Now showing items 114-133 of 293

  • The influence of surface gravity waves on the injection of turbulence in the upper ocean 

    Paskyabi, Mostafa Bakhoday; Fer, Ilker (Copernicus Publications on behalf of the European Geosciences Union&the American Geophysical Union, 2014-06-25)
    Observations were made in the near-surface layer, at about 8 m depth in 132 m deep water off the coast of Ålesund in Norway, for a duration of 2.5 months in late 2011. The measurement period covers the passage of two ...
    Journal article
  • The influence of the ocean and the stratosphere on climate persistence in the North Atlantic region 

    Breiteig, Tarjei (The University of Bergen, 2009-09-07)
    The North Atlantic Oscillation (NAO) is generally regarded to largely be a product of processes internal to the troposphere. This thesis investigates various aspects of how the NAO and related climatical fields are ...
    Doctoral thesis
  • Interannual sea-air CO2 flux variability from an observation-driven ocean mixed-layer scheme 

    Rödenbeck, Christian; Bakker, Dorothée C.E.; Metzl, Nicolas; Olsen, Are; Sabine, Christopher; Cassar, Nicolas; Reum, Friedemann; Keeling, Ralph F.; Heimann, Martin (Copernicus Publications, 2014-09-01)
    Interannual anomalies in the sea–air carbon dioxide (CO2) exchange have been estimated from surface-ocean CO2 partial pressure measurements. Available data are sufficient to constrain these anomalies in large parts of the ...
    Journal article
  • Interannual variability and ventilation timescales in the ocean cavity beneath Filchner-Ronne Ice Shelf, Antarctica 

    Nicholls, Keith W.; Østerhus, Svein (American Geophysical Union, 2004-04-20)
    Multiyear time series of ocean current and temperatures from beneath Filchner-Ronne Ice Shelf, Antarctica, demonstrate both seasonal and interannual variability. The seasonal signal is visible at all measurement sites, ...
    Journal article
  • Interannual variability in the wintertime air–sea flux of carbon dioxide in the northern North Atlantic, 1981–2001 

    Olsen, Are; Bellerby, Richard G. J.; Johannessen, Truls; Omar, Abdirahman M.; Skjelvan, Ingunn (Elsevier, 2003)
    Gridded fields of sea surface temperature (SST), sea level pressure (SLP), and wind speed were used in combination with data for the atmospheric mole fraction of CO2 and an empirical relationship between measured values ...
    Journal articlePeer reviewed
  • Interannual variations of freshwater content in Hornsund 

    Dølven, Knut Ola (The University of Bergen, 2015-05-04)
    Salinity measurements have been used to calculate the freshwater content in Hornsund for the years 2001 to 2014. In 2011 there was significantly higher freshwater content in the fjord, compared to the other years, with a ...
    Master thesis
  • An investigation of the Faroe Shelf Front 

    Larsen, Karin Margretha Húsgarð (The University of Bergen, 2003)
    The water mass on the Faroe Shelf is distinct from the off-shelf water surrounding the shelf. This difference of water masses is reflected in the temperature and salinity distributions. The on-shelf water is colder and ...
    Master thesis
  • The key role of topography in altering North Atlantic atmospheric circulation during the last glacial period 

    Pausata, Francesco S. R.; Li, Camille; Wettstein, Justin; Kageyama, M.; Nisancioglu, Kerim Hestnes (Copernicus PublicationsEuropean Geosciences Union, 2011-10-18)
    The Last Glacial Maximum (LGM; 21 000 yr before present) was a period of low atmospheric greenhouse gas concentrations, when vast ice sheets covered large parts of North America and Europe. Paleoclimate reconstructions and ...
    Journal article
  • Klimaeffektar av redusert arktisk sommarisdekke: ein modellstudie 

    Breivik, Kristin (The University of Bergen, 2006)
    Master thesis
  • Korrigering av modellestimert nedbør ved hjelp av historisk data. 

