducing uncertainty in the global carbon budget requires better quantification of ocean CO2 uptake and its temporal variability. Several methodologies for reconstructing air-sea CO2 exchange from pCO2 observations indicate ...