Blar i Geophysical Institute på tittel

Viser treff 979-998 av 1186

    • Sparse observations induce large biases in estimates of the global ocean CO2 sink: An ocean model subsampling experiment 

      Hauck, Judith; Nissen, Cara; Landschützer, Peter; Rödenbeck, Christian; Bushinsky, Seth; Olsen, Are (Journal article; Peer reviewed, 2023)
      Estimates of ocean CO2 uptake from global ocean biogeochemistry models and pCO2-based data products differ substantially, especially in high latitudes and in the trend of the CO2 uptake since 2000. Here, we assess the ...

    • Spatial and temporal variability of currents and transport of warm waters towards the Arctic Ocean with focus on the flow towards the Greenland-Scotland ridge and the through flow area at the eastern side of the Fram Strait: Analysis and synthesis 

      Knutsen, Øyvind (Doctoral thesis, 2009-06-30)

    • Spatial Patterns, Mechanisms, and Predictability of Barents Sea Ice Change 

      Efstathiou, Evangelia; Eldevik, Tor; Årthun, Marius; Lind, Sigrid (Journal article; Peer reviewed, 2022)
      Recent Arctic winter sea ice loss has been most pronounced in the Barents Sea. Here we explore the spatial structure of Barents Sea ice change as observed over the last 40 years. The dominant mode of winter sea ice ...

    • Spatial variability of nocturnal stability regimes in an operational weather prediction model 

      Kähnert, Marvin; Sodemann, Harald; Remes, Teresa Maaria; Fortelius, Carl; Bazile, Eric; Esau, Igor (Journal article; Peer reviewed, 2022)
      Forecast errors in near-surface temperatures are a persistent issue for numerical weather prediction models. A prominent example is warm biases during cloud-free, snow-covered nights. Many studies attribute these biases ...

    • Springtime nitrogen oxides and tropospheric ozone in Svalbard: results from the measurement station network 

      Dekhtyareva, Alena; Hermanson, Mark H.; NIkulina, Anna; Hermansen, Ove; Svendby, Tove Marit; Holmén, Kim; Graversen, Rune Grand (Journal article; Peer reviewed, 2022)
      Svalbard is a remote and scarcely populated Arctic archipelago and is considered to be mostly influenced by long-range-transported air pollution. However, there are also local emission sources such as coal and diesel power ...

    • The stable atmospheric boundary layer over snow-covered sea ice: Model evaluation with fine-scale ISOBAR18 observations 

      Lorenz, Torge; Mayer, Stephanie; Kral, Stephan Thomas; Suomi, Irene; Steeneveld, Gert Jan; Holtslag, Albert A.M. (Journal article; Peer reviewed, 2022)
      A realistic representation of the stable atmospheric boundary layer in numerical weather prediction (NWP) and climate models is still a challenge. We study the evolution of a stable boundary layer over snow-covered sea ice ...

    • Stable Isotope Composition of Surface Vapour and Precipitation at the Southwest Coast of Norway 

      Weng, Yongbiao (Doctoral thesis, 2021-04-16)
      A better understanding of the water cycle has become even more crucial under the present condition of climate change. The stable isotopes of hydrogen and oxygen have been used for decades as powerful tracers to provide ...

    • A standard protocol for describing the evaluation of ecological models 

      Planque, Benjamin; Aarflot, Johanna Myrseth; Buttay, Lucie; Carroll, JoLynn; Fransner, Sara Filippa Krusmynta; Hansen, Cecilie; Husson, Berengere; Langangen, Øystein Ole Gahr; Lindstrøm, Ulf Ove; Pedersen, Torstein; Primicerio, Raul; Sivel, Elliot Manuarii; Skogen, Morten D.; Strombom, Evelyn; Stige, Leif Christian; Varpe, Øystein; Yoccoz, Nigel (Journal article; Peer reviewed, 2022)
      Numerical models of ecological systems are increasingly used to address complex environmental and resource management questions. One challenge for scientists, managers, and stakeholders is to appraise how well suited these ...

    • Statistic and coherence response of ship-based lidar observations to motion compensation 

      Duscha, Christiane; Bakhoday Paskyabi, Mostafa; Reuder, Joachim (Journal article; Peer reviewed, 2020)
      Ship-based profiling Lidar systems experience a strong influence of rotational and translational motion on beam direction and hence the line-of-sight velocity. This motion error is inherited by the retrieved 3-dimensional ...

    • A statistical gap-filling method to interpolate global monthly surface ocean carbon dioxide data 

      Jones, Steve D.; Le Quéré, Corinne; Rödenbeck, Christian; Manning, Andrew C.; Olsen, Are (Peer reviewed; Journal article, 2015-10-24)
      We have developed a statistical gap-filling method adapted to the specific coverage and properties of observed fugacity of surface ocean CO2 (fCO2). We have used this method to interpolate the Surface Ocean CO2 Atlas (SOCAT) ...