    Aabrekk, Mariann (The University of Bergen, 2010-06-01)
    I denne oppgåva er det sett på moglegheit for betring av modellestimert nedbør ved å korrigere modellerte nedbørsestimat ved hjelp av fleire ulike korreksjonsfaktorar som tar omsyn til ulike vêrtypar og nedbørsintensiteten. ...
    Master thesis
  • The linear stationary wave response to Arctic amplification related heating 

    Sellevold, Raymond (The University of Bergen, 2015-06-01)
    There has been a raft of manuscripts which claim to show that Arctic amplification (AA) is responsible for changes in the large-scale wintertime midlatitude atmospheric circulation. Responses to these studies have shown ...
    Master thesis
  • Linking Northern High-Latitude Cryospheric Changes to Large-Scale Atmospheric Circulation 

    Knudsen, Erlend Moster (The University of Bergen, 2015-03-20)
    Warming twice as fast as the rest of the globe, the northern high-latitudes arguably show the clearest evidences of observed and projected climate changes. Two of these are the rapid loss of Arctic sea ice and the shrinking ...
    Doctoral thesis
  • Local flow conditions in the Bergen valley based on observations and numerical simulations 

    Valved, Aslaug Skålevik (The University of Bergen, 2012-10-16)
    The complex topography and variability in surface roughness in the Bergen valley aff-ects the flow conditions in a multitude of ways. The steep mountains give shelter during strong synoptic flow, but the orography of Bergen ...
    Master thesis
  • Long-Term Retrospective Analysis of Mackerel Spawning in the North Sea: A New Time Series and Modeling Approach to CPR Data 

    Jansen, Teunis; Kristensen, Kasper; Payne, Mark; Edwards, Martin; Schrum, Corinna; Pitois, Sophie (Public Library of Science, 2012-06-21)
    We present a unique view of mackerel (Scomber scombrus) in the North Sea based on a new time series of larvae caught by the Continuous Plankton Recorder (CPR) survey from 1948-2005, covering the period both before and after ...
    Peer reviewedJournal article
  • Long-term surface pCO2 trends from observations and models 

    Tjiputra, Jerry; Olsen, Are; Bopp, Laurent; Lenton, Andrew; Pfeil, Benjamin; Roy, Tilla; Segschneider, Joachim; Totterdell, Ian; Heinze, Christoph (Co-Action PublishingThe International Meteorological Institute in Stockholm, 2014-05-19)
    We estimate regional long-term surface ocean pCO2 growth rates using all available underway and bottled biogeochemistry data collected over the past four decades. These observed regional trends are compared with those ...
    Journal article
  • Long-term variability of dust events in Iceland (1949-2011) 

    Dagsson-Waldhauserova, Pavla; Arnalds, Olafur; Ólafsson, Haraldur (Copernicus PublicationsEuropean Geosciences Union, 2014-12-16)
    The long-term frequency of atmospheric dust observations was investigated for the southern part of Iceland and interpreted together with earlier results obtained from northeastern (NE) Iceland (Dagsson-Waldhauserova et ...
    Journal article
  • Loss of sea ice during winter north of Svalbard 

    Onarheim, Ingrid Husøy; Smedsrud, Lars Henrik; Ingvaldsen, Randi; Nilsen, Frank (International Meteorological Institute, Stockholm University, 2014-06-05)
    Sea ice loss in the Arctic Ocean has up to now been strongest during summer. In contrast, the sea ice concentration north of Svalbard has experienced a larger decline during winter since 1979. The trend in winter ice area ...
    Journal article
  • Low Level Jet Streams at the Sea Ice Edge - Numerical Simulations using WRF 

    Keiderling, Stefan (The University of Bergen, 2013-06-03)
    The goal of the presented thesis is to investigate the formation of low level jets at the sea ice edge. Differential heating creates very sharp fronts at the ice edge. A transversal circulation, initiated by altered pressure ...
    Master thesis
  • Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean 

    Kvæstad, Elise (The University of Bergen, 2013-12-20)
    Self organizing maps (SOMs) have been used to estimate seawater fugacity of CO2 (fCO2) distribution in the Nordic Seas and the northern North Atlantic Ocean for 2005-2007. Four maps were produced for each region using ...
    Master thesis
  • Marine Wind and Wave Height Trends at Different ERA-Interim Forecast Ranges 

    Aarnes, Ole Johan; Abdalla, Saleh; Bidlot, Jean-Raymond; Breivik, Øyvind (American Meteorological Society, 2015-01-15)
    Trends in marine wind speed and significant wave height are investigated using the global reanalysis ERA-Interim over the period 1979–2012, based on monthly-mean and monthly-maximum data. Besides the traditional reanalysis, ...
    Journal article