• Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard 

      Vickers, Hannah; Høgda, Kjell Arild; Solbø, Stian; Karlsen, Stein Rune; Tømmervik, Hans; Aanes, Ronny; Hansen, Brage Bremset (Journal article; Peer reviewed, 2016)
      Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important formonitoring the effects of a changing climate on the biosphere. With their large spatial coverage and good temporal ...
    • Changes in growing season duration and productivity of northern vegetation inferred from long-term remote sensing data 

      Park, Taejin; Ganguly, Sangram; Tømmervik, Hans; Euskirchen, Eugénie S.; Høgda, Kjell Arild; Karlsen, Stein Rune; Brovkin, Victor; Nemani, Ramakrishna R.; Myneni, Ranga B. (Journal article; Peer reviewed, 2016)
      Monitoring and understanding climate-induced changes in the boreal and arctic vegetation is critical to aid in prognosticating their future.Weused a 33 year (1982–2014) long record of satellite observations to robustly ...
    • Langtidsvirkninger på naturmiljøet av Forsvarets virksomhet i Troms 

      Tømmervik, Hans; Erikstad, Lars; Jacobsen, Karl-Otto; Strann, Karl Birger; Bakkestuen, Vegar; Aarrestad, Per Arild; Yoccoz, Nigel Gilles; Hagen, Dagmar; Johnsen, Trond Vidar; Johansen, Bernt; Høgda, Kjell Arild; Ahmed, Said Hassan; Dahl, Rolv; Bargel, Terje Harald; Olsen, Lars (NINA Rapport;49, Research report, 2005)
      Tømmervik, H., Erikstad, L., Jacobsen, K.-O., Strann, K.-B., Bakkestuen, V., Aarrestad, P.A., Yoccoz, N., Hagen, D., Johnsen, T.V., Johansen, B., Høgda, K.A., Ahmed, S.H., Dahl, R., Bargel, T.H., Olsen, L. 2005. ...
    • Record-low primary productivity and highplant damage in the Nordic Arctic Region in2012 caused by multiple weather events andpest outbreaks 

      Bjerke, Jarle W.; Karlsen, Stein Rune; Høgda, Kjell Arild; Malnes, Eirik; Jepsen, Jane Uhd; Lovibond, Sarah; Vikhamar-Schuler, Dagrun; Tømmervik, Hans (Peer reviewed, 2014)
      The release of cold temperature constraints on photosynthesis has led to increased productivity (greening) in significant parts (32–39%) of the Arctic, but much of the Arctic shows stable (57–64%) or reduced productivity ...
    • Trends in the start of the growing season in Fennoscandia 1982–2011 

      Høgda, Kjell Arild; Tømmervik, Hans; Karlsen, Stein Rune (Journal article; Peer reviewed, 2013)
      Global temperature is increasing, and this is affecting the vegetation phenology in many parts of the world. In Fennoscandia, as well as Northern Europe, the advances of phenological events in spring have been recorded in ...