Blar i NILU Brage på forfatter "Roberts, Tjarda"

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    • Nitrate dry deposition in Svalbard 

      Björkman, Mats Peter; Kühnel, Rafael; Partridge, Daniel G.; Roberts, Tjarda; Aas, Wenche; Mazzola, Mauro; Viola, Angelo; Hodson, Andy; Ström, Johan; Isaksson, Elisabeth (Journal article; Peer reviewed, 2013)
      Arctic regions are generally nutrient limited, receiving an extensive part of their bio-available nitrogen from the deposition of atmospheric reactive nitrogen. Reactive nitrogen oxides, as nitric acid (HNO3) and nitrate ...

    • A regional modelling study of halogen chemistry within a volcanic plume of Mt Etna's Christmas 2018 eruption 

      Narivelo, Herizo; Hamer, Paul David; Marécal, Virginie; Surl, Luke; Roberts, Tjarda; Pelletier, Sophie; Josse, Béatrice; Guth, Jonathan; Bacles, Mickaël; Warnach, Simon; Wagner, Thomas; Corradini, Stefano; Salerno, Giuseppe; Guerrieri, Lorenzo (Peer reviewed; Journal article, 2023)
      Volcanoes are known to be important emitters of atmospheric gases and aerosols, which for certain volcanoes can include halogen gases and in particular HBr. HBr emitted in this way can undergo rapid atmospheric oxidation ...