Thomas Friborg

Thomas Friborg

Professor

ORCID: 0000-0001-5633-6097

Publication year:
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1 - 131 out of 131Page size: 500
  1. 2023
  2. Published

    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

  3. Published

    Monitoring of carbon-water fluxes at Eurasian meteorological stations using random forest and remote sensing

    Xie, M., Ma, X., Wang, Y., Li, C., Shi, H., Yuan, X., Hellwich, O., Chen, C., Zhang, W., Zhang, C., Ling, Q., Gao, R., Zhang, Y., Ochege, F. U., Frankl, A., De Maeyer, P., Buchmann, N., Feigenwinter, I., Olesen, J. E., Juszczak, R. & 68 others, Jacotot, A., Korrensalo, A., Pitacco, A., Varlagin, A., Shekhar, A., Lohila, A., Carrara, A., Brut, A., Kruijt, B., Loubet, B., Heinesch, B., Chojnicki, B., Helfter, C., Vincke, C., Shao, C., Bernhofer, C., Brümmer, C., Wille, C., Tuittila, E. S., Nemitz, E., Meggio, F., Dong, G., Lanigan, G., Niedrist, G., Wohlfahrt, G., Zhou, G., Goded, I., Gruenwald, T., Olejnik, J., Jansen, J., Neirynck, J., Tuovinen, J. P., Zhang, J., Klumpp, K., Pilegaard, K., Šigut, L., Klemedtsson, L., Tezza, L., Hörtnagl, L., Urbaniak, M., Roland, M., Schmidt, M., Sutton, M. A., Hehn, M., Saunders, M., Mauder, M., Aurela, M., Korkiakoski, M., Du, M., Vendrame, N., Kowalska, N., Leahy, P. G., Alekseychik, P., Shi, P., Weslien, P., Chen, S., Fares, S., Friborg, Thomas, Tallec, T., Kato, T., Sachs, T., Maximov, T., di Cella, U. M., Moderow, U., Li, Y., He, Y., Kosugi, Y. & Luo, G., 2023, In: Scientific Data. 10, 18 p., 587.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. 2022
  5. Published

    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

  6. Published

    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, Jurasinski, G., Koebsch, F., Campbell, D., Schmid, H. P., Lohila, A., Goeckede, M., Nilsson, M. B., Friborg, Thomas, Jansen, J., Zona, D., Euskirchen, E., Ward, E. J., Bohrer, G., Jin, Z., Liu, L., Iwata, H., Goodrich, J. & Jackson, R., 2022, In: Agricultural and Forest Meteorology. 324, 10 p., 109115.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    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

  8. Published

    UAV-borne, LiDAR-based elevation modelling: a method for improving local-scale urban flood risk assessment

    Trepekli, Aikaterini, Balstrøm, Thomas, Friborg, Thomas, Fog, Bjarne, Allotey, A. N., Kofie, R. Y. & Møller-Jensen, Lasse, 2022, In: Natural Hazards. 113, p. 423–451 29 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Vegetation type is an important predictor of the arctic summer land surface energy budget

    Oehri, J., Schaepman-Strub, G., Kim, J. S., Grysko, R., Kropp, H., Grünberg, I., Zemlianskii, V., Sonnentag, O., Euskirchen, E. S., Reji Chacko, M., Muscari, G., Blanken, P. D., Dean, J. F., di Sarra, A., Harding, R. J., Sobota, I., Kutzbach, L., Plekhanova, E., Riihelä, A., Boike, J. & 54 others, Miller, N. B., Beringer, J., López-Blanco, E., Stoy, P. C., Sullivan, R. C., Kejna, M., Parmentier, F. J. W., Gamon, J. A., Mastepanov, M., Wille, C., Jackowicz-Korczynski, M., Karger, D. N., Quinton, W. L., Putkonen, J., van As, D., Christensen, T. R., Hakuba, M. Z., Stone, R. S., Metzger, S., Vandecrux, B., Frost, G. V., Wild, M., Hansen, Birger, Meloni, D., Domine, F., te Beest, M., Sachs, T., Kalhori, A., Rocha, A. V., Williamson, S. N., Morris, S., Atchley, A. L., Essery, R., Runkle, B. R. K., Holl, D., Riihimaki, L. D., Iwata, H., Schuur, E. A. G., Cox, C. J., Grachev, A. A., McFadden, J. P., Fausto, R. S., Göckede, M., Ueyama, M., Pirk, N., de Boer, G., Bret-Harte, M. S., Leppäranta, M., Steffen, K., Friborg, Thomas, Ohmura, A., Edgar, C. W., Olofsson, J. & Chambers, S. D., 2022, In: Nature Communications. 13, 12 p., 6379.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. 2021
  11. Published

