• Regional, seasonal, and predictable Arctic sea ice change 

      Onarheim, Ingrid Husøy (Doctoral thesis, 2017-12-07)
      The loss of Arctic sea ice is one of the most prominent and best quantified indicators of ongoing global climate change. Satellite passive microwave observations since 1979 indicate significant negative sea ice extent ...
    • Relating model bias and prediction skill in the equatorial Atlantic 

      Counillon, Francois; Keenlyside, Noel; Toniazzo, Thomas; Koseki, Shunya; Demissie, Teferi Dejene; Bethke, Ingo; Wang, Yiguo (Journal article; Peer reviewed, 2021)
      We investigate the impact of large climatological biases in the tropical Atlantic on reanalysis and seasonal prediction performance using the Norwegian Climate Prediction Model (NorCPM) in a standard and an anomaly coupled ...
    • Relation between the wind stress curl in the North Atlantic and the Atlantic inflow to the Nordic Seas 

      Sandø, Anne Britt; Furevik, Tore (Journal of Geophysical Research: Oceans, Journal article, 2008-06-27)
      In this study an isopycnic coordinate ocean model has been used to investigate the relationships between the North Atlantic wind stress curl (WSC) and the inflow of Atlantic water to the Nordic Seas. For the period 1995–2001, ...
    • The relationship between the eddy-driven jet stream and northern European sea level variability 

      Mangini, Fabio; Chafik, Léon; Madonna, Erica; Li, Camille; Bertino, Laurent; Nilsen, Jan Even Øie (Journal article; Peer reviewed, 2021)
      Wintertime sea level variability over the northern European continental shelf is largely wind-driven. Using daily gridded sea level anomaly from altimetry, we examine both the spatial and the temporal relationship between ...
    • Relative importance of tropopause structure and diabatic heating for baroclinic instability 

      Haualand, Kristine Flacké; Spengler, Thomas (Journal article; Peer reviewed, 2021)
      Misrepresentations of wind shear and stratification around the tropopause in numerical weather prediction models can lead to errors in potential vorticity gradients with repercussions for Rossby wave propagation and ...
    • Remarkable link between projected uncertainties of Arctic sea-ice decline and winter Eurasian climate 

      Cheung, Ho Nam; Keenlyside, Noel; Omrani, Nour-Eddine; Zhou, Wen (Journal article; Peer reviewed, 2018)
      We identify that the projected uncertainty of the pan-Arctic sea-ice concentration (SIC) is strongly coupled with the Eurasian circulation in the boreal winter (December–March; DJFM), based on a singular value decomposition ...
    • Resampling of ENSO teleconnections: accounting for cold-season evolution reduces uncertainty in the North Atlantic 

      King, Martin Peter; Li, Camille; Sobolowski, Stefan Pieter (Journal article; Peer reviewed, 2021)
      We re-examine the uncertainty of the El Niño–Southern Oscillation (ENSO) teleconnection to the North Atlantic following the investigation of Deser et al. (2017) (DES2017). Our analyses are performed on the November–December ...
    • Resolving the controls of water vapour isotopes in the Atlantic sector 

      Bonne, Jean-Louis; Behrens, Melanie K.; Meyer, Hanno; Kipfstuhl, Sepp; Rabe, Benjamin; Schonicke, Lutz; Steen-Larsen, Hans Christian; Werner, Martin (Peer reviewed; Journal article, 2019-04-09)
      Stable water isotopes are employed as hydrological tracers to quantify the diverse implications of atmospheric moisture for climate. They are widely used as proxies for studying past climate changes, e.g., in isotope records ...
    • Resolving the upper-ocean warm layer improves the simulation of the Madden-Julian oscillation 

      Tseng, Wan-Ling; Tsuang, Ben-Jei; Keenlyside, Noel; Hsu, Huang-Hsiung; Tu, Chia-Ying (Peer reviewed; Journal article, 2014-09)
      Here we show that coupling a high-resolution one-column ocean model to an atmospheric general circulation model dramatically improves simulation of the Madden–Julian oscillation (MJO) to have realistic strength, period, ...
    • Response of Arctic Ocean stratification to changing river runoff in a column model 

      Nummelin, Aleksi; Li, Camille; Smedsrud, Lars Henrik (Peer reviewed; Journal article, 2015-04-07)
      A one-dimensional model of the atmosphere-ice-ocean column is used to study the effects of changing river runoff to the Arctic Ocean. River runoff is the largest contributor of freshwater to the Arctic and is expected to ...
    • Retention of Coastal Cod Eggs in a Fjord Caused by Interactions between Egg Buoyancy and Circulation Pattern 

      Myksvoll, Mari Skuggedal; Sundby, Svein; Ådlandsvik, Bjørn; Vikebø, Frode B. (Peer reviewed; Journal article, 2011-08-01)
      Norwegian coastal cod form a stationary population of Atlantic cod Gadus morhua consisting of several genetically separated subpopulations. A small-scale differentiation in marine populations with pelagic eggs and larvae ...
    • Retrieval of snow properties from the Sentinel-3 Ocean and Land Colour Instrument 

