Recent Submissions

  • Global carbon budget 2014 

    Le Quéré, Corinne; Moriarty, Roisin; Andrew, Robbie; Peters, Glen Philip; Ciais, Philippe; Friedlingstein, Pierre; Jones, Samantha D.; Sitch, Stephen; Tans, Pieter; Arneth, Almut; Boden, Thomas A.; Bopp, Laurent; Bozec, Yann; Canadell, Josep G.; Chini, Louise P.; Chevallier, Frédéric; Cosca, Cathrine E.; Harris, Ian C.; Hoppema, Mario; Houghton, Richard A.; House, Joanna I.; Jain, Atul K.; Johannessen, Truls; Kato, Etsushi; Keeling, Ralph F.; Kitidis, Vassilis; Klein Goldewijk, Kees; Koven, Charles D.; Landa, Camilla Stegen; Landschützer, Peter; Lenton, Andrew; Lima, Ivan D.; Marland, Gregg; Mathis, Jeremy T.; Metzl, Nicolas; Nojiri, Yukihiro; Olsen, Are; Ono, Tsuneo; Peng, Shushi; Peters, Wouter; Pfeil, Benjamin; Poulter, Benjamin; Raupach, Michael R.; Regnier, Pierre; Rödenbeck, Christian; Saito, Shu; Salisbury, Joseph E.; Schuster, Ute; Schwinger, Jörg; Séférian, Roland; Segschneider, Joachim; Steinhoff, Tobias; Stocker, Benjamin D.; Sutton, Adrienne J.; Takahashi, Taro; Tilbrook, Bronte; van der Werf, Guido R.; Viovy, Nicolas; Wang, Yingping; Wanninkhof, Rik; Wiltshire, Andrew J.; Zeng, Ning (Copernicus Publications, 2015-05-08)
    Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is important to better understand the global carbon cycle, support the ...
    Journal article
  • Sea ice cover in Isfjorden and Hornsund, Svalbard (2000–2014) from remote sensing data 

    Muckenhuber, Stefan; Nilsen, Frank; Korosov, Anton; Sandven, Stein (Copernicus Publications, 2016-01-19)
    A satellite database including 16 555 satellite images and ice charts displaying the area of Isfjorden, Hornsund, and the Svalbard region has been established with focus on the time period 2000–2014. 3319 manual interpretations ...
    Journal article
  • Laboratory study of frazil ice accumulation under wave conditions 

    De La Rosa, Sara; Maus, Sønke (Copernicus Publications, 2012-02-09)
    Ice growth in turbulent seawater is often accompanied by the accumulation of frazil ice crystals at its surface, forming a grease ice layer. The thickness and volume fraction of this ice layer play an important role in ...
    Journal article
  • Recent wind driven high sea ice area export in the Fram Strait contributes to Arctic sea ice decline 

    Smedsrud, Lars Henrik; Sirevaag, Anders; Kloster, Kjell; Sorteberg, Asgeir; Sandven, Stein (Copernicus Publications, 2011-10-14)
    Arctic sea ice area has been decreasing for the past two decades. Apart from melting, the southward drift through Fram Strait is the main ice loss mechanism. We present high resolution sea ice drift data across 79° N from ...
    Journal article
  • Laboratory study of initial sea-ice growth: properties of grease ice and nilas 

    Naumann, Ann-Kristin; Notz, Dirk; Håvik, Lisbeth; Sirevaag, Anders (Copernicus Publications, 2012-07-10)
    We investigate initial sea-ice growth in an ice-tank study by freezing an NaCl solution of about 29 g kg−1 in three different setups: grease ice grew in experiments with waves and in experiments with a current and wind, ...
    Journal article
  • Snowfall in the Himalayas: An uncertain future from a little-known past 

    Viste, Ellen; Sorteberg, Asgeir (European Geosciences Union, 2015-06-03)
    Snow and ice provide large amounts of meltwater to the Indus, Ganges and Brahmaputra rivers. This study combines present-day observations and reanalysis data with climate model projections to estimate the amount of snow ...
    Journal article
  • Multi-scale variability of winds in the complex topography of southwestern Norway 

    Jonassen, Marius Opsanger; Ólafsson, Haraldur; Reuder, Joachim; Olseth, Jan Asle (Co-action publishing, 2012-01-02)
    Multi-scale variability of winds in the complex terrain of southwestern Norway is investigated using up to 20yr of observations from nine automatic weather stations and reanalysis data. Significant differences between the ...
    Journal article
  • Impacts of Atlantic multi-decadal variability on the Indo-Pacific and Northern Hemisphere climate 

    Svendsen, Lea (The University of Bergen, 2016-06-03)
    Earlier studies have shown that Atlantic multi-decadal variability (AMY) can impact climate variability globally. However the instrumental records are short compared to the timescale of AMY, and mechanisms for these impacts ...
    Doctoral thesis
  • The dynamic and thermodynamic structure of monsoon low-pressure systems during extreme rainfall events 

