Now showing items 1-20 of 892

    • The 11 year solar cycle UV irradiance effect and its dependency on the Pacific Decadal Oscillation 

      Guttu, Sigmund; Orsolini, Yvan J.; Stordal, Frode; Otterå, Odd Helge; Omrani, Nour-Eddine (Journal article; Peer reviewed, 2021)
      The stratospheric, tropospheric and surface impacts from the 11 year ultraviolet solar spectral irradiance (SSI) variability have been extensively studied using climate models and observations. Here, we demonstrate using ...
    • 2018 International Atmospheric Rivers Conference : Multi‐disciplinary studies and high‐impact applications of atmospheric rivers 

      Ramos, Alexandre; Wilson, Anna; DeFlorio, Michael; Barnes, Elizabeth A.; Garreaud, Rene; Gorodetskaya, Irina V.; Lavers, David A; Moore, Benjamin; Payne, Ashley; Smallcomb, Chris; Sodemann, Harald; Wehner, Michael; Ralph, Fred Martin (Peer reviewed; Journal article, 2019-07-26)
      Atmospheric rivers (ARs) play a vital role in shaping the hydroclimate of many regions globally, and can substantially impact water resource management, emergency response planning, and other socioeconomic entities. The ...
    • 2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern 

      Zhang, Yijia; Yin, Zhicong; Wang, Huijun; He, Shengping (Journal article; Peer reviewed, 2021)
      Extreme cold waves frequently occur in east of China that dramatically endanger ecological agriculture, power infrastructure and human life. In this study, we found that the 'Warm Arctic-Cold Siberia' pattern (WACS) ...
    • The 2021 Atlantic Niño and Benguela Niño Events: external forcings and air–sea interactions 

      Illig, Serena; Bacherely, Marie-Lou (Journal article; Peer reviewed, 2023)
      This paper presents a comprehensive analysis of the extreme Atlantic and Benguela Niño events that occurred during the boreal spring–summer of 2021. We conducted sensitivity experiments with a regional ocean–atmosphere ...
    • 230Th Normalization: New Insights on an Essential Tool for Quantifying Sedimentary Fluxes in the Modern and Quaternary Ocean 

      Costa, Kassandra M.; Hayes, Christopher T.; Anderson, Robert F.; Pavia, Frank J.; Bausch, Alexandra; Deng, Feifei; Dutay, Jean-Claude; Geibert, Walter; Heinze, Christoph; Henderson, Gideon M.; Hillaire-Marcel, Claude; Hoffmann, Sharon; Jaccard, Samuel L.; Jacobel, Allison W.; Kienast, Stephanie S.; Kipp, Lauren; Lerner, Paul; Lippold, Jörg; Lund, David; Marcantonio, Franco; McGee, David; McManus, Jerry F.; Mekik, Figen; Middleton, Jennifer L.; Missiaen, Lise; Not, Christelle; Pichat, Sylvain; Robinson, Laura F.; Rowland, George H.; Roy‐Barman, Matthieu; Tagliabue, Alessandro; Torfstein, Adi; Winckler, Gisela; Zhou, Yuxin (Journal article; Peer reviewed, 2020-01)
      230Th normalization is a valuable paleoceanographic tool for reconstructing high‐resolution sediment fluxes during the late Pleistocene (last ~500,000 years). As its application has expanded to ever more diverse marine ...
    • The 3 km Norwegian reanalysis (NORA3) – a validation of offshore wind resources in the North Sea and the Norwegian Sea 

      Solbrekke, Ida Marie; Sorteberg, Asgeir; Haakenstad, Hilde (Journal article; Peer reviewed, 2021)
      We validate a new high-resolution (3 km) numerical mesoscale weather simulation for offshore wind power purposes for the time period 2004–2016 for the North Sea and the Norwegian Sea. The 3 km Norwegian reanalysis (NORA3) ...
    • A 4.5 Year‐Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin 

      Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2020)
      From May 2014 to September 2018, a laser spectrometer analyzer provided a 4.5 years continuous record of water vapor isotopic composition at Ny-Ålesund (8 m above sea level, a.s.l.), Svalbard. It corresponds to the longest ...
    • Acidification of the Nordic Seas 

      Fransner, Sara Filippa Krusmynta; Fröb, Friederike; Tjiputra, Jerry; Goris, Nadine; Lauvset, Siv Kari; Skjelvan, Ingunn; Jeansson, Emil; Omar, Abdirahman; Chierici, Melissa; Jones, Elizabeth Marie; Fransson, Agneta; Ólafsdóttir, Sólveig R.; Johannessen, Truls; Olsen, Are (Journal article; Peer reviewed, 2022)
      Due to low calcium carbonate saturation states, and winter mixing that brings anthropogenic carbon to the deep ocean, the Nordic Seas and their cold-water corals are vulnerable to ocean acidification. Here, we present a ...
    • Advances in understanding and parameterization of small-scalephysical processes in the marine Arctic climate system: a review 

      Vihma, Timo; Pirazzini, R; Fer, Ilker; Renfrew, I.A.; Sedlar, J.; Tjernström, M.; Lüpkes, C.; Nygård, T.; Notz, D.; Weiss, J.; Marsan, D.; Cheng, B.; Birnbaum, G.; Gerland, S; Chechin, D.; Gascard, J.-C. (Peer reviewed; Journal article, 2014-09-10)
      The Arctic climate system includes numerous highly interactive small-scale physical processes in the atmosphere, sea ice, and ocean. During and since the International Polar Year 2007–2009, significant advances have been ...
    • Aerodynamic study of a suspension bridge deck by CFD simulations, wind tunnel tests and full-scale observations 