    Gap-filling eddy covariance methane fluxes: Comparison of machine learning model predictions and uncertainties at FLUXNET-CH4 wetlands

    Irvin, J., Zhou, S., Mcnicol, G., Lu, F., Liu, V., Fluet-chouinard, E., Ouyang, Z., Knox, S. H., Lucas-moffat, A., Trotta, C., Papale, D., Vitale, D., Mammarella, I., Alekseychik, P., Aurela, M., Avati, A., Baldocchi, D., Bansal, S., Bohrer, G., Campbell, D. I. & 73 others, Chen, J., Chu, H., Dalmagro, H. J., Delwiche, K. B., Desai, A. R., Euskirchen, E., Feron, S., Goeckede, M., Heimann, M., Helbig, M., Helfter, C., Hemes, K. S., Hirano, T., Iwata, H., Jurasinski, G., Kalhori, A., Kondrich, A., Lai, D. Y., Lohila, A., Malhotra, A., Merbold, L., Mitra, B., Ng, A., Nilsson, M. B., Noormets, A., Peichl, M., Rey-sanchez, A. C., Richardson, A. D., Runkle, B. R., Schäfer, K. V., Sonnentag, O., Stuart-haëntjens, E., Sturtevant, C., Ueyama, M., Valach, A. C., Vargas, R., Vourlitis, G. L., Ward, E. J., Wong, G. X., Zona, D., Alberto, M. C. R., Billesbach, D. P., Celis, G., Dolman, H., Friborg, Thomas, Fuchs, K., Gogo, S., Gondwe, M. J., Goodrich, J. P., Gottschalk, P., Hörtnagl, L., Jacotot, A., Koebsch, F., Kasak, K., Maier, R., Morin, T. H., Nemitz, E., Oechel, W. C., Oikawa, P. Y., Ono, K., Sachs, T., Sakabe, A., Schuur, E. A., Shortt, R., Sullivan, R. C., Szutu, D. J., Tuittila, E., Varlagin, A., Verfaillie, J. G., Wille, C., Windham-myers, L., Poulter, B. & Jackson, R. B., 1 Oct 2021, In: Agricultural and Forest Meteorology. 308-309, 22 p., 108528.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    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

  13. Published

    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

  14. Published

    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

  15. Published

    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

  16. Published

    Plant Structure and Carbon Storage Assessment Utilizing Drone-Borne Lidar and Deep Learning Technologies in a Danish Agricultural Expanse.

    Trepekli, Aikaterini, Caballer Revenga, Jaime, Oehmcke, Stefan, Gieseke, Fabian Cristian, Jensen, Rasmus & Friborg, Thomas, 2021. 12 p.

    Research output: Contribution to conference › Paper › Research

  17. Published

    Prediction of above ground biomass and C-stocks based on UAV-LiDAR,multispectral imagery and machine learning methods.

    Caballer Revenga, Jaime, Trepekli, Aikaterini, Oehmcke, Stefan, Gieseke, Fabian Cristian, Jensen, Rasmus & Friborg, Thomas, 2021. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  18. Published

    Substantial hysteresis in emergent temperature sensitivity of global wetland CH4 emissions

    Chang, K., Riley, W. J., Knox, S. H., Jackson, R. B., Mcnicol, G., Poulter, B., Aurela, M., Baldocchi, D., Bansal, S., Bohrer, G., Campbell, D. I., Cescatti, A., Chu, H., Delwiche, K. B., Desai, A. R., Euskirchen, E., Friborg, T., Goeckede, M., Helbig, M., Hemes, K. S. & 33 others, Hirano, T., Iwata, H., Kang, M., Keenan, T., Krauss, K. W., Lohila, A., Mammarella, I., Mitra, B., Miyata, A., Nilsson, M. B., Noormets, A., Oechel, W. C., Papale, D., Peichl, M., Reba, M. L., Rinne, J., Runkle, B. R. K., Ryu, Y., Sachs, T., Schäfer, K. V. R., Schmid, H. P., Shurpali, N., Sonnentag, O., Tang, A. C. I., Torn, M. S., Trotta, C., Tuittila, E., Ueyama, M., Vargas, R., Vesala, T., Windham-myers, L., Zhang, Z. & Zona, D., 2021, In: Nature Communications. 12, 1, 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Supplementary material to "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, 15 p.

