Thomas Friborg
Professor
Geography 1
Øster Voldgade 10
1350 København K
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20 years of methane measurements has sharpened our understanding
Sigsgaard, Charlotte, Friborg, Thomas, Pirk, N., Lund, M., Hansen, Birger, Skov, K. & Mastepanov, M., 2017, Annual Report Card 2016: Greenland Ecosystem Monitoring. Christensen, T. R. & Topp-Jørgensen, E. (eds.). Aarhus: University of Aarhus, p. 12-13 2 p.Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
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A catchment scale process study of carbon and greenhouse gas exchange in a subarctic landscape
Christensen, T. R., Johansson, P. T., Olsrud, M., Ström, L., Lindroth, A., Mastepanov, M., Malmer, N., Friborg, Thomas, Crill, P. M. & Callaghan, T. V., 2008.Research output: Contribution to conference › Poster › Research
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A catchment-scale carbon and greenhouse gas budget of a subarctic landscape
Christensen, T. R., Johansson, P. T., Olsrud, M., Ström, L., Lindroth, A., Mastepanov, M., Malmer, N., Friborg, Thomas, Crill, P. & Callaghan, T., 2007, In: Philosophical Transactions of the Royal Society, Series A. 365, 1856, p. 1643-1656Research output: Contribution to journal › Journal article › Research › peer-review
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A system to measure surface fluxes of momentum, sensible heat, water vapour and carbon dioxide
Moncrieff, J. B., Massheder, J. M., de Bruin, H., Elbers, J., Friborg, Thomas, Huesunkveld, B., Kabat, P., Scott, S., Søgaard, H. & Verhoef, A., 1997, In: Journal of Hydrology. 188-189, 1-4, p. 589-611Research output: Contribution to journal › Journal article › Research › peer-review
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Above-Ground Biomass Prediction for Croplands at a Sub-Meter Resolution Using UAV–LiDAR and Machine Learning Methods
Caballer Revenga, Jaime, Trepekli, Aikaterini, Oehmcke, Stefan, Jensen, Rasmus, Li, Lei, Igel, Christian, Gieseke, Fabian Cristian & Friborg, Thomas, 2022, In: Remote Sensing. 14, 16, 22 p., 3912.Research output: Contribution to journal › Journal article › Research › peer-review
Annual cycle of methane emission from a subarctic peatland
Jackowicz-Korczynski, M., Christensen, T. R., Bäckstrand, K., Crill, P., Friborg, Thomas, Mastepanov, M. & Ström, L., May 2010, In: Journal of Geophysical Research - Atmospheres. 115Research output: Contribution to journal › Journal article › Research › peer-review
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Annual cycles of methane emission from a subarctic peatland
Jackowicz-Korczyňski, M., Christensen, T. R., Bäckstrand, K., Crill, P. M., Friborg, Thomas, Mastepanov, M. & Ström, L., 2009, Land-atmosphere interaction of a subarctic palsa mire. 184 ed. p. 25-32 8 p. (Meddelanden fran Lunds Universitets Geografiska Institutioner, Avhandlingar; No. 184).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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Application of drone borne LiDAR technology for monitoring agricultural biomass and plant growth.