    • A status assessment of selected data synthesis products for ocean biogeochemistry 

      Lange, Nico; Tanhua, Toste; Pfeil, Benjamin; Bange, Hermann W.; Lauvset, Siv Kari; Grégoire, Marilaure; Bakker, Dorothee C. E.; Jones, Stephen Daniel; Fiedler, Björn; O’Brien, Kevin M.; Körtzinger, Arne (Journal article; Peer reviewed, 2023-04-26)
      Ocean data synthesis products for specific biogeochemical essential ocean variables have the potential to facilitate today’s biogeochemical ocean data usage and comply with the Findable Accessible Interoperable and Reusable ...

    • A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century 

      Pnyushkov, A.V.; Polyakov, Igor V.; Alekseev, G.V.; Ashik, I.M.; Baumann, Till Martin; Carmack, E.; Ivanov, Vladimir; Rember, Robert (Journal article; Peer reviewed, 2021)
      Mooring observations in the eastern Eurasian Basin of the Arctic Ocean showed that mean 2013–2018 along-slope volume and heat (calculated relative to the freezing temperature) transports in the upper 800 m were 4.8 ± 0.1 ...

    • Still Arctic? — The changing Barents Sea 

      Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Reigstad, Marit; Sundfjord, Arild; Bogstad, Bjarte; Chierici, Melissa; Hop, Haakon; Renaud, Paul Eric; Smedsrud, Lars Henrik; Stige, Leif Christian; Årthun, Marius; Berge, Jørgen; Bluhm, Bodil Annikki Ulla Barbro; Borgå, Katrine; Bratbak, Gunnar; Divine, Dmitry V; Eldevik, Tor; Eriksen, Elena; Fer, Ilker; Fransson, Agneta; Gradinger, Rolf Rudolf; Granskog, Mats A.; Haug, Tore; Husum, Katrine; Johnsen, Geir; Jonassen, Marius Opsanger; Jørgensen, Lis Lindal; Kristiansen, Svein; Larsen, Aud; Lien, Vidar Surén; Lind, Sigrid; Lindstrøm, Ulf Ove; Mauritzen, Cecilie; Melsom, Arne; Mernild, Sebastian H.; Müller, Malte; Nilsen, Frank; Primicerio, Raul; Søreide, Janne; van der Meeren, Gro Ingleid; Wassmann, Paul (Journal article; Peer reviewed, 2023)
      The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. ...

    • Stochastic optimization models for offshore wind farm maintenance 

      Okoye, Emmanuel Chukwuma (Master thesis, 2018)
      The world is fast moving away from fossil fuel, to a more renewable and sustainable energy future.The offshore wind industry is a major player in the drive for renewable energy. In order for sustainability to be achieved,the ...

    • Stochastic Optimization of Battery Storage: An Analysis of its Potential 

      Stranden, Runar Skorge (Master thesis, 2023-06-01)

    • Stormbaner ved ulikt isdekke i Labradorhavet 

      Byrkjedal, Øyvind (Master thesis, 2002)
      The seaice in the Arctic is an important component in the climate system, and plays an important role by interacting with atmospheric circulation trough surface-albedo and energy-exchanges. To study the atmospheric response ...

    • Storms drive outgassing of CO2 in the subpolar Southern Ocean 

      Nicholson, S.-A.; Whitt, D. B.; Fer, Ilker; du Plessis, M; Lebéhot, A. D.; Swart, S.; Sutton, A. J.; Monteiro, M. S. (Journal article; Peer reviewed, 2022)
      The subpolar Southern Ocean is a critical region where CO2 outgassing influences the global mean air-sea CO2 flux (FCO2). However, the processes controlling the outgassing remain elusive. We show, using a multi-glider ...

    • Storskala konvertering av biomasse til bio-olje og fraksjonering til veldefinerte produkter 

      Hermundsgård, Dag Helge (Master thesis, 2019-08-30)
      Dagens internasjonale samfunn har et stort forbruk av energi, og energibehovet øker kraftig med økt industrialisering ogteknologisk utvikling. Fossile energikilder har i stor grad dekket dette behovet i mange år, men dette ...

    • Strandforskyvningsundersøkelser og kartlegging av tsunamisedimenter i Nordland 

      Drange, Ingrid (Master thesis, 2003)
      I Nordland er sedimentene i seks glasiale basseng i Hommelstø, tre basseng på Straumøya og et basseng på Kjerringøy undersøkt, beskrevet og tolket litostratigrafisk. I de fleste basseng er isolasjonskontakten bestemt ...

    • Strategic optimization of offshore wind farm installation 

      Backe, Stian (Master thesis, 2017-08-01)
      This work describes logistical planning of offshore wind farm installation through mathematical optimization. Two optimization models are developed to analyse cost-effective port and vessel strategies for offshore installation ...