Blar i Geophysical Institute på tittel

Viser treff 866-885 av 1187

    • Reconstructing winter climate anomalies in the Euro-Atlantic sector using circulation patterns 

      Madonna, Erica; Battisti, David; Li, Camille; White, Rachel H. (Journal article; Peer reviewed, 2021)
      The efficacy of Euro-Atlantic circulation regimes for estimating wintertime climate anomalies (precipitation and surface temperature) over Europe is assessed. A comparison of seasonal climate reconstructions from two ...

    • Reconstruction of Glacier Mass Balance and Sensitivity Tests to Climate Change: A case study of Ålfotbreen and Nigardsbreen 

      Wangdui, Wangdui (Master thesis, 2011-11-30)
      A physically-based one dimensional CROCUS snow model was applied to simulate the surface mass balances of Ålfotbreen (1964-2009) and Nigardsbreen (1962-2009) in southern Norway. The required hourly meteorological input ...

    • The red-sky enigma over Svalbard in December 2002 

      Sigernes, Fred; Lloyd, N.; Lorentzen, Dag Arne; Neuber, R.; Hoppe, U.-P.; Degenstein, D.; Shumilov, N.; Moen, Jøran Idar; Gjessing, Yngvar; Havnes, Ove; Skartveit, Arvid; Raustein, Elmer; Ørbæk, J.B.; Deehr, CS (Peer reviewed; Journal article, 2005)
      On 6 December 2002, during winter darkness, an extraordinary event occurred in the sky, as viewed from Longyearbyen (78° N, 15° E), Svalbard, Norway. At 07:30 UT the southeast sky was surprisingly lit up in a deep red ...

    • A Regime View of ENSO Flavors Through Clustering in CMIP6 Models 

      Ayar, Pradeebane Vaittinada; Battisti, David Stephen; Li, Camille; King, Martin; Vrac, Mathieu; Tjiputra, Jerry (Journal article; Peer reviewed, 2023)
      El Niño-Southern Oscillation (ENSO) flavors in the tropical Pacific are studied from a regime perspective. Five recurring spatial patterns or regimes characterizing the diversity of ENSO are established using a clustering ...

    • Regional atmospheric response to the Benguela Niñas 

      Koseki, Shunya; Imbol Koungue, Rodrigue Anicet (Journal article; Peer reviewed, 2021)
      We investigate how the atmosphere is affected by the cold sea surface temperature (SST) anomalies of the Benguela Niñas using reanalysis data and a high-resolution atmospheric model. A composite analysis of reanalysis data ...

    • Regional climate models' performance in representing precipitation and temperature over selected Mediterranean areas 

      Deidda, Roberto; Marrocu, Marino; Caroletti, Giulio Nils; Pusceddu, Gabriella; Langousis, Andreas; Lucarini, Valerio; Puliga, Michele; Speranza, Antonio (Peer reviewed; Journal article, 2013-12-12)
      This paper discusses the relative performance of several climate models in providing reliable forcing for hydrological modeling in six representative catchments in the Mediterranean region. We consider 14 Regional Climate ...

    • 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 regions known for intense wave–current interaction using spectral wave models: A case study in the energetic flow fields of Northern Norway 

      Halsne, Trygve; Bohlinger, Patrik; Christensen, Kai Håkon; Carrasco, Ana; Breivik, Øyvind (Journal article; Peer reviewed, 2022)
      Oceanic current forcing in spectral wave models have recently been demonstrated to have a large impact on wave heights at scales between one and up to several hundred kilometers. Here we investigate the impact of such ...

    • 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 ...