• Assessing the spatial variability in peak season CO2 exchange characteristics across the Arctic tundra using a light response curve parameterization 

      Mbufong, Herbert N.; Lund, Magnus; Aurela, Mika; Christensen, Torben Röjle; Eugster, Werner; Friborg, Thomas; Hansen, Birger Ulf; Humphreys, Elyn R.; Jackowicz-Korczyński, Marcin; Kutzbach, Lars; Lafleur, Peter M.; Oechel, Walter C.; Parmentier, Frans-Jan W.; Rasse, Daniel; Rocha, A.V.; Sachs, Torsten; Van Der Molen, Michiel K.; Tamstorf, M.P. (Journal article; Peer reviewed, 2014-09-15)
      This paper aims to assess the spatial variability in the response of CO2 exchange to irradiance across the Arctic tundra during peak season using light response curve (LRC) parameters. This investigation allows us to better ...
    • Key indicators of Arctic climate change: 1971–2017 

      Box, Jason E.; Colgan, William T.; Christensen, Torben Røjle; Schmidt, Niels Martin; Lund, Magnus; Parmentier, Frans-Jan W.; Brown, Ross; Bhatt, Uma S.; Euskirchen, Eugénie S.; Romanovsky, Vladimir E.; Walsh, John E.; Overland, James E.; Wang, Muyin; Corell, Robert; Meier, Walter N.; Wouters, Bert; Mernild, Jacob Sebastian Haugaard; Mård, Johanna; Pawlak, Janet; Olsen, Morten Skovgård (Journal article; Peer reviewed, 2019-04-08)
      Key observational indicators of climate change in the Arctic, most spanning a 47 year period (1971–2017) demonstrate fundamental changes among nine key elements of the Arctic system. We find that, coherent with increasing ...
    • Low impact of dry conditions on the CO2 exchange of a Northern-Norwegian blanket bog 

      Lund, Magnus; Bjerke, Jarle W.; Drake, Bert G.; Engelsen, Ola; Hansen, Georg Heinrich; Parmentier, Frans-Jan W.; Powell, Thomas; Silvennoinen, Hanna Marika; Sottocornola, Matteo; Tømmervik, Hans; Weldon, Simon Mark; Rasse, Daniel (Journal article; Peer reviewed, 2015)
      Northern peatlands hold large amounts of organic carbon (C) in their soils and are as such important in a climate change context. Blanket bogs, i.e. nutrient-poor peatlands restricted to maritime climates, may be extra ...
    • ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales 

      Qiu, Chunjing; Zhu, Dan; Ciais, Philippe; Guenet, Bertrand; Krinner, Gerhard; Peng, Shushi; Aurela, Mika; Bernhofer, Christian; Brümmer, Christian; Bret-Harte, Syndonia; Chu, Housen; Chen, Jiquan; Desai, Ankur R.; Dušek, Jiří; Euskirchen, Eugénie S.; Fortuniak, Krzysztof; Flanagan, Lawrence B.; Friborg, Thomas; Grygoruk, Mateusz; Gogo, Sébastien; Grünwald, Thomas; Hansen, Birger U.; Holl, David; Humphreys, Elyn; Hurkuck, Miriam; Kiely, Gerard; Klatt, Janina; Kutzbach, Lars; Largeron, Chloé; Laggoun-Défarge, Fatima; Lund, Magnus; Lafleur, Peter M.; Li, Xuefei; Mammarella, Ivan; Merbold, Lutz; Nilsson, Mats B.; Olejnik, Janusz; Ottosson-Löfvenius, Mikaell; Oechel, Walter C.; Parmentier, Frans-Jan W.; Peichl, Matthias; Pirk, Norbert; Peltola, Olli; Pawlak, Włodzimierz; Rasse, Daniel; Rinne, Janne; Shaver, Gaius R.; Schmid, Hans Peter; Sottocornola, Matteo; Steinbrecher, Rainer; Sachs, Torsten; Urbaniak, Marek; Zona, Donatella; Ziemblinska, Klaudia (Journal article; Peer reviewed, 2018-02-05)
      Peatlands store substantial amounts of carbon and are vulnerable to climate change. We present a modified version of the Organising Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE) land surface model for simulating ...
    • Restaurering av myr. Potensialet for karbonlagring og reduksjon av klimagassutslipp 

      Weldon, Simon Mark; Parmentier, Frans-Jan W.; Grønlund, Arne; Silvennoinen, Hanna Marika (NIBIO Rapport;2(113) 2916, Research report, 2016-11-02)
      I denne rapporten har vi undersøkt i hvilken grad restaurering av myr kan bidra til ny karbonlagring og samtidig reduserte klimagassutslipp. Et litteraturstudium viser at drenert myr er en langt større kilde til CO2-utslipp ...
    • Toward a statistical description of methane emissions from arctic wetlands 

      Pirk, Norbert; Mastepanov, Mikhail; López-Blanco, Efrén; Christensen, Louise H.; Christiansen, Hanne H; Hansen, Birger Ulf; Lund, Magnus; Parmentier, Frans-Jan W.; Skov, Kirstine; Christensen, Torben R. (Journal article; Peer reviewed, 2017-01-23)
      Methane (CH4) emissions from arctic tundra typically follow relations with soil temperature and water table depth, but these process-based descriptions can be difficult to apply to areas where no measurements exist. We ...
    • Vulnerability and resilience of the carbon exchange of a subarctic peatland to an extreme winter event 

      Parmentier, Frans-Jan W.; Rasse, Daniel; Lund, Magnus; Bjerke, Jarle W.; Drake, Bert G.; Weldon, Simon Mark; Tømmervik, Hans; Hansen, Georg Heinrich (Journal article; Peer reviewed, 2018)
      Extreme winter events that damage vegetation are considered an important climatic cause of arctic browning—a reversal of the greening trend of the region—and possibly reduce the carbon uptake of northern ecosystems. ...