Browsing Geophysical Institute by Document Types "Peer reviewed"

Now showing items 81-100 of 837

    • Characteristics of Cold-Air Outbreak Events and Associated Polar Mesoscale Cyclogenesis over the North Atlantic Region 

      Terpstra, Annick; Renfrew, Ian A.; Sergeev, Denis (Journal article; Peer reviewed, 2021)
      Equatorward excursions of cold polar air masses into ice-free regions, so-called Cold Air Outbreaks (CAO), are frequently accompanied by the development of severe mesoscale weather features. Focusing on two key regions, ...

    • Characteristics of cyclones following different pathways in the Gulf Stream region 

      Tsopouridis, Leonidas; Spensberger, Clemens; Spengler, Thomas (Journal article; Peer reviewed, 2021)
      The Northwest Atlantic is a region of strong temperature gradients and hence is a favourable location for wintertime cyclone intensification co-located with the storm track. The temperature gradient is associated with both ...

    • Characterization of Terrain-Induced Turbulence by Large-Eddy Simulation for Air Safety Considerations in Airport Siting 

      Wang, Sai; De Roo, Frederik; Thobois, Ludovic; Reuder, Joachim (Journal article; Peer reviewed, 2022)
      Topography-induced turbulence poses a potential hazard for aviation safety, in particular during the final approach and landing. In this context, it is essential to assure that the impact of topography-induced turbulence ...

    • Characterization of the atmospheric environment during extreme precipitation events associated with atmospheric rivers in Norway - Seasonal and regional aspects 

      Michel, Clio; Sorteberg, Asgeir; Eckhardt, Sabine; Weijenborg, Christian; Stohl, Andreas; Cassiani, Massimo (Journal article; Peer reviewed, 2021)
      Extreme precipitation events in Norway in all seasons are often linked to atmospheric rivers (AR). We show that during the period 1979–2018 78.5% of the daily extreme precipitation events in Southwestern Norway are linked ...

    • Characterization of the SUMO Turbulence Measurement System for Wind Turbine Wake Assessment 

      Båserud, Line; Flügge, Martin; Bhandari, Anak; Reuder, Joachim (Peer reviewed; Journal article, 2014)
      The remotely piloted aircraft system (RPAS) SUMO (Small Unmanned Meteorological Observer) has been equipped with a miniaturized 5-hole probe sensor system for measurement of the 3-dimensional flow vector with a temporal ...

    • Characterization of turbulence in wind turbine wakes under different stability  conditions from static Doppler LiDAR measurements 

      Kumer, Valerie-Marie; Reuder, Joachim; Eikill, Rannveig (Peer reviewed; Journal article, 2017-03-05)
      Wake characteristics are of great importance for wind park performance and turbine loads. While wind tunnel experiments provided a solid base for the basic understanding of the structure and dynamics of wind turbine wakes, ...

    • Characterization of Wind-Sea- and Swell-Induced Wave Energy along the Norwegian Coast 

      Christakos, Konstantinos; Varlas, George; Cheliotis, Ioannis; Spyrou, Christos; Aarnes, Ole Johan; Furevik, Birgitte Rugaard (Journal article; Peer reviewed, 2020)
      The necessity to reduce CO2 emissions in combination with the rising energy demand worldwide makes the extensive use of renewable energy sources increasingly important. To that end, countries with long coastlines, such as ...

    • Climate based multi-year predictions of the Barents Sea cod stock. 

      Årthun, Marius; Bogstad, Bjarte; Daewel, Ute; Keenlyside, Noel; Sandø, Anne Britt; Schrum, Corinna; Ottersen, Geir (Peer reviewed; Journal article, 2018-10-24)
      Predicting fish stock variations on interannual to decadal time scales is one of the major issues in fisheries science and management. Although the field of marine ecological predictions is still in its infancy, it is ...

    • Climate change and safe design of ship structures 

      Bitner-Gregersen, Elzbieta M.; Vanem, Erik; Gramstad, Odin; Hørte, Torfinn; Aarnes, Ole Johan; Reistad, Magnar; Breivik, Øyvind; Magnusson, Anne Karin; Natvig, Bent (Peer reviewed; Journal article, 2018-02)
      The paper addresses projected changes of wave climate in the North Atlantic and their impact on the safe design of ships, with a particular focus given on associated uncertainties. The Fifth Assessment Report of the ...

    • Climate change in the North – past, present and future 

      Thiede, Jörn; Johannessen, Ola M. (Journal article; Peer reviewed, 2008)
      The Nordic countries have produced famous polar explorers and researchers who have generated climate research schools at a variety of locations. The dependence of these countries with respect to the lifelihood of their ...

    • Coastal ocean fronts and eddies imaged with ERS 1 synthetic aperture radar 

      Johannessen, Johnny A.; Shuchman, Robert A.; Digranes, G.; Lyzenga, D. R.; Wackerman, C.; Johannessen, Ola M.; Vachon, P. W. (Peer reviewed; Journal article, 1996-03-15)
      ERS 1 C band synthetic aperture radar (SAR) data were collected during the Norwegian Continental Shelf Experiment (NORCSEX) both in November 1991 during the ERS 1 commissioning phase and at different seasons in 1992 and ...