Trepekli, Aikaterini, Westergaard-Nielsen, Andreas & Friborg, Thomas, 2020. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
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Arctic vegetation damage by winter-generated coal mining pollution released upon thawing
Elberling, Bo, Søndergaard, J. E., Jensen, L. A., Schmidt, L. B., Hansen, Birger, Asmund, G., Balic Zunic, Tonci, Hollesen, J., Hanson, S., Jansson, P. & Friborg, Thomas, 2007, In: Environmental Science & Technology (Washington). 41, p. 2407-2413Research output: Contribution to journal › Journal article › Research › peer-review
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Assessing the potential capabilities of UAV-Lidar scanners, thermal and multispectral cameras to upscale energy heat fluxes in ICOS stations
Trepekli, Aikaterini, Westergaard-Nielsen, Andreas & Friborg, Thomas, 2019. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
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Assessing the spatial variability in peak season CO2 exchange characteristics across the Arctic tundra using a light response curve parameterization
Mbufong, H. N., Lund, M., Aurela, M., Christensen, T. R., Eugster, W., Friborg, Thomas, Hansen, Birger, Humphreys, E. R., Jackowicz-Korczynski, M., Kutzbach, L., Lafleur, P. M., Oechel, W. C., Parmentier, F. J. W., Rasse, D. P., Rocha, A. V., Sachs, T., van der Molen, M. K. & Tamstorf, M. P., 2014, In: Biogeosciences. 11, 17, p. 4897-4912 16 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Atmospheric fluxes of CO2 and CH4 above a high arctic ecosystem from spring to atumn
Nordstrøm, C., Friborg, Thomas, Hansen, Birger & Søgaard, H., 1997.Research output: Contribution to conference › Paper › Research › peer-review
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BVOC ecosystem flux measurements at a high latitude wetland site
Holst, T., Arneth, A., Hayward, S., Mastepanov, M., Jackowicz-Korczynski, M., Friborg, Thomas, Crill, P. & Bäckstrand, K., 2010, In: Atmospheric Chemistry and Physics. 10, p. 1617–1634 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
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BVOC ecosystem flux measurements at a high latitude wetland site
Holst, T., Ameth, A., Hayward, S., Ekberg, A., Mastepanov, M., Jackowicz-Korczyñski, M., Friborg, Thomas, Crill, P. M. & Bïckstrand, K., 2009, Land-atmosphere interaction of a subarctic palsa mire. 184 ed. p. 69-82 14 p. (Meddelanden fran Lunds Universitets Geografiska Institutioner, Avhandlingar; No. 184).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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Biogenic controls on trace gas fluxes in northern wetlands
Christensen, T. R., Lloyd, D., Svensson, B., Matikainen, P. J., Harding, R., Oskasson, H., Friborg, Thomas, Søgaard, H. & Panikov, N., 2002, (Global Change IGBP News Letter, Vol. 2002).Research output: Book/Report › Book › Research › peer-review
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Biotic, abiotic, and management controls on the net ecosystem CO2 exchange of European mountain grassland ecosystems
Wohlfahrt, G., Friborg, Thomas & Johansson et.al., P. T., 2008, In: Ecosystems. 11, 8, p. 1338-1351Research output: Contribution to journal › Journal article › Research › peer-review
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Bulk Transfer Coefficients Estimated From Eddy-Covariance Measurements Over Lakes and Reservoirs
Guseva, S., Armani, F., Desai, A. R., Dias, N. L., Friborg, Thomas, Iwata, H., Jansen, J., Lükő, G., Mammarella, I., Repina, I., Rutgersson, A., Sachs, T., Scholz, K., Spank, U., Stepanenko, V., Torma, P., Vesala, T. & Lorke, A., 27 Jan 2023, In: Journal of Geophysical Research: Atmospheres. 128, 2, 20 p., e2022JD037219.Research output: Contribution to journal › Journal article › Research › peer-review
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Carbon dioxide and methane dynamics in Russian tundra
Johansson, P. T., Kiepe, I., Herbst, M., Søgaard, H. & Friborg, Thomas, 2008.Research output: Contribution to conference › Poster › Research
