Browsing Institutt for geofag by Author "Orsolini, Yvan"

Now showing items 1-6 of 6

  • Atmospheric Ozone and Methane in a Changing Climate 
    Isaksen, Ivar S A; Berntsen, Terje Koren; Dalsøren, Stig Bjørløw; Eleftheratos, K.; Orsolini, Yvan; Rognerud, Bjørg; Stordal, Frode; Søvde, Ole Amund; Zerefos, C; Holmes, Chris D. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    Ozone and methane are chemically active climate-forcing agents affected by climate–chemistry interactions in the atmosphere. Key chemical reactions and processes affecting ozone and methane are presented. It is shown that ...
  • 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 (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    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 ...
  • Impacts of UV irradiance and medium-energy electron precipitation on the North Atlantic oscillation during the 11-year solar cycle 
    Guttu, Sigmund; Orsolini, Yvan; Stordal, Frode; Otterå, Odd Helge; Omrani, Nour-Eddine; Tartaglione, Nazario; Verronen, Pekka T.; Rodger, Craig J.; Clilverd, Mark A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Observational studies suggest that part of the North Atlantic Oscillation (NAO) variability may be attributed to the spectral ultra-violet (UV) irradiance variations associated to the 11-year solar cycle. The observed ...
  • Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming 
    Smith-Johnsen, Christine; Orsolini, Yvan; Stordal, Frode; Limpasuvan, Varavut; Pérot, Kristell (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Sudden Stratospheric Warmings (SSW) affect the chemistry and dynamics of the middle atmosphere. Major warmings occur roughly every second winter in the Northern Hemisphere (NH), but has only been observed once in the ...
  • Nitric Oxide Response to the April 2010 Electron Precipitation Event: Using WACCM and WACCM‐D With and Without Medium‐Energy Electrons 
    Smith-Johnsen, Christine; Marsh, Daniel R.; Orsolini, Yvan; Tyssøy, Hilde Nesse; Hendrickx, Koen; Sandanger, Marit Irene J.; Ødegaard, Linn-Kristine Glesnes; Stordal, Frode (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Energetic electrons from the magnetosphere deposit their energy in the atmosphere and lead to production of nitric oxide (NO) in the mesosphere and lower thermosphere. We study the atmospheric NO response to a geomagnetic ...
  • Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions (RECONCILE): activities and results 
    von Hobe, Marc; Bekki, S.; Borrmann, S.; Cairo, F.; D'Amato, F.; Di Donfrancesco, G; Dörnbrack, A.; Ebersoldt, A.; Ebert, M.; Emde, C.; Engel, I.; Ern, Manfred; Frey, W.; Genco, S.; Griessbach, S.; Grooß, J.-U.; Gulde, T.; Günther, G.; Hösen, E.; Hoffmann, L.; Homonnai, V.; Hoyle, Christopher; Isaksen, Ivar S A; Jackson, D.R.; Jánosi, I. M.; Jones, R.L.; Kandler, K; Kalicinsky, C.; Keil, A.; Khaykin, S. M.; Khosrawi, F.; Kivi, R.; Kuttippurath, J.; Laube, J. C.; Lefevre, F; Lehmann, R.; Ludmann, S.; Luo, BP; Marchand, M.; Meyer, J.; Mitev, V; Molleker, S.; Müller, R.; Oelhaf, H.; Olschewski, F.; Orsolini, Yvan; Peter, T.; Pfeilsticker, K.; Piesch, C.; Pitts, Mike C.; Poole, Lamont R.; Pope, F. D.; Ravegnani, F.; Rex, M.; Riese, M.; Rockmann, T; Rognerud, Bjørg; Roiger, A.; Rolf, C.; Santee, M. L.; Scheibe, M; Schiller, C.; Schlager, H.; Siciliani de Cumis, M.; Sitnikov, N.; Søvde, Ole Amund; Spang, R.; Spelten, N.; Stordal, Frode; Sumińska-Ebersoldt, O.; Ulanovski, A.; Ungermann, J.; Viciani, S.; Volk, C.M.; vom Scheidt, M.; von der Gathen, P.; Walker, K.; Wegner, T.; Weigel, R.; Weinbuch, S.; Wetzel, G.; Wienhold, F. G.; Wohltmann, I.; Woiwode, W.; Young, I. A. K.; Yushkov, V.; Zobrist, B.; Stroh, F. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    The international research project RECONCILE has addressed central questions regarding polar ozone depletion, with the objective to quantify some of the most relevant yet still uncertain physical and chemical processes and ...