Blar i Publikasjoner fra CRIStin - NINA på forfatter "Karlsen, Stein Rune"
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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 ... -
Future forest distribution on Finnmarksvidda, North Norway
Karlsen, Stein Rune; Tømmervik, Hans; Johansen, Bernt; Riseth, Jan Åge (Journal article; Peer reviewed, 2017)Finnmarksvidda is Norway’s largest mountain plateau, located in the Arctic/alpineboreal transition area. The area is also a central winter grazing area for the reindeer herds of the indigenous Sámi people. This study ... -
The northernmost hyperspectral FLoX sensor dataset for monitoring of high-Arctic tundra vegetation phenology and Sun-Induced Fluorescence (SIF)
Tømmervik, Hans; Julitta, Tommaso; Nilsen, Lennart; Park, Taejin; Burkart, Andreas; Ostapowicz, Katarzyna Anna; Karlsen, Stein Rune; Parmentier, Frans-Jan W.; Pirk, Norbert; Bjerke, Jarle W. (Peer reviewed; Journal article, 2023)A hyperspectral field sensor (FloX) was installed in Adventdalen (Svalbard, Norway) in 2019 as part of the Svalbard Integrated Arctic Earth Observing System (SIOS) for monitoring vegetation phenology and Sun-Induced ... -
Overvåking av vinterbeiter i Indre Finnmark 2013. Resultater fra feltrutene
Tømmervik, Hans; Bjerke, Jarle W.; Laustsen, K*; Johansen, Bernt; Karlsen, Stein Rune (NINA Rapport;1066, Research report, 2014)Dát raporta lea joatkka 1998:s álggahuvvon ”Sis-Finnmárkku goziheapmi” mii čuovvoluvvui fealttas sihke 2005/2006 ja 2010. Dát raporta lea fealtaiskkademiid vuođul mat dahkkojuvvojedje 2013:s ja sisttisdollet eananregistreremiid ... -
Overvåking av vinterbeiter i Vest-Finnmark og Karasjok 1998-2005-2010 - Resultater fra feltrutene
Tømmervik, Hans; Johansen, Bernt; Karlsen, Stein Rune; Ihlen, Per G. (NINA rapport;745, Research report, 2011)Tømmervik, H., Johansen, B., Karlsen, S.R. & Ihlen, P.G. 2011. Overvåking av vinterbeiter i Vest-Finnmark og Karasjok 1998- 2005-2010 - Resultater fra feltrutene. NINA Rapport 745, 65 s Reindriftsforvaltningen i Alta ... -
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; Journal article, 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 ... -
Snow season variability in a boreal-Arctic transition area monitored by MODIS data
Malnes, Eirik; Karlsen, Stein Rune; Johansen, Bernt; Bjerke, Jarle W.; Tømmervik, Hans (Journal article; Peer reviewed, 2016)The duration and extent of snow cover is expected to change rapidly with climate change. Therefore, there is a need for improved monitoring of snow for the benefit of forecasting, impact assessments and the population ... -
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 ... -
Tundra greenness
Epstein, H.; Bhatt, U.; Raynolds, M.; Walker, D.; Forbes, B.; Phoenix, G.; Bjerke, Jarle W.; Tømmervik, Hans; Karlsen, Stein Rune; Myneni, R.; Park, T.; Goetz, S.; Jia, G. (Chapter, 2018) -
Understanding the drivers of extensive plant damage in boreal and Arctic ecosystems: Insights from field surveys in the aftermath of damage
Bjerke, Jarle W.; Treharne, Rachael; Vikhamar-Schuler, Dagrun; Karlsen, Stein Rune; Ravolainen, Virve; Bokhorst, Stef; Phoenix, Gareth K.; Bochenek, Zbigniew; Tømmervik, Hans (Peer reviewed; Journal article, 2017)The exact cause of population dieback in nature is often challenging to identify retrospectively. Plant research in northern regions has in recent decades been largely focussed on the opposite trend, namely increasing ... -
Using ordinary digital cameras in place of near-infrared sensors to derive vegetation indices for phenology studies of high arctic vegetation
Anderson, Helen; Nilsen, Lennart; Tømmervik, Hans; Karlsen, Stein Rune; Nagai, Shin; Cooper, Elisabeth J. (Journal article; Peer reviewed, 2016)To remotely monitor vegetation at temporal and spatial resolutions unobtainable with satellite-based systems, near remote sensing systems must be employed. To this extent we used Normalized Difference Vegetation Index ... -
Vegetasjonskart over Svalbard basert på satellittdata. Dokumentasjon av metoder og vegetasjonsbeskrivelser
Johansen, Bernt; Tømmervik, Hans; Karlsen, Stein Rune (NINA Rapport;456, Research report, 2009)Johansen, B., Tømmervik, H. & Karlsen, S.R. 2009. Vegetasjonskart over Svalbard basert på satellittdata. Dokumentasjon av metoder og vegetasjonsbeskrivelser. NINA Rapport 456. 54 s. I plantegeografisk sammenheng inndeles ...