      Kokhanovsky, Alexander; Lamare, Maxim; Danne, Olaf; Brockmann, Carsten; Dumont, Marie; Picard, Ghislain; Arnaud, Laurent; Favier, Vincent; Jourdain, Bruno; Le Meur, Emmanuel; Di Mauro, Biagio; Aoki, Teruo; Niwano, Masashi; Rozanov, Vladimir; Korkin, Sergey; Kipfstuhl, Sepp; Freitag, Johannes; Hoerhold, Maria; Zuhr, Alexandra; Vladimirova, Diana; Faber, Anne-Katrine; Steen-Larsen, Hans Christian; Wahl, Sonja; Andersen, Jonas K.; Vandecrux, Baptiste; van As, Dirk; Mankoff, Kenneth D.; Kern, Michael; Zege, Eleonora; Box, Jason E. (Journal article, 2019)
      The Sentinel Application Platform (SNAP) architecture facilitates Earth Observation data processing. In this work, we present results from a new Snow Processor for SNAP. We also describe physical principles behind the ...
    • A review of air-ice chemical and physical interactions (AICI): Liquids, quasi-liquids, and solids in snow 

      Bartels-Rausch, Thorsten; Jacobi, Hans-Werner; Kahan, Tara F.; Thomas, Jennie L.; Thomson, Erik S.; Abbatt, Jonathan P.D.; Ammann, Markus; Blackford, Jane R.; Bluhm, Hendrik; Boxe, Christopher S.; Dominé, Florent; Frey, Markus M.; Gladich, Ivan; Guzmán, Marcelo I.; Heger, Dominik; Huthwelker, Thomas; Klán, Petr; Kuhs, Werner F.; Kuo, Min H.; Maus, Sønke; Moussa, Samar G.; McNeill, V. Faye; Newberg, John T.; Pettersson, Jan B.C.; Roeselovà, Martina; Sodeau, John R. (Peer reviewed; Journal article, 2014-02-12)
      Snow in the environment acts as a host to rich chemistry and provides a matrix for physical exchange of contaminants within the ecosystem. The goal of this review is to summarise the current state of knowledge of physical ...
    • A revised ocean glider concept to realize Stommel's vision and supplement Argo floats 

      Bruvik, Erik Magnus; Fer, Ilker; Våge, Kjetil; Haugan, Peter M. (Journal article; Peer reviewed, 2020-02)
      This paper revisits Stommel's vision for a global glider network and the Argo design specification. A concept of floats with wings, so-called slow underwater gliders, is explored. An analysis of the energy or power consumption ...
    • The Role of Atlantic Heat Transport in Future Arctic Winter Sea Ice Loss 

      Årthun, Marius; Eldevik, Tor; Smedsrud, Lars H. (Peer reviewed; Journal article, 2019-05-14)
      During recent decades Arctic sea ice variability and retreat during winter have largely been a result of variable ocean heat transport (OHT). Here we use the Community Earth System Model (CESM) large ensemble simulation ...
    • Role of atmosphere-ocean interactions in supermodeling the tropical Pacific climate 

      Shen, Mao-Lin; Keenlyside, Noel; Bhatt, Bhuwan Chandra; Duane, Gregory (Peer reviewed; Journal article, 2017-12-29)
      The supermodel strategy interactively combines several models to outperform the individual models comprising it. A key advantage of the approach is that nonlinear improvements can be achieved, in contrast to the linear ...
    • The role of land and ocean evaporation on the variability of precipitation in the Yangtze River valley 

      Fremme, Astrid Kristine; Sodemann, Harald (Peer reviewed; Journal article, 2019-06-04)
      The Yangtze River valley (YRV) experiences large intraseasonal and interannual precipitation variability, which is mainly due to East Asian monsoon influence. The East Asian monsoon is caused by interaction of many processes ...
    • The role of sublimation as a driver of climate signals in the water isotope content of surface snow: Laboratory and field experimental results 

      Hughes, Abigail G.; Wahl, Sonja; Jones, Tyler R.; Zuhr, Alexandra; Hörhold, Maria; White, James W. C.; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2021)
      Ice core water isotope records from Greenland and Antarctica are a valuable proxy for paleoclimate reconstruction, yet the processes influencing the climate signal stored in the isotopic composition of the snow are being ...
    • The role of the sea surface temperature in the atmospheric seasonal cycle of the equatorial Atlantic 

      Rodriguez Crespo, Lander; Keenlyside, Noel; Koseki, Shunya (Journal article; Peer reviewed, 2018)
      We investigate the role of sea surface temperature (SST) and land surface temperature (LST) in driving the seasonal cycle of the atmosphere (surface winds and precipitation) in the tropical Atlantic. For this we compare ...
    • The role of the Southern Ocean in past global biogeochemical cycling 

      Morée, Anne (Doctoral thesis, 2020-04-27)
      This thesis describes several recent advances on the role of the Southern Ocean in past global biogeochemical cycling. We focus on the ocean of the Last Glacial Maximum (LGM) and the Pleistocene epoch and apply proxies of ...