Browsing NTNU Open by Author "Karlsen, Stein Rune"

Now showing items 1-7 of 7

    • A new NDVI measure that overcomes data sparsity in cloud-covered regions predicts annual variation in ground-based estimates of high arctic plant productivity 

      Karlsen, Stein Rune; Anderson, Helen B.; van der Wal, René; Hansen, Brage Bremset (Journal article; Peer reviewed, 2018)
      Efforts to estimate plant productivity using satellite data can be frustrated by the presence of cloud cover. We developed a new method to overcome this problem, focussing on the high-arctic archipelago of Svalbard where ...

    • 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 ofvegetation cover, biomass and productivity are becoming increasingly important for monitoring the effects ofa changing climate on the biosphere. With their large spatial coverage and good temporal ...

    • Dividalen - uberørt natur eller eldgammelt kulturlandskap? 

      Sjøgren, Per Johan E; Storm, Dikka; Kirchhefer, Andreas; Sommerseth, Ingrid; Karlsen, Stein Rune; Elvebakk, Arve (Chapter, 2015)

    • GLORIA Norge – årsrapport for 2013. Makroflater på Arnøya og satellittbasert overvåkning av vekstsesongen i Midt-Norge 

      Lundemo, Sverre; Karlsen, Stein Rune; Holten, Jarle Inge (NIBIO Rapport;2(86) 2016, Research report, 2016)
      Denne rapporten omhandler den første sesongen av en kyst - innlandgradient som skal etableres i Nord-Norge. På dette første fjellet, Trolltinden på Arnøya, er fastruter for overvåkning av plantesamfunn lagt ut langs en ...

    • High seasonal overlap in habitat suitability in a nonmigratory High Arctic ungulate 

      Pedersen, Åshild Ønvik; Soininen, Eeva M; Hansen, Brage Bremset; Le Moullec, Mathilde; Loe, Leif Egil; Paulsen, I.M.G.; Eischeid, Isabell; Karlsen, Stein Rune; Ropstad, Erik; Stien, Audun; Tarroux, Arnaud; Tømmervik, Hans; Ravolainen, Virve (Peer reviewed; Journal article, 2023)
      Understanding drivers of space use and habitat selection is essential for management and conservation, especially under rapid environmental change. Here, we develop summer and winter habitat suitability models for the ...

    • SIOS’s Earth Observation (EO), Remote Sensing (RS), and operational activities in response to COVID-19 

      Jawak, Shridhar D.; Andersen, Bo N.; Pohjola, Veijo; Godøy, Øystein; Hübner, Christiane E.; Jennings, Inger; Ignatiuk, Dariusz; Holmen, Kim; Sivertsen, Agnar; Hann, Richard; Tømmervik, Hans; Kääb, Andreas; Błaszczyk, Małgorzata; Salzano, Roberto; Luks, Bartłomiej; Høgda, Kjell Arild; Storvold, Rune; Nilsen, Lennart; Salvatori, Rosamaria; Krishnan, Kottekkatu Padinchati; Chatterjee, Sourav; Lorentzen, Dag Arne; Erlandsson, Rasmus; Lauknes, Tom Rune; Malnes, Eirik; Karlsen, Stein Rune; Enomoto, Hiroyuki; Fjæraa, Ann Mari; Zhang, Jie; Marty, Sabine; Nygård, Knut Ove; Lihavainen, Heikki (Peer reviewed; Journal article, 2021)
      Svalbard Integrated Arctic Earth Observing System (SIOS) is an international partnership of research institutions studying the environment and climate in and around Svalbard. SIOS is developing an efficient observing system, ...

    • Vekstavslutning hos gras og anbefaling om frist om høsten for spredning av husdyrgjødsel på eng uten nedmolding 

      Bonesmo, Helge Sverre; Karlsen, Stein Rune; Bakken, Anne Kjersti; Høgda, Kjell Arild (Grønn kunnskap e;, Research report, 2005)
      Årsvekst og vekstavslutting hos timotei samt minimum og maksimum N-opptak om høsten er beregna for fem år ved Holt i Troms, Kvithamar ved Trondheimsfjorden, Storsteigen i Østerdalen, Tomb i Østfold, og Øksnevad på Jæren. ...