      Kusano, Ibuki; Cheynet, Etienne; Jakobsen, Jasna Bogunovic; Snæbjörnsson, Jonas Thor (Journal article; Peer reviewed, 2021)
      Assessing the aerodynamic characteristics of long-span bridges is fundamental for their design. Depending on the terrain complexity and local wind conditions, episodes of large angles of attack (AoA) of 15° may be observed. ...
    • Airborne observations of the Eyjafjalla volcano ash cloud over Europe during air space closure in April and May 2010 

      Schumann, U.; Weinzierl, B; Reitebuch, O; Schlager, H.; Minikin, A; Forster, C; Baumann, R; Sailer, T; Graf, K; Mannstein, H.; Voigt, C; Rahm, S; Simmet, R; Scheibe, M; Lichtenstern, M; Stock, P; Ruba, H; Schauble, D; Tafferner, A; Rautenhaus, M; Gerz, T; Ziereis, H; Krautstrunk, M; Mallaun, C; Gayet, JF; Lieke, K; Kandler, K; Ebert, M; Weinbruch, S; Stohl, Andreas; Gasteiger, J; Gross, S; Freudenthaler, V; Wiegner, M; Ansmann, A; Tesche, M; Ólafsson, Haraldur; Sturm, K (Peer reviewed; Journal article, 2011-03-11)
      Airborne lidar and in-situ measurements of aerosols and trace gases were performed in volcanic ash plumes over Europe between Southern Germany and Iceland with the Falcon aircraft during the eruption period of the Eyjafjalla ...
    • Aircraft-based observations and high-resolution simulations of an Icelandic dust storm 

      Blechschmidt, Anne-Marlene; Kristjansson, Jon Egill; Ólafsson, Haraldur; Burkhart, John; Hodnebrog, Øivind; Rosenberg, P.D. (Peer reviewed; Journal article, 2012-11-16)
      The first aircraft-based observations of an Icelandic dust storm are presented. The measurements were carried out over the ocean near Iceland's south coast in February 2007. This dust event occurred in conjunction with an ...
    • Along‐stream, seasonal, and interannual variability of the North Icelandic Irminger Current and East Icelandic Current around Iceland 

      Casanova-Masjoan, M; Perez-Hernandez, MD; Pickart, Robert S.; Valdimarsson, Héðinn; Ólafsdóttir, SR; Macrander, Andreas; Grisolía-Santos, D; Torres, Daniel J.; Jónsson, Steingrímur; Våge, Kjetil; Lin, Peigen; Hernández-Guerra, A (Journal article; Peer reviewed, 2020)
      Data from repeat hydrographic surveys over the 25-year period 1993 to 2017, together with satellite altimetry data, are used to quantify the temporal and spatial variability of the North Icelandic Irminger Current (NIIC), ...
    • Amplification of synoptic to annual variability of West African summer monsoon rainfall under global warming 

      Akinsanola, Akintomide Afolayan; Zhou, Wen; Zhou, Tianjun; Keenlyside, Noel (Journal article; Peer reviewed, 2020)
      Increased knowledge of future changes in rainfall variability is needed to reduce vulnerability to potential impacts of global warming, especially in highly vulnerable regions like West Africa. While changes in mean and ...
    • Analysis of a low-level coastal jet off the western coast of Norway 

      Christakos, Konstantinos; Varlas, Georgios; Reuder, Joachim; Katsafados, Petros; Papadopoulos, Anastasios (Peer reviewed; Journal article, 2014)
      Offshore wind installations depend strongly on an improved knowledge of the atmospheric and ocean conditions affecting the marine atmospheric boundary layer (MABL). In particular the better understanding of atmospheric ...
    • Analysis of CryoSat’s radar altimeter waveforms over different Arctic sea ice regimes 

      Zygmuntowska, Marta; Khvorostovsky, Kirill (Journal article, 2014-06-11)
      Satellite altimetry has been used to derive information about sea ice thickness in the Arctic already for several decades. As part of the algorithms applied the shape of the radar signal is used to identify leads, the open ...
    • Analysis of offshore wind spectra and coherence under neutral stability condition using the two LES models PALM and SOWFA 

      Ning, Xu; Krutova, Maria; Paskyabi, Mostafa Bakhoday (Journal article; Peer reviewed, 2021)
      The Parallelized Large-Eddy Model (PALM) and the Simulator for Wind Farm Applications (SOWFA) have been used to simulate the marine boundary layer flows under neutral stability condition. The present work aims to investigate ...
    • Analysis of the vertical temperature structure in the Bergen valley, Norway, and its connection to pollution episodes 

      Wolf, Tobias; Esau, Igor; Reuder, Joachim (Peer reviewed; Journal article, 2014-09)
      The vertical temperature profile in the lowest 1000m of the atmosphere determines a number of important physical processes and meteorological phenomena such as high concentrations of anthropogenic air pollutants in urban ...
    • Analysis of tidal currents in the North Sea from shipboard acoustic Doppler current profiler data 

      Vindenes, Håvard; Orvik, Kjell Arild; Søiland, Henrik; Wehde, Henning (Peer reviewed; Journal article, 2018-01-12)
      North Sea tidal currents are determined by applying harmonic analysis to ship-borne acoustic Doppler current profiler data recorded from 1999 to 2016, covering large areas of the northern North Sea. Direct current measurement ...
    • Analysis of turbulence models fitted to site, and their impact on the response of a bottom-fixed wind turbine 

      Nybø, Astrid; Nielsen, Finn Gunnar; Godvik, Marte (Journal article; Peer reviewed, 2021)
      This study compares a wind field recommended by the wind turbine design standards to more realistic wind fields based on measurements. The widely used Mann spectral tensor model with inputs recommended by the standard, is ...