Now showing items 3-22 of 501

    • 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. (Copernicus Publications, 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 ...
      Journal article
    • 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 (Copernicus Publications, 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 ...
      Journal article
    • 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. (Copernicus Publications, 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 ...
      Journal article
    • Akvakultur og små vindturbinar: Eit moglegheitsstudie av i kva grad små vindturbinar kan dekkje energiforbruket ved norske oppdrettsanlegg 

      Wiken, Laura Steinsbø (The University of Bergen, 2018-06-21)
      The world’s population is growing rapidly, and it will become necessary, to a greater extent, to use the ocean for harvesting food. Norway is the largest exporter of salmon in the world. Prognosis says that aquaculture ...
      Master thesis
    • Analyse av energi, eksergi og eksergoøkonomi for en stempelmotorbasert CHP-enhet kombinert med en organisk Rankine-syklus (ORC) 

      Knutsen, Jørgen (The University of Bergen, 2015-08-17)
      Waste heat recovery is a concept that is relevant for reducing consumption and emissions from thermal machinery. Waste heat recovery can performed in two ways: by Combined Heat and Power production (CHP) or Waste Heat ...
      Master thesis
    • Analyses of the potential role of hydrogen for Norway in the transition to a zero-emission society 

      Solheimslid, Tore (The University of Bergen, 2017-06-23)
      The objective of this thesis is to analyze the potential role of hydrogen for Norway in the transition to a zero-emission society. The main sector of focus is the transport sector. Here, socioeconomic analyses are carried ...
      Master thesis
    • Analysis of 3 years of precipitation measurements from the Micro Rain Radar located at the Geophysical Institute 

      Bergheim, Lillian (The University of Bergen, 2013-11-20)
      An analysis of three years of vertically pointing Micro Rain Radar (MRR) data from the measurement platform at the Geophysical Institute has been performed. The measurement period started at 13.04.2010 and ended at 12.04.2013. ...
      Master thesis
    • Analysis of a low-level coastal jet off the western coast of Norway 

      Christakos, Konstantinos; Varlas, Georgios; Reuder, Joachim; Katsafados, Petros; Papadopoulos, Anastasios (Elsevier, 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 ...
      Journal article
    • Analysis of CryoSat’s radar altimeter waveforms over different Arctic sea ice regimes 

      Zygmuntowska, Marta; Khvorostovsky, Kirill (The University of Bergen, 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 ...
      Journal article
    • Analysis of the vertical temperature structure in the Bergen valley, Norway, and its connection to pollution episodes 

      Wolf, Tobias; Esau, Igor; Reuder, Joachim (WileyAmerican Geophysical Union, 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 ...
      Journal article
    • Annual and Seasonal Mean Net Evaporation Rates of the Red Sea Water during Jan 1958 - Dec 2007 

      Nassir, Sahbaldeen Abdulaziz (The University of Bergen, 2012-10-01)
      Data set including sea level, temperature, salinity, and current from Simple Ocean Data Assimilation (SODA) is used in this study to estimate the mean net annually and seasonally evaporation rates. Then wind data is used ...
      Master thesis
    • Anthropogenic increase of oceanic pCO2 in the Barents Sea surface water 

      Omar, Abdirahman M.; Johannessen, Truls; Kaltin, Staffan; Olsen, Are (American Geophysical Union, 2003-12-26)
      We evaluate the change of surface water CO2 partial pressure ( pCO2 sw) in the Barents Sea (BS) between 1967 and 2000–2001. We use temperature (T) data collected during a survey in the BS in 1967 and a relationship between ...
      Peer reviewedJournal article
    • Application of the unmanned Offshore Sensing SailBuoy for validation of ocean model simulations and remote sensing data in the North Atlantic 

      Borge, Ragnhild Stegali (The University of Bergen, 2015-12-01)
      The Offshore Sensing SailBuoy, is a remotely controlled, wind driven unmanned ocean vehicle. It sampled near surface properties during a mission in the North Atlantic in June - August 2014. Three parameters were recorded, ...
      Master thesis
    • Aragonite saturation states and pH in western Norwegian fjords: Seasonal cycles and controlling factors, 2005-2009 