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Carbon dioxide balance of subarctic tundra from plot to regional scales
Marushchak, M. E., Kiepe, I., Biasi, C., Elsakov, V., Friborg, Thomas, Johansson, P. T., Søgaard, H., Virtanen, T. & Martikainen, P. J., 2013, In: Biogeosciences. 10, 1, p. 437-452 16 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Carbon dioxide exchange of the Arctic tundra in the northern part of European Russia
Kiepe, I., Johansson, P. T., Friborg, Thomas & Søgaard, H., 2008.Research output: Contribution to conference › Poster › Research
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Carbon dioxide flux, transpiration and light response of millet in Sahel
Friborg, Thomas, Bøgh, E. & Søgaard, H., 1997, In: Journal of Hydrology. 188-189, 1-4, p. 633-650Research output: Contribution to journal › Journal article › Research › peer-review
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Carbon stocks and fluxes in the high latitudes: Using site-level data to evaluate Earth system models
Chadburn, S., Krinner, G., Porada, P., Bartsch, A., Beer, C., Marchesini, L. B., Boike, J., Elberling, B., Friborg, T., Hugelius, G., Johansson, M., Kuhry, P., Kutzbach, L., Langer, M., Lund, M., Parmentier, F-J., Peng, S., Huissteden, K. V., Wang, T., Westermann, S. & 2 others, , 2017, Copernicus/EGU, 41 p. (Biogeosciences Discussions; No. 197, Vol. 2017).Research output: Working paper › Preprint › Research
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Carbon stocks and fluxes in the high latitudes: using site-level data to evaluate Earth system models
Chadburn, S. E., Krinner, G., Porada, P., Bartsch, A., Beer, C., Marchesini, L. B., Boike, J., Ekici, A., Elberling, B., Friborg, T., Hugelius, G., Johansson, M., Kuhry, P., Kutzbach, L., Langer, M., Lund, M., Parmentier, F-J. W., Peng, S., Van Huissteden, K., Wang, T. & 3 others, , 2017, In: Biogeosciences. 14, 22, p. 5143-5169 27 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Catchment-Wide Atmospheric Greenhouse Gas Exchange as Influenced by Land Use Diversity
Herbst, M., Friborg, Thomas, Ringgaard, R. & Søgaard, H., 27 Jan 2011, In: Vadose Zone Journal. 10, 1, p. 67 - 77 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Causality guided machine learning model on wetland CH4 emissions across global wetlands
Yuan, K., Zhu, Q., Li, F., Riley, W. J., Torn, M., Chu, H., McNicol, G., Chen, M., Knox, S., Delwiche, K., Wu, H., Baldocchi, D., Ma, H., Desai, A. R., Chen, J., Sachs, T., Ueyama, M., Sonnentag, O., Helbig, M., Tuittila, E-S. & 18 others, , 2022, In: Agricultural and Forest Meteorology. 324, 10 p., 109115.Research output: Contribution to journal › Journal article › Research › peer-review
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Changes in Climate, permafrost and vegetation-effects on subarctic methane emission
Christensen, T. R., Johansson, T., Malmer, N., Åkerman, J., Friborg, Thomas, Crill, P. & Svensson, B., 2004, In: Geophysical Research Letters. 31, 4Research output: Contribution to journal › Journal article › Research › peer-review
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Climate and site management as driving factors for the atmospheric greenhouse gas exchange of a restored wetland
Herbst, M., Friborg, Thomas, Schelde, K., Jensen, Rasmus, Ringgaard, R., Vasquez, V., Thomsen, A. G. & Søgaard, H., 2013, In: Biogeosciences. 10, 1, p. 39-52 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Climate-Sensitive Controls on Large Spring Emissions of CH4 and CO2 From Northern Lakes
Jansen, J., Thornton, B. F., Jammet, M. M., Wik, M., Cortes, A., Friborg, Thomas, MacIntyre, S. & Crill, P. M., 2019, In: Journal of Geophysical Research: Biogeosciences. 124, 7, p. 2379-2399 21 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Comparing Evapotranspiration Rates Estimated from Atmospheric Flux and TDR Soil Moisture Measurements