    • Coastal submesoscale processes and their effect on phytoplankton distribution in the southeastern Bay of Biscay 

      Rodriguez, Xabier Davila; Rubio, Anna; Artigas, Luis Felipe; Puillat, Ingrid; Manso-Narvarte, Ivan; Lazure, Pascal; Caballero, Ainhoa (Journal article; Peer reviewed, 2021)
      Submesoscale processes have a determinant role in the dynamics of oceans by transporting momentum, heat, mass, and particles. Furthermore, they can define niches where different phytoplankton species flourish and accumulate ...

    • COASTWATCH´95: ERS 1/2 SAR detection of natural film on the ocean surface 

      Espedal, Heidi A.; Johannessen, Ola M.; Johannessen, Johnny A.; Dano, E.; Lyzenga, D. R.; Knulst, Johan (Peer reviewed; Journal article, 1998-10-15)
      Ocean mesoscale phenomena such as eddies and current convergence zones can often be seen in synthetic aperture radar (SAR) images due to characteristic patterns caused by natural film induced damping of the waves. Such ...

    • Cold Air Mass Analysis of the Record-Breaking Cold Surge Event over East Asia in January 2016 

      Yamaguchi, Junpei; Kanno, Yuki; Chen, Guixing; Iwasaki, Toshiki (Peer reviewed; Journal article, 2019)
      An extreme cold surge event caused record-breaking low temperatures in East Asia during 20-25 January 2016. The planetary- and synoptic-scale feature of the event is investigated quantitatively using the isentropic cold ...

    • Combined influence of oceanic and atmospheric circulations on Greenland sea ice concentration 

      Chatterjee, Sourav; Raj, Roshin Pappukutty; Bertino, Laurent; Mernild, Jacob Sebastian Haugaard; Subeesh, Meethale P.; Murukesh, Nuncio; Ravichandran, Muthalagu (Journal article; Peer reviewed, 2021)
      The amount and spatial extent of Greenland Sea (GS) ice are primarily controlled by the sea ice export across the Fram Strait (FS) and by local seasonal sea ice formation, melting, and sea ice dynamics. In this study, using ...

    • A combined stokes drift profile under swell and wind sea 

      Breivik, Øyvind; Christensen, Kai Håkon (Journal article; Peer reviewed, 2020)
      A combined directional Stokes drift profile for swell and wind sea is presented. The profile can be used to calculate the shear under crossing seas and as such is relevant for Langmuir turbulence and Stokes–Coriolis forcing, ...

    • The COMBLE Campaign: A Study of Marine Boundary Layer Clouds in Arctic Cold-Air Outbreaks 

      Geerts, Bart; Giangrande, Scott E.; McFarquhar, Greg M.; Xue, Lulin; Abel, Steven J.; Comstock, Jennifer M.; Crewell, Susanne; DeMott, Paul J.; Ebell, Kerstin; Field, Paul; Hill, Thomas C. J.; Hunzinger, Alexis; Jensen, Michael P.; Johnson, Karen L.; Juliano, Timothy W.; Kollias, Pavlos; Kosovic, Branko; Lackner, Christian; Luke, Ed; Lüpkes, Christof; Matthews, Alyssa A.; Neggers, Roel; Ovchinnikov, Mikhail; Powers, Heath; Shupe, Matthew D.; Spengler, Thomas; Swanson, Benjamin E.; Tjernström, Michael; Theisen, Adam K.; Wales, Nathan A.; Wang, Yonggang; Wendisch, Manfred; Wu, Peng (Journal article; Peer reviewed, 2022)
      One of the most intense air mass transformations on Earth happens when cold air flows from frozen surfaces to much warmer open water in cold-air outbreaks (CAOs), a process captured beautifully in satellite imagery. Despite ...

    • Comparison between precipitation estimates of ground-based weather radar composites and GPM’s DPR rainfall product over Germany 

      Pejcic, Velibor; Saavedra Garfias, Pablo; Mühlbauer, Kai; Trömel, Silke; Simmer, Clemens (Journal article; Peer reviewed, 2020)
      We compare more than three years (between 2014 and 2018) of precipitation estimates over Germany from the Dual-frequency Precipitation Radar (DPR) operating on the core satellite of the Global Precipitation Mission (GPM) ...

    • Comparison of direct covariance flux measurements from an offshore tower and a buoy 

      Flügge, Martin; Bakhoday Paskyabi, Mostafa; Reuder, Joachim; Edson, James B.; Plueddemann, Albert J. (Peer reviewed; Journal article, 2016-05)
      Direct covariance flux (DCF) measurements taken from floating platforms are contaminated by wave-induced platform motions that need to be removed before computation of the turbulent fluxes. Several correction algorithms ...

    • A comparison of Langmuir turbulence parameterizations and key wave effects in a numerical model of the North Atlantic and Arctic Oceans 

      Ali, Alfatih; Christensen, Kai Håkon; Breivik, Øyvind; Bertino, Laurent; Malila, Mika Petteri; Raj, Roshin Pappukutty; Chassignet, Eric P.; Bakhoday Paskyabi, Mostafa (Peer reviewed; Journal article, 2019)
      Five different parameterizations of Langmuir turbulence (LT) effect are investigated in a realistic model of the North Atlantic and Arctic using realistic wave forcing from a global wave hindcast. The parameterizations ...