      Omar, Abdirahman; Skjelvan, Ingunn; Erga, Svein Rune; Olsen, Are (Copernicus Publications, 2016-07-26)
      The uptake of anthropogenic carbon dioxide (CO2) by the ocean leads to a process known as ocean acidification (OA), which lowers the aragonite saturation state (ΩAr) and pH, and this is poorly documented in coastal ...
      Journal article
    • Arctic Ocean carbon biogeochemistry under climate change and ocean acidification 

      Silyakova, Anna (The University of Bergen, 2013-05-10)
      Human-induced CO2 emissions to the atmosphere cause climate change and ocean acidification. The strongest indicators of climate change and ocean acidification are expected to be found in the Arctic Ocean (AO). The AO ...
      Doctoral thesis
    • The Arctic Ocean in a Fresh and Warm Future 

      Nummelin, Aleksi (The University of Bergen, 2016-10-28)
      The Arctic Ocean remains one of the least known ocean regions due to its remote location, year-round sea ice cover, and harsh weather conditions. Today, knowledge of the Arctic atmosphere-sea ice-ocean system increases ...
      Doctoral thesis
    • The Arctic Sea Ice - Melting During Summer or not Freezing in Winter? 

      Skaret, Henriette Bærheim (The University of Bergen, 2016-06-01)
      The Arctic sea ice cover has retreated rapidly during the last three decades, concurrent with recent global temperature increase both in the atmosphere and in the ocean. The sea ice cover has experienced a retreat in extent ...
      Master thesis
    • Arctic sea ice altimetry - advances and current uncertainties 

      Zygmuntowska, Marta (The University of Bergen, 2014-06-11)
      One of the most prominent features of global climate change is the reduction in Arctic sea ice thickness. The main tool to derive sea ice thickness on an Arctic wide scale is altimetry from satellites, yet current estimates ...
      Doctoral thesis
    • Arctic sea ice and Eurasian climate: A review 

      Gao, Yongqi; Sun, Jianqi; Li, Fei; He, Shengping; Sandven, Stein; Yan, Qing; Zhang, Zhongshi; Lohmann, Katja; Keenlyside, Noel; Furevik, Tore; Suo, Lingling (Science Press, 2014-11-28)
      The Arctic plays a fundamental role in the climate system and has shown significant climate change in recent decades, including the Arctic warming and decline of Arctic sea-ice extent and thickness. In contrast to the ...
      Journal article
    • The Arctic Summer Cloud Ocean Study (ASCOS): Overview and experimental design 

      Tjernström, Michael; Leck, Caroline; Birch, Cathryn E.; Bottenheim, Jan W.; Brooks, Barbara J.; Brooks, Ian M.; Bäcklin, Leif; Chang, Rachel; de Leeuw, Gerrit; Di Liberto, Luca; De La Rosa, Sara; Granath, Eva; Graus, Martin; Hänsel, Armin; Heintzenberg, Jost; Held, Andreas; Hind, Andrew; Johnston, Paul; Knulst, Johan C.; Martin, Maria; Matrai, Patricia A.; Mauritsen, Thorsten; Müller, Markus; Norris, Sarah J.; Orellana, Mónica V.; Orsini, Douglas A.; Paatero, Jussi; Persson, P. Ola G.; Gao, Qiuju; Rauschenberg, Carlton; Ristovski, Zoran; Sedlař, Joseph; Shupe, Matthew D.; Sierau, Berko; Sirevaag, Anders; Sjögren, Staffan; Stetzer, Olaf; Swietlicki, Erik; Szczodrak, Malgorzata; Vaattovaara, Petri; Wahlberg, Nils; Westberg, Maria; Wheeler, Cassie R. (Copernicus Publications, 2014-03-19)
      The climate in the Arctic is changing faster than anywhere else on earth. Poorly understood feedback processes relating to Arctic clouds and aerosol–cloud interactions contribute to a poor understanding of the present ...
      Journal article