Schelde, K., Ringgaard, R., Herbst, M., Thomsen, A. G., Friborg, Thomas & Søgaard, H., 1 Feb 2011, In: Vadose Zone Journal. 10, 1, p. 78-83 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Controls on the greenhouse gas exchange of a high-arctic ecosystem
Friborg, Thomas, Søgaard, H., Nordstrøm, C. & Hansen, Birger, 1999, In: Geografisk Tidsskrift. 99, p. 19-26Research output: Contribution to journal › Journal article › Research
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Crop water stress maps for an entire growing season from visible and thermal UAV imagery
Nielsen, H. H. M., Jensen, Rasmus, Thomsen, A. G., Nieto Solana, H., Rasmussen, Jesper & Friborg, Thomas, 2016, In: Biogeosciences. 13, 24, p. 6545-6563 19 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing
Johansson, T., Malmer, N., Crill, P. M., Friborg, Thomas, Akerman, J., Mastepanov, M., Christensen, T. R. & Johansson, P. T., 2006, In: Global Change Biology. 12, p. 2352-2369Research output: Contribution to journal › Journal article › Research › peer-review
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Deriving Aerodynamic Roughness Length at Ultra-High Resolution in Agricultural Areas Using UAV-Borne LiDAR
Trepekli, Aikaterini & Friborg, Thomas, 2021, In: Remote Sensing. 13, 17, 21 p., 3538.Research output: Contribution to journal › Journal article › Research › peer-review
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Direct and indirect controls of the interannual variability in atmospheric CO2 exchange of three contrasting ecosystems in Denmark
Jensen, Rasmus, Herbst, M. & Friborg, Thomas, 2017, In: Agricultural and Forest Meteorology. 233, p. 12-31 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
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DiskoBasis monitering
Sigsgaard, Charlotte, Jørgensen, C. J., Christiansen, C. T., Hansen, Per Juel, Christoffersen, Kirsten Seestern, McConnell, A., Mølgaard, K. A., Kroon, Aart, Friborg, Thomas, Hansen, Birger & Elberling, Bo, 2017, Arctic Station Annual Report 2015. Kroon, A. & Sigsgaard, C. (eds.). København: Københavns Universitet, p. 7-13 7 p. (Annual Report).Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research › peer-review
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Drivhusgasbalancen i den nordøstlige del af Rusland
Kiepe, I., Johansson, P. T., Friborg, Thomas, Rasmusen, E. & Søgaard, H., 2008, Geografi: årsskrift for selskabets aktiviteter og geografien ved danske universiteter. Det Kongelige Danske Geografiske Selskab, Vol. 2007. p. 47-50Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
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Dynamics of the carbon circulation in a High Arctic ecosystem - comprising atmospheric, terrrestrial, fluvial and marine components
Søgaard, H., Rysgaard, S., Sørensen, L., Larsen, S. & Friborg, Thomas, 2006, ?. 79 ed. Helsinki: University of Helsinki, p. 1Research output: Chapter in Book/Report/Conference proceeding › Preface/postscript › Research
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Eddy correlation of the methane exchange over a High-Arctic fen
Friborg, Thomas, Søgaard, H., Nordstrøm, C., Hansen, Birger & Christensen, T. R., 1999, In: Geophysical Research Abstracts. Vol 1, no. 2, p. 571-571Research output: Contribution to journal › Journal article › Research
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Energy Fluxes above Three Disparate Surfaces in a Temperate Mesoscale Coastal Catchment
Ringgaard, R., Herbst, M., Friborg, Thomas, Schelde, K., Thomsen, A. G. & Søgaard, H., 1 Feb 2011, In: Vadose Zone Journal. 10, 1, p. 54-66 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Environmental control of methane fluxes over a Danish peatland
Herbst, M., Friborg, Thomas, Ringgaard, R. & Søgaard, H., 2009.Research output: Contribution to conference › Poster › Research
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Episodical CO2 emission during shoulder seasons in the arctic
Friborg, Thomas, Elberling, Bo, Hansen, Birger, Lund, M. & Mastepanov, M., 12 Dec 2010.Research output: Contribution to conference › Poster › Research
