Now showing items 1-20 of 815

    • Mass balance of the Greenland Ice Sheet from 1992 to 2018 

      Shepherd, Andrew; Ivins, Erik; Rignot, Eric; Smith, Ben; Van Den Broeke, Michiel; Velicogna, Isabella; Whitehouse, Pippa; Briggs, Kate; Joughin, Ian; Krinner, Gerhard; Nowicki, Sophie; Payne, Tony; Scambos, Ted; Schlegel, Nicole; Geruo, A; Agosta, Cécile; Ahlstrøm, Andreas; Babonis, Greg; Barletta, Valentina; Bjørk, Anders A.; Blazquez, Alejandro; Bonin, Jennifer; Colgan, William; Csatho, Beata; Cullather, Richard; Engdahl, Marcus E.; Felikson, Denis; Fettweis, Xavier; Forsberg, Rene; Hogg, Anna E.; Hubert, Gallee; Gardner, Alex; Gilbert, Lin; Gourmelen, Noel; Groh, Andreas; Gunter, Brian; Hanna, Edward; Harig, Christopher; Helm, Veit; Horvath, Alexander; Horwath, Martin; Khan, Shfaqat; Kjeldsen, Kristian K.; Hannes, Konrad; Langen, Peter L.; Lecavalier, Benoit; Loomis, Bryant; Luthcke, Scott; McMillan, Malcolm; Melini, Daniele; Mernild, Jacob Sebastian Haugaard; Mohajerani, Yara; Moore, Philip; Mottam, Ruth; Mouginot, Jérémie; Moyano, Gorka; Muir, Alan; Nagler, Thomas; Nield, Grace; Nilsson, Johan; Noel, Brice; Otosaka, Ines; Pattle, Mark E.; Peltier, Richard W.; Pie, Nadège; Rietbroek, Roelof; Rott, Helmut; Sørensen, Louise Sandberg; Sasgen, Ingo; Save, Himanshu; Scheuchl, Bernd; Schrama, Ernst; Schröder, Ludwig; Seo, Ki-Weon; Simonsen, Sebastian B.; Slater, Thomas; Spada, Giorgio; Sutterley, Tyler; Talpe, Matthieu; Tarasov, Lev; Willem, Jan van de Berg; Van Der Wal, Wouter; Van Wessem, Melchior; Vishwakarma, Barmha Dutt; Wiese, David; Wilton, David; Wagner, Thomas; Wouters, Bert; Wuite, Jan (Journal article; Peer reviewed, 2019-12-10)
      The Greenland Ice Sheet has been a major contributor to global sea-level rise in recent decades1,2, and it is expected to continue to be so3. Although increases in glacier flow4,5,6 and surface melting7,8,9 have been driven ...
    • Influence of Diabatic Effects and Tropopause Structure on Baroclinic Development 

      Haualand, Kristine Flacké (Doctoral thesis, 2021-06-10)
      Midlatitude cyclones play an important role in midlatitude weather and global climate. While baroclinic instability is the dominant mechanism for their intensification, midlatitude cyclone development is also influenced ...
    • Direct and Indirect Effects of Surface Fluxes on Moist Baroclinic Development in an Idealized Framework 

      Haualand, Kristine Flacké; Spengler, Thomas (Journal article; Peer reviewed, 2020-09)
      The convoluted role of surface sensible and latent heat fluxes on moist baroclinic development demands a better understanding to disentangle their local and remote effects. Including diabatic effects in the Eady model, the ...
    • Relating model bias and prediction skill in the equatorial Atlantic 

      Counillon, Francois; Keenlyside, Noel; Toniazzo, Thomas; Koseki, Shunya; Demissie, Teferi Dejene; Bethke, Ingo; Wang, Yiguo (Journal article; Peer reviewed, 2021)
      We investigate the impact of large climatological biases in the tropical Atlantic on reanalysis and seasonal prediction performance using the Norwegian Climate Prediction Model (NorCPM) in a standard and an anomaly coupled ...
    • Diabatic heating governs the seasonality of the Atlantic Niño 

      Nnamchi, Hyacinth C; Latif, Mojib; Keenlyside, Noel; Kjellsson, Joakim; Richter, Ingo (Journal article; Peer reviewed, 2021)
      The Atlantic Niño is the leading mode of interannual sea-surface temperature (SST) variability in the equatorial Atlantic and assumed to be largely governed by coupled ocean-atmosphere dynamics described by the Bjerknes-feedback ...
    • 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 ...
    • Cancellation of the precessional cycle in δ18O records during the Early Pleistocene 

      Morée, Anne; Sun, Tianyi; Bretones, Anaïs; Straume, Eivind Olavson; Nisancioglu, Kerim Hestnes; Gebbie, Geoffrey (Journal article; Peer reviewed, 2021)
      The dominant pacing of glacial‐interglacial cycles in deep‐ocean δ18O records changed substantially during the Mid‐Pleistocene Transition. The precessional cycle (∼23 ky) is absent during the Early Pleistocene, which we ...
    • Basin Interactions and predictability 

      Keenlyside, Noel; Kosaka, Yu; Vigaud, Nicholas; Robertson, Andrew; Wang, Yiguo; Dommenget, Dietmar; Luo, Jing-Jia; Matei, Daniela (Chapter, 2020)
    • A Satellite Era Warming Hole in the Equatorial Atlantic Ocean 

      Nnamchi, Hyacinth C; Latif, Mojib; Keenlyside, Noel; Park, Wonsun (Journal article; Peer reviewed, 2020)
      Observations during the satellite era 1979–2018 only depict small sea surface temperature (SST) trends over the Equatorial Atlantic cold tongue region in boreal summer. This lack of surface warming of the cold tongue, ...
    • Intermittency of Arctic–mid-latitude teleconnections: stratospheric pathway between autumn sea ice and the winter North Atlantic Oscillation 