    Sørland, Silje Lund; Sorteberg, Asgeir (Co-action publishing, 2015-08-12)
    A cyclone-tracking algorithm is used to identify monsoon low-pressure systems (LPS) in the ERA-interim re-analysis (1979–2010). The LPS that are connected to observed extreme rainfall events are picked out and studied with ...
    Journal article
  • Directly measured currents and estimated transport pathways of Atlantic Water between 59.58N and the Iceland-Faroes-Scotland Ridge 

    Childers, Katelin; Flagg, Charles; Rossby, Thomas; Schrum, Corinna (Co-Action Publishing, 2015-11-24)
    Using vessel-mounted acoustic Doppler current profiler data from four different routes between Scotland, Iceland and Greenland, we map out the mean flow of water in the top 400 m of the northeastern North Atlantic. The ...
    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
  • Impact of springtime Himalayan-Tibetan Plateau snowpack on the onset of the Indian summer monsoon in coupled seasonal forecasts 

    Senan, Retish; Orsolini, Yvan; Weisheimer, Antje; Vitart, Frédéric; Balsamo, Gianpaolo; Dutra, E.; Doblas-Reyes, Franscisco J.; Basang, Droma (Springer, 2016-02-20)
    The springtime snowpack over the Himalayan–Tibetan Plateau (HTP) region and Eurasia has long been suggested to be an influential factor on the onset of the Indian summer monsoon. To assess the impact of realistic initialization ...
    Journal article
  • A diagram of wind speed versus air-sea temperature difference to understand the marine atmospheric boundary layer 

    Kettle, Anthony (Elsevier, 2015-08-28)
    This contribution reviews the dynamics in the marine atmospheric boundary layer (MABL) with a diagnostic diagram: wind speed versus air-sea temperature difference or U-ΔT. The diagram was first used by Alfred Woodcock in ...
    Journal article
  • 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 (AGU Publications, 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) ...
    Journal article
  • Calving rates at tidewater glaciers vary strongly with ocean temperature 

    Luckman, Adrian; Benn, Doug; Cottier, Finlo; Bevan, Suzanne; Nilsen, Frank; Inall, Mark (Nature Publishing Group, 2015-10-09)
    Rates of ice mass loss at the calving margins of tidewater glaciers (frontal ablation rates) are a key uncertainty in sea level rise projections. Measurements are difficult because mass lost is replaced by ice flow at ...
    Journal article
  • Simulations of the Bergen orographic wind shelter 

    Jonassen, Marius Opsanger; Ólafsson, Haraldur; Valved, Aslaug Skålevik; Reuder, Joachim; Olseth, Jan Asle (Co-action publishing, 2013-10-10)
    Even though the coast of western Norway is very windy, the centre of Bergen is rather calm. To gain further understanding of this wind shelter, we study the flow in the complex topography of Bergen during two south-westerly ...
    Journal article
  • Assessment of wind conditions at a fjord inlet by complementary use of sonic anemometers and lidars 

    Jakobsen, Jasna Bogunovic; Cheynet, Etienne; Snæbjörnsson, Jonas Thor; Mikkelsen, Torben; Sjøholm, Mikael; Angelou, Nicolas; Hansen, Per; Mann, Jakob; Svardal, Benny; Kumer, Valerie-Marie; Reuder, Joachim (Elsevier Ltd., 2015-12-02)
    Wind velocity measurement devices based on the remote optical sensing, lidars, are extensively applied in wind energy research and wind farm operation. The present paper demonstrates the relevance and potential of lidar ...
    Journal article
  • Solar forcing synchronizes decadal North Atlantic climate variability 

    Thiéblemont, Rémi; Matthes, Katja; Omrani, Nour-Eddine; Kodera, Kunihiko; Hansen, Felicitas (Nature Publishing Group, 2015-09-15)
    Quasi-decadal variability in solar irradiance has been suggested to exert a substantial effect on Earth’s regional climate. In the North Atlantic sector, the 11-year solar signal has been proposed to project onto a pattern ...
    Journal article
  • A toolbox for secondary quality control on ocean chemistry and hydrographic data 

    Lauvset, Siv Kari; Tanhua, Toste (Wiley, 2015-11)
    High quality, reference measurements of chemical and physical properties of seawater are of great importance for a wide research community, including the need to validate models and attempts to quantify spatial and temporal ...
    Journal article
  • Thermodynamic controls of the Atlantic Niño 

    Nnamchi, Hyacinth C; Li, Jianping; Kucharski, Fred; Kang, In-Sik; Keenlyside, Noel; Chang, Ping; Farneti, Riccardo (Nature Publishing Group (NPG), 2015-11-26)
    Prevailing theories on the equatorial Atlantic Niño are based on the dynamical interaction between atmosphere and ocean. However, dynamical coupled ocean-atmosphere models poorly simulate and predict equatorial Atlantic ...
    Journal article

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