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Estimating evaporation with thermal UAV data and two-source energy balance models
Hoffmann, H., Nieto Solana, H., Jensen, Rasmus, Guzinski, R., Zarco-Tejada, P. & Friborg, Thomas, 2016, In: Hydrology and Earth System Sciences. 20, 2, p. 697-713Research output: Contribution to journal › Journal article › Research › peer-review
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Explicitly modelling microtopography in permafrost landscapes in a land surface model (JULES vn5.4_microtopography)
Smith, N. D., Burke, E. J., Aas, K. S., Althuizen, I. H. J., Boike, J., Christiansen, C. T., Etzelmüller, B., Friborg, Thomas, Lee, H., Rumbold, H., Turton, R. H., Westermann, S. & Chadburn, S. E., 2022, In: Geoscientific Model Development. 15, 9, p. 3603-3639 37 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Explicitly modelling microtopography in permafrost landscapes in a land-surface model (JULES vn5.4_microtopography)
Smith, N. D., Chadburn, S. E., Burke, E. J., Aas, K. S., Althuizen, I. H. J., Boike, J., Christiansen, C. T., Etzelmüller, B., Friborg, Thomas, Lee, H., Rumbold, H., Turton, R. & Westermann, S., 2021, 43 p.Research output: Working paper › Preprint › Research
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Extreme Rain event -what are the consequences for Arctic Ecosytems
Sigsgaard, Charlotte, Lund, M., Abermann, J., Skov, K., Friborg, Thomas & Hansen, Birger, 2018, Annual Report Cards 2017. Christensen, T. R. & Topp-Jørgensen, E. (eds.). 1 ed. Aarhus: University of Aarhus, p. 26-27 2 p.Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication
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FLUXNET-CH4 Synthesis Activity: Objectives, Observations, and Future Directions
Knox, S. H., Jackson, R. B., Poulter, B., McNicol, G., Fluet-Chouinard, E., Zhang, Z., Hugelius, G., Bousquet, P., Canadell, J. G., Saunois, M., Papale, D., Chu, H., Keenan, T. F., Baldocchi, D., Torn, M. S., Mammarella, I., Trotta, C., Aurela, M., Bohrer, G., Campbell, D. I. & 46 others, , 2019, In: Bulletin of the American Meteorological Society. 100, 12, p. 2607-2632 26 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Field-scale CH4 emission at a sub-arctic mire with heterogeneous permafrost thaw status
Łakomiec, P., Holst, J., Friborg, Thomas, Crill, P., Rakos, N., Kljun, N., Olsson, P., Eklundh, L. & Rinne, J., 2021, Copernicus/EGU, 32 p. (Biogeosciences Discussions; No. 81, Vol. 2021).Research output: Working paper › Preprint › Research
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Field-scale CH4 emission at a subarctic mire with heterogeneous permafrost thaw status
Łakomiec, P., Holst, J., Friborg, Thomas, Crill, P., Rakos, N., Kljun, N., Olsson, P., Eklundh, L., Persson, A. & Rinne, J., 2021, In: Biogeosciences. 18, 20, p. 5811-5830 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Forøger vådområder den globale opvarmning?
Herbst, M., Friborg, Thomas, Ringgaard, R. & Søgaard, H., 2009, In: Vand og Jord. 16, 3, p. 84-89 6 p.Research output: Contribution to journal › Journal article › Research
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Fremtidens vandressourcer i Danmark [Klimaændringer]
Sonnenborg, T., Jensen, Karsten Høgh, Søgaard, H., Friborg, Thomas, Engesgaard, P. K. & Kidmose, J. B., 2009, In: Geoviden. 2, p. 2-15 14 p.Research output: Contribution to journal › Journal article › Communication
ID: 12694
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Carbon dioxide balance of subarctic tundra from plot to regional scales
Research output: Contribution to journal › Journal article › Research › peer-review
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Trends in CO2 exchange in a high Arctic tundra heath, 2000-2010
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Climate and site management as driving factors for the atmospheric greenhouse gas exchange of a restored wetland
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Published