      Siew, Yu Feng; Li, Camille; Sobolowski, Stefan Pieter; King, Martin Peter (Journal article; Peer reviewed, 2020)
      There is an observed relationship linking Arctic sea ice conditions in autumn to mid-latitude weather the following winter. Of interest in this study is a hypothesized stratospheric pathway whereby reduced sea ice in the ...
    • Exploring Arctic-midlatitude teleconnections using observations and numerical models 

      Siew, Yu Feng (Doctoral thesis, 2021-05-27)
      The Arctic is warming at a much faster rate than the rest of the globe, with large declines in sea ice, snow cover and permafrost over the last decades. These profound changes have been proposed to influence the midlatitude ...
    • The Iceland-Faroe Slope Jet: a conduit for dense water toward the Faroe Bank Channel overflow 

      Semper, Stefanie; Pickart, Robert S.; Våge, Kjetil; Larsen, Karin Margretha H.; Hátún, Hjálmar; Hansen, Bogi (Journal article; Peer reviewed, 2020)
      Dense water from the Nordic Seas passes through the Faroe Bank Channel and supplies the lower limb of the Atlantic Meridional Overturning Circulation, a critical component of the climate system. Yet, the upstream pathways ...
    • Meteorological conditions and cloud effects on surface radiation balance near Helheim glacier and Jakobshavn isbræ (Greenland)using ground-based observations. 

      Djoumna, G.; Mernild, Jacob Sebastian Haugaard; Holland, D.M. (Journal article; Peer reviewed, 2021)
      The surface radiation budget is an essential component of the total energy exchange between the atmosphere and the Earth’s surface. Measurements of radiative fluxes near/on ice surfaces are sparse in the polar regions, ...
    • Sea-state contributions to sea-level variability in the European Seas 

      Bonaduce, Antonio; Staneva, Joanna; Grayek, Sebastian; Bidlot, Jean-Raymond; Breivik, Øyvind (Journal article; Peer reviewed, 2020)
      The contribution of sea-state-induced processes to sea-level variability is investigated through ocean-wave coupled simulations. These experiments are performed with a high-resolution configuration of the Geestacht COAstal ...
    • Evaluation of a sub-kilometre NWP system in an Arctic fjord-valley system in winter 

      Valkonen, Teresa Maaria; Stoll, Patrick; Batrak, Yurii; Køltzow, Morten Andreas Ødegaard; Schneider, Thea Maria; Stigter, Emmy E.; Aashamar, Ola B.; Støylen, Eivind; Jonassen, Marius Opsanger (Journal article; Peer reviewed, 2020)
      Terrain challenges the prediction of near-surface atmospheric conditions, even in kilometre-scale numerical weather prediction (NWP) models. In this study, the ALADIN-HIRLAM NWP system with 0.5 km horizontal grid spacing ...
    • Evaluation of different wind fields for the investigation of the dynamic response of offshore wind turbines 

      Nybø, Astrid; Nielsen, Finn Gunnar; Reuder, Joachim; Godvik, Marte; Churchfield, Matthew J. (Journal article; Peer reviewed, 2020)
      As the size of offshore wind turbines increases, a realistic representation of the spatiotemporal distribution of the incident wind field becomes crucial for modeling the dynamic response of the turbine. The International ...
    • The dynamic response of offshore wind turbines and their sensitivity to wind field models 

      Haaskjold Myrtvedt, Maylinn; Nybø, Astrid; Nielsen, Finn Gunnar (Journal article; Peer reviewed, 2020)
      As the rotor diameter of offshore wind turbines increases, an improved understanding of the structure of the turbulent wind field approaching the rotor is important. Present standards for computing wind loads are resting ...
    • Sea Surface Temperature and Ocean Heat Content during Tropical Cyclones Pam (2015) and Winston (2016) in the Southwest Pacific Region 

      Chandra, Ashneel; Kumar, Sushil (Journal article; Peer reviewed, 2021)
      The sea surface temperature (SST) and upper ocean heat content (OHC) have been explored along the track of two tropical cyclones (TCs), TC Pam (2015) and TC Winston (2016). These TCs severely affected the islands of Vanuatu ...
    • The Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer Project (ISOBAR) — Unique fine-scale observations under stable and very stable conditions 

      Kral, Stephan; Reuder, Joachim; Vihma, Timo Pekka; Suomi, Irene; Haualand, Kristine Flacké; Urbancic, Gabin; Greene, Brian R.; Steeneveld, Gert Jan; Lorenz, Torge; Maronga, Bjørn; Jonassen, Marius Opsanger; Ajosenpää, Hada; Båserud, Line; Chilson, Phillip B.; Holtslag, Albert A. M.; Jenkins, Alastair David; Kouznetsov, Rostislav; Mayer, Stephanie; Pillar-Little, Elizabeth A.; Rautenberg, Alexander; Schwenkel, Johannes; Seidl, Andrew; Wrenger, Burkhard (Journal article; Peer reviewed, 2021)
      The Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer Program (ISOBAR) is a research project investigating stable atmospheric boundary layer (SBL) processes, whose representation still poses ...
    • Mechanisms underlying recent Arctic atlantification 

      Asbjørnsen, Helene; Årthun, Marius; Skagseth, Øystein; Eldevik, Tor (Journal article; Peer reviewed, 2020-06-20)
      Recent warming and reduced sea ice concentrations in the Atlantic sector of the Arctic Ocean are the main signatures of ongoing Arctic “Atlantification.” The mechanisms driving the warming trends are nevertheless still ...