    Research output: Other contribution › Research

  20. Published

    UAV-LiDAR observations increase the precision of urban flood modelling in Accra by detecting critical micro-topographic features

    Trepekli, Aikaterini, Friborg, Thomas, Balstrøm, Thomas, Fog, Bjarne, Allotey, A., Kofie, R. Y. & Møller-Jensen, Lasse, 2021. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  21. 2020
  22. Published

    Modeled Microbial Dynamics Explain the Apparent Temperature Sensitivity of Wetland Methane Emissions

    Chadburn, S. E., Aalto, T., Aurela, M., Baldocchi, D., Biasi, C., Boike, J., Burke, E. J., Comyn-Platt, E., Dolman, A. J., Duran-Rojas, C., Fan, Y., Friborg, T., Gao, Y., Gedney, N., Göckede, M., Hayman, G. D., Holl, D., Hugelius, G., Kutzbach, L., Lee, H. & 5 others, Lohila, A., Parmentier, F. J. W., Sachs, T., Shurpali, N. J. & Westermann, S., Nov 2020, In: Global Biogeochemical Cycles. 34, 11, e2020GB006678.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    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

  24. Published

    Increasing contribution of peatlands to boreal evapotranspiration in a warming climate

    Helbig, M., Waddington, J. M., Alekseychik, P., Amiro, B. D., Aurela, M., Barr, A. G., Black, T. A., Blanken, P. D., Carey, S. K., Chen, J., Chi, J., Desai, A. R., Dunn, A., Euskirchen, E. S., Flanagan, L. B., Forbrich, I., Friborg, T., Grelle, A., Harder, S., Heliasz, M. & 39 others, Humphreys, E. R., Ikawa, H., Isabelle, P., Iwata, H., Jassal, R., Korkiakoski, M., Kurbatova, J., Kutzbach, L., Lindroth, A., Lofvenius, M. O., Lohila, A., Mammarella, I., Marsh, P., Maximov, T., Melton, J. R., Moore, P. A., Nadeau, D. F., Nicholls, E. M., Nilsson, M. B., Ohta, T., Peichl, M., Petrone, R. M., Petrov, R., Prokushkin, A., Quinton, W. L., Reed, D. E., Roulet, N. T., Runkle, B. R. K., Sonnentag, O., Strachan, I. B., Taillardat, P., Tuittila, E., Tuovinen, J., Turner, J., Ueyama, M., Varlagin, A., Wilmking, M., Wofsy, S. C. & Zyrianov, V., 2020, In: Nature climate change. 10, p. 555–560 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Inference of spatial heterogeneity in surface fluxes from eddy covariance data: A case study from a subarctic mire ecosystem

    Levy, P., Drewer, J., Jammet, M., Leeson, S., Friborg, Thomas, Skiba, U. & van Oijen, M., 2020, In: Agricultural and Forest Meteorology. 280

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    The biophysical climate mitigation potential of boreal peatlands during the growing season

    Helbig, M., Waddington, J. M., Alekseychik, P., Amiro, B., Aurela, M., Barr, A. G., Black, T. A., Carey, S. K., Chen, J., Chi, J., Desai, A. R., Dunn, A., Euskirchen, E. S., Flanagan, L. B., Friborg, T., Garneau, M., Grelle, A., Harder, S., Heliasz, M., Humphreys, E. R. & 37 others, Ikawa, H., Isabelle, P., Iwata, H., Jassal, R., Korkiakoski, M., Kurbatova, J., Kutzbach, L., Lapshina, E., Lindroth, A., Löfvenius, M. O., Lohila, A., Mammarella, I., Marsh, P., Moore, P. A., Maximov, T., Nadeau, D. F., Nicholls, E. M., Nilsson, M. B., Ohta, T., Peichl, M., Petrone, R. M., Prokushkin, A., Quinton, W. L., Roulet, N., Runkle, B. R. K., Sonnentag, O., Strachan, I. B., Taillardat, P., Tuittila, E., Tuovinen, J., Turner, J., Ueyama, M., Varlagin, A., Vesala, T., Wilmking, M., Zyrianov, V. & Schulze, C., 2020, In: Environmental Research Letters. 15, 10, 14 p., 104004.

    Research output: Contribution to journal › Letter › Research › peer-review

  27. Published

    Volatile Organic Compound fluxes in a subarctic peatland and lake

    Seco, Roger, Holst, T., Westergaard-Nielsen, Andreas, Li, Tao, Simin, Tihomir, Jansen, J., Crill, P., Friborg, Thomas, Holst, J., Rinne, J. & Rinnan, Riikka, 2020. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  28. Published

    Volatile organic compound fluxes in a subarctic peatland and lake

    Seco, Roger, Holst, T., Matzen, M. S., Westergaard-Nielsen, Andreas, Li, Tao, Simin, Tihomir, Jansen, J., Crill, P., Friborg, Thomas, Rinne, J. & Rinnan, Riikka, 2020, In: Atmospheric Chemistry and Physics. 20, 21, p. 13399-13416

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. 2019
  30. Published

    UAV-Lidar Data Combined with Multispectral and Thermal Infrared Imagery May Increase the Accuracy of Water Vapor Flux Estimates in Heterogeneous Vegetated Areas.

    Trepekli, Aikaterini, Westergaard-Nielsen, Andreas & Friborg, Thomas, 13 Dec 2019. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  31. Published

    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

  32. Published

    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

  33. Published

    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, Cescatti, A., Chamberlain, S., Chen, J., Chen, W., Dengel, S., Desai, A. R., Euskirchen, E., Friborg, Thomas, Gasbarra, D., Goded, I., Goeckede, M., Heimann, M., Helbig, M., Hirano, T., Hollinger, D. Y., Iwata, H., Kang, M., Klatt, J., Krauss, K. W., Kutzbach, L., Lohila, A., Mitra, B., Morin, T. H., Nilsson, M. B., Niu, S., Noormets, A., Oechel, W. C., Peichl, M., Peltola, O., Reba, M. L., Richardson, A. D., Runkle, B. R. K., Ryu, Y., Sachs, T., Schaefer, K. V. R., Schmid, H. P., Shurpali, N., Sonnentag, O., Tang, A. C. ,. I., Ueyama, M., Vargas, R., Vesala, T., Ward, E. J., Windham-Myers, L., Wohlfahrt, G. & Zona, D., 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

  34. Published

    Influence Of Climate Change On The Future Precipitation Pattern In The Region Of Ghana: Climate change resilience in urban mobility

    Trepekli, Aikaterini, Friborg, Thomas, Allotey, A. N. M. & Møller-Jensen, Lasse, 2019, 16 p.

    Research output: Book/Report › Report › Research

  35. Published

    Large loss of CO2 in winter observed across the northern permafrost region: [incl. correction]

    Natali, S. M., Watts, J. D., Rogers, B. M., Potter, S., Ludwig, S. M., Selbmann, A-K., Sullivan, P. F., Abbott, B. W., Arndt, K. A., Birch, L., Björkman, M. P., Bloom, A. A., Celis, G., Christensen, T. R., Christiansen, C. T., Commane, R., Cooper, E. J., Crill, P., Czimczik, C., Davydov, S. P. & 55 others, Du, J., Egan, J. E., Elberling, Bo, Euskirchen, E. S., Friborg, Thomas, Genet, H., Göckede, M., Goodrich, J. P., Grogan, P., Helbig, M., Jafarov, E. E., Jastrow, J. D., Kalhori, A. A. M., Kim, Y., Kimball, J. S., Kutzbach, L., Lara, J. M., Larsen, Klaus Steenberg, Lee, B., Liu, Z., Loranty, M. M., Lund, M., Lupascu, M., Madani, N., Malhotra, A., Matamala, R., McFarland, J., McGuire, A. D., Michelsen, Anders, Minions, C., Oechel, W. C., Olefeldt, D., Parmentier, F. W., Pirk, N., Poulter, B., Quinton, W., Rezanezhad, F., Risk, D., Sachs, T., Schaefer, K., M. Schmidt, N., Schuur, E. A. G., Semenchuk, P. R., Shaver, G. R., Sonnentag, O., Starr, G., Treat, C. C., Waldrop, M. P., Wang, Y., Welker, J. M., Wille, C., Xue, X., Zhang, Z., Zhuang, Q. & Zona, D., 2019, In: Nature Climate Change. 9, p. 852-857 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Mind the (data) gap

    Friborg, Thomas, Sigsgaard, Charlotte, Hansen, Birger & Christóbal, J., 2019, Annual report Cards 2018. Christensen, T. R., Arndal, M. F. & Topp-Jørgensen, E. (eds.). 1 ed. Aarhus: University of Aarhus, p. 22-23 2 p.

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication

  37. Published

    Model-data fusion to assess year-round CO2 fluxes for an arctic heath ecosystem in West Greenland (69°N)

    Zhang, W., Jansson, P. E., Sigsgaard, Charlotte, McConnell, A., Jammet, M. M., Westergaard-Nielsen, Andreas, Lund, M., Friborg, Thomas, Michelsen, Anders & Elberling, Bo, 2019, In: Agricultural and Forest Meteorology. 272-273, p. 176-186 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Monthly gridded data product of northern wetland methane emissions based on upscaling eddy covariance observations

    Peltola, O., Vesala, T., Gao, Y., Raty, O., Alekseychik, P., Aurela, M., Chojnicki, B., Desai, A. R., Dolman, A. J., Euskirchen, E. S., Friborg, T., Goeckede, M., Helbig, M., Humphreys, E., Jackson, R. B., Jocher, G., Joos, F., Klatt, J., Knox, S. H., Kowalska, N. & 18 others, Kutzbach, L., Lienert, S., Lohila, A., Mammarella, I., Nadeau, D. F., Nilsson, M. B., Oechel, W. C., Peichl, M., Pypker, T., Quinton, W., Rinne, J., Sachs, T., Samson, M., Schmid, H. P., Sonnentag, O., Wille, C., Zona, D. & Aalto, T., 2019, In: Earth System Science Data. 11, 3, p. 1263-1289 27 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Utilization of UAV-Lidar to infer surface roughness and leaf area index of a heterogeneous wooded area

    Trepekli, Aikaterini, Westergaard-Nielsen, Andreas & Friborg, Thomas, 2019, In: Geophysical Research Abstracts. 21, 1 p.

    Research output: Contribution to journal › Conference article › Research

  40. 2018
  41. Published

    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

  42. Published

    ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO2, water, and energy fluxes on daily to annual scales

    Qiu, C., Zhu, D., Ciais, P., Guenet, B., Krinner, G., Peng, S., Aurela, M., Bernhofer, C., Bruemmer, C., Bret-Harte, S., Chu, H., Chen, J., Desai, A. R., Dušek, J., Euskirchen, E. S., Fortuniak, K., Flanagan, L. B., Friborg, T., Grygoruk, M., Gogo, S. & 34 others, Grünwald, T., Hansen, Birger, Holl, D., Humphreys, E., Hurkuck, M., Kiely, G., Klatt, J., Kutzbach, L., Largeron, C., Laggoun-Defarge, F., Lund, M., Lafleur, P. M., Li, X., Mammarella, I., Merbold, L., Nilsson, M. B., Olejnik, J., Ottosson-Löfvenius, M., Oechel, W., Parmentier, F. W., Peichl, M., Pirk, N., Peltola, O., Pawlak, W., Rasse, D., Rinne, J., Shaver, G., Schmid, H. P., Sottocornola, M., Steinbrecher, R., Sachs, T., Urbaniak, M., Zona, D. & Ziemblinska, K., 2018, In: Geoscientific Model Development. 11, 2, p. 497-519 23 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. 2017
  44. Published

    Supplementary material to "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, Zhu, D. & Burke, E., 31 May 2017, 4 p. Copernicus/EGU.

    Research output: Other contribution › Research

  45. Published

    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

  46. Published

    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, Zhu, D. & Burke, E., 2017, Copernicus/EGU, 41 p. (Biogeosciences Discussions; No. 197, Vol. 2017).

    Research output: Working paper › Preprint › Research

  47. Published

    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, Westermann, S., Zhu, D. & Burke, E. J., 2017, In: Biogeosciences. 14, 22, p. 5143-5169 27 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    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

  49. Published

    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

  50. Published

    Snow: As a key regulator of Arctic Ecosytem Processes

    Sigsgaard, Charlotte, Friborg, Thomas, Hansen, Birger, Lund, M., Abermann, J., Skov, K. & Hansen, L. V., 2017, Annual Report cards 2016: Greenland Ecosystem Monitoring. Christensen, T. R. & Topp-Jørgensen, E. (eds.). 1 ed. Aarhus: University of Aarhus, p. 8-9 2 p.

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication

  51. Published

    Year-round CH4 and CO2 flux dynamics in two contrasting freshwater ecosystems of the subarctic

    Jammet, M., Dengel, S., Kettner, E., Parmentier, F. W., Wik, M., Crill, P. & Friborg, Thomas, 2017, In: Biogeosciences. 14, 22, p. 5189-5216 28 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  52. 2016
  53. Published

    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

  54. Published

    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. 697-713

    Research output: Contribution to journal › Journal article › Research › peer-review

  55. Published

    Methane dynamics in the subarctic tundra: combining stable isotope analyses, plot- and ecosystem-scale flux measurements

    Marushchak, M. E., Friborg, Thomas, Biasi, C., Herbst, M., Johansson, T., Kiepe, I., Liimatainen, M., Lind, S. E., Martikainen, P. J., Virtanen, T., Søgaard, H. & Shurpali, N. J., 2016, In: Biogeosciences. 13, 2, p. 597-608

    Research output: Contribution to journal › Journal article › Research › peer-review

  56. 2015
  57. Published

    Large methane emissions from a subarctic lake during spring thaw: mechanisms and landscape significance

    Jammet, M. M., Crill, P., Dengel, S. & Friborg, Thomas, 2015, In: Journal of Geophysical Research: Biogeosciences. 120, 11, p. 2289-2305 17 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  58. Published

    The uncertain climate footprint of wetlands under human pressure

    Petrescu, A. M. R., Lohila, A., Tuovinen, J-P., Baldocchi, D. D., Desai, A. R., Roulet, N. T., Vesala, T., Dolman, A. J., Oechel, W. C., Marcolla, B., Friborg, T., Rinne, J., Matthes, J. H., Merbold, L., Meijide, A., Kiely, G., Sottocornola, M., Sachs, T., Zona, D., Varlagin, A. & 24 others, Lai, D. Y. F., Veenendaal, E., Parmentier, F. W., Skiba, U., Lund, M., Hensen, A., Van Huissteden, J., Flanagan, L. B., Shurpali, N. J., Grunwald, T., Humphreys, E. R., Jackowicz-Korczynski, M., Aurela, M. A., Laurila, T., Gruning, C., Corradi, C. A. R., Schrier-Uijl, A. P., Christensen, T. R., Tamstorf, M. P., Mastepanov, M., Martikainen, P. J., Verma, S. B., Bernhofer, C. & Cescatti, A., 2015, In: Proceedings of the National Academy of Sciences of the United States of America. 112, 15, p. 4594-4599 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  59. 2014
  60. Published

    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

  61. Published

    Partitioning forest evapotranspiration: interception evaporation and the impact of canopy structure, local and regional advection

    Ringgaard, R. S., Herbst, M. & Friborg, Thomas, 2014, In: Journal of Hydrology. 517, p. 677-690 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  62. 2013
  63. Published

    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

  64. Published

    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

  65. Published

    Modeling canopy CO2 exchange in the European Russian Arctic

    Kiepe, I., Friborg, Thomas, Herbst, M., Johansson, T. & Søgaard, H., 2013, In: Arctic, Antarctic, and Alpine Research. 45, 1, p. 50-63 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  66. Published

    Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data

    Tagesson, Håkan Torbern, Mastepanov, M., Mölder, M., Tamstorf, M. P., Eklundh, L., Smith, B., Sigsgaard, Charlotte, Lund, M., Ekberg, A., Falk, J. M., Friborg, Thomas, Christensen, T. R. & Ström, L., 2013, In: Tellus B: Chemical and Physical Meteorology. 65, 21 p., 19722.

    Research output: Contribution to journal › Journal article › Research › peer-review

  67. 2012
  68. Published

    Monitoring the multi-year carbon balance of a subarctic palsa mire with micrometeorological techniques

    Christensen, T., Jackowicz-Korczynski, M., Aurela, M., Crill, P., Heliasz, M., Mastepanov, M. & Friborg, Thomas, 2012, In: Ambio. 41, 3 Suppl., p. 207-217 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  69. Published

    Partitioning of forest evapotranspiration: the impact of edge effects and canopy structure

    Ringgaard, R., Herbst, M. & Friborg, Thomas, 2012, In: Agricultural and Forest Meteorology. 166-167, p. 86-97 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  70. Published

    Trends in CO2 exchange in a high Arctic tundra heath, 2000-2010

    Lund, M., Falk, J. M., Friborg, Thomas, Mbufong, H. N., Sigsgaard, Charlotte, Søgaard, H. & Tamstorf, M. P., 2012, In: Journal of Geophysical Research: Biogeosciences. 117, G2, 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  71. 2011
  72. Published

    Interpreting the variations in atmospheric methane fluxes observed above a restored wetland

    Herbst, M., Friborg, Thomas, Ringgaard, R. & Søgaard, H., Jul 2011, In: Agricultural and Forest Meteorology. 151 , 7, p. 841-851 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  73. Published

    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

  74. Published

    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

  75. Published

    Plant-mediated CH4 transport and C gas dynamics quantified in-situ in a Phalaris arundinacea-dominant wetland

    Jensen, L. A., Elberling, Bo, Friborg, Thomas, Jørgensen, C. J. & Hansen, Birger, 1 Feb 2011, In: Plant and Soil. 343, 1-2, p. 287-301 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  76. Published

    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

  77. Published

    Quantification of C uptake in subarctic birch forest after setback by an extreme insect outbreak

    Heliasz, M., Johansson, T., Lindroth, A., Mölder, M., Mastepanov, M., Friborg, Thomas, Callaghan, T. V. & Christensen, T. R., 12 Jan 2011, In: Geophysical Research Letters. 38, L01704, p. 1704 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  78. Published

    One decade of CO2 flux measurements in a high Arctic tundra heath: trends and implications for the future

    Lund, M., Falk, J. M., Friborg, Thomas, Sigsgaard, Charlotte, Søgaard, H. & Tamstorf, M., 2011.

    Research output: Contribution to conference › Poster › Research

  79. 2010
  80. Published

    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

  81. 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. 115

    Research output: Contribution to journal › Journal article › Research › peer-review

  82. Published

    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

  83. 2009
  84. Published

    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

  85. Published

    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

  86. Published

    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

  87. Published

    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

  88. Published

    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

  89. Published

    Quantifying the relative importance of lake emissions in the carbon budget of a subarctic catchment

    Karlsson, J., Christensen, T. R., Friborg, Thomas, Förster, J., Hammarlund, D., Jackowicz-Korczyński, M., Kokfeit, U., Roehm, C. & Rosen, P., 2009, Land-atmosphere interaction of a subarctic palsa mire. 184 ed. p. 85-93 9 p. (Meddelanden fran Lunds Universitets Geografiska Institutioner, Avhandlingar; No. 184).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  90. Published

    The multi-year carbon balance of a subarctic paisa mire as documented by micrometeorological techniques

    Jackowicz-Korczyński, M., Christensen, T. R., Friborg, Thomas, Crill, P. & Aurela, M., 2009, Land-atmosphere interaction of a subarctic palsa mire. 184 ed. p. 35-50 16 p. (Meddelanden fran Lunds Universitets Geografiska Institutioner, Avhandlingar; No. 184).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  91. 2008
  92. Published

    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

  93. Published

    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. 1338-1351

    Research output: Contribution to journal › Journal article › Research › peer-review

  94. Published

    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

  95. Published

    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

  96. Published

    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. 47-50

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  97. Published

    High Arctic soil CO2 and CH4 production controlled by temperature, water, freezing, and snow

    Elberling, Bo, Nordstrøm, C., Grøndahl, L., Søgaard, H., Friborg, Thomas, Christensen, T. R., Stroem, L., Marchand, F. & Nijs, I., 2008, In: Advances in Ecological Research. 40, p. 441-472

    Research output: Contribution to journal › Journal article › Research › peer-review

  98. Published

    Observations and status of peatland greenhouse gas emissions in Europe

    Drösler, M., Freibauer, A., Christensen, T. R. & Friborg, Thomas, 2008, The Continental-Scale Greenhouse Gas Balance of Europe. Springer, p. 243-261 (Ecological Studies, Vol. 203).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  99. Published

    Palsa mires- CO2 exchange from Stordalen mire

    Friborg, Thomas, Johansson, P. T., Jackowicz-Korcynski, M., Christensen, T. R. & Crill, P. M., 2008.

    Research output: Contribution to conference › Poster › Research

  100. Published

    Spatial and interannual variability of trace gas fluxes in a heterogeneous High-Arctic landscape

    Grøndahl, L., Friborg, Thomas, Christensen, T., Ekberg, A., Elberling, Bo, Illeris, L., Nordstrøm, C., Rennermalm, Å., Sigsgaard, Charlotte & Søgaard, H., 2008, High-Arctic Ecosystem Dynamics in a Changing Climate: Advances in Ecological Research. Meltofte, H., Christensen, T., Elberling, B., Forchammer, M. & Rasch, M. (eds.). New York: Elsevier, Vol. 40. p. 473-498 25 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  101. Published

     Winter time burst of CO2 from the High Arctic soils of Svalbard

    Friborg, Thomas, Hansen, Birger, Elberling, Bo, Jensen, L. A., Søndergaard, J. E. & Mastepanov, M., 2008.

    Research output: Contribution to conference › Poster › Research

  102. 2007
  103. Published

    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. 1643-1656

    Research output: Contribution to journal › Journal article › Research › peer-review

  104. Published

    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. 2407-2413

    Research output: Contribution to journal › Journal article › Research › peer-review

  105. Published

    Methane emissions from western Siberian wetlands: heterogeneity and sensitivity to climate change

    Bohn, T., Lettenmaier, D. P., Sathulur, K., Bowling, L. C., Podest, E., McDonald, K. C. & Friborg, Thomas, 2007, In: Environmental Research Letters. 2

    Research output: Contribution to journal › Journal article › Research › peer-review

  106. Published

    Temperature and snow-melt controls on interannual variability in carbon exchange in the high Arctic

    Groendahl, L., Friborg, Thomas & Søgaard, H., 2007, In: Journal of Theoretical and Applied Climatology. 88, 1-2, p. 111-125 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  107. Published

    The Climate Basis and GeoBasis programmes

    Sigsgaard, Charlotte, Thorsøe, K., Fugt, A. W., Mastepanov, M., Friborg, Thomas, Tamstorf, M. P., Hansen, Birger, Ström, L. & Christensen, T. R., 2007, Zackenberg Ecological Research Operations, 12th AnnualReport, 2006. Klitgaard, A. B., Rasch, M. & Caning, K. (eds.). Copenhagen: Danish Polar Center, p. 12-34

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

  108. Published

    Zackenberg Basic: The Climate Basis and GeoBasis programmes

    Sigsgaard, Charlotte, Thorsøe, K., Fugl, A. W., Mastepanov, M., Friborg, Thomas, Tamstorf, M. P., Hansen, Birger, Ström, L. & Røjle Christensen, T., 2007, 12th Annual Report 2006, Zackenberg Ecological Research Operations, Danish Polar Center and Ministry of Science, Technology & Innovaton. p. 12-35

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

  109. 2006
  110. Published

    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. 2352-2369

    Research output: Contribution to journal › Journal article › Research › peer-review

  111. Published

    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. 1

    Research output: Chapter in Book/Report/Conference proceeding › Preface/postscript › Research

  112. 2005
  113. Published

    Zackenberg Basic: The Climate Basis and GeoBasis programmes

    Sigsgaard, Charlotte, Petersen, D., Grøndahl, L., Thorsøe, K., Meltofte, H., Hinkler, J., Friborg, Thomas, Hansen, Birger & Tamstorf, M. P., 2005, 10th Annual Report 2004, Zackenberg Ecological Research Operations, Danish Polar Center and Ministry of Science, Technology & Innovaton. p. 10-34

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

  114. 2004
  115. Published

    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, 4

    Research output: Contribution to journal › Journal article › Research › peer-review

  116. Published

    High Arctic carbon sink identification - a systems approach

    Søgaard, H., Sørensen, L., Rysgaard, S., Grøndahl, L., Elberling, Bo, Friborg, Thomas, Larsen, S. E. & Bendtsen, J., 2004, In: Global Change NewsLetter. no. 59, p. 11-14

    Research output: Contribution to journal › Journal article › Research

  117. Published

    Thawing sub-arctic permafrost: Effects on vegetation and methane emissions

    Christensen, T. R., Johansson, P. T., Malmer, N., Åkerman, J., Friborg, Thomas, Crill, P., Mastepanov, M. & Svensson, B., 2004, In: Geophysical Research Letters. 31, p. L04501

    Research output: Contribution to journal › Journal article › Research › peer-review

  118. Published

    Thawing sub-arctic permafrost - effects on vegetation and methane emissions

    Byrne, K., Chojnicki, B., Christensen, T. R., Drösler, M., Freibauer, A., Friborg, Thomas, Frolking, S., Lindroth, A., Mailhammer, J., Malmer, N., Selin, P., Turunen, J., Valentini, R. & Zetterberg, L., 2004, EU peatlands : Current carbon stocks and trace gas fluxes. no. 4 ed. European Commission, p. ?

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

  119. Published

    Thawing sub-artic permafrost - effects on vegetation and methane emissions

    Friborg, Thomas, Christensen, T. R., Johansson, T., Åkerman, H. J., Mastepanov, M., Malmer, N., Crill, P. & Svensson, B.H., 2004, In: Geophysical Research Letters. vol. 31, no. 4, p. 4

    Research output: Contribution to journal › Journal article › Research › peer-review

  120. Published

    Zackenberg Basic: The Climate Basis and GeoBasis programmes

    Sigsgaard, Charlotte, Petersen, D., Grøndahl, L., Meltofte, H., Hinkler, J., Hansen, Birger, Tamstorf, M. P. & Friborg, Thomas, 2004, 9th Annual Report 2003, Zackenberg Ecological Research Operations, Danish Polar Center and Ministry of Science, Technology & Innovaton. p. 10-32

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

  121. 2003
  122. Published

    Siberian wetlands - where a sink is a source

    Friborg, Thomas, Søgaard, H., Christensen, T. R., Lloyd, C. R. & Panikov, N. S., 2003, In: Geophysical Research Letters. vol. 30, no. 21, p. 4

    Research output: Contribution to journal › Journal article › Research › peer-review

  123. 2002
  124. Published

    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

  125. 2001
  126. Published

    Geografer sendt til Sibirien

    Friborg, Thomas, 2001, Diversitet, forskning og formidling ved Det Naturvidenskabelige Fakultet, Københavns Universitet. DK, p. 26-27

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  127. Published

    Measurements and modelling of surface fluxes of heat and water vapour form sites in the European Arctic

    Friborg, Thomas, Lloyd, C. R., Harding, R. J. & Aurela, M., 2001, In: Journal of Theoretical and Applied Climatology. 70, 1-4, p. 19-33

    Research output: Contribution to journal › Journal article › Research

  128. Published

    Seasonal carbon dioxide balance and respiration of a high-arctic fen ecosystem in NE Greenland

    Friborg, Thomas, Nordstrøm, C., Søgaard, H., Christensen, T. R. & Hansen, Birger, 2001, In: Journal of Theoretical and Applied Climatology. 70, 1-4, p. 149-166

    Research output: Contribution to journal › Journal article › Research › peer-review

  129. Published

    Surface energy- and water balance in a high-arctic environment in NE Greenland

    Søgaard, H., Hasholt, Bent, Friborg, Thomas & Nordstrøm, C., 2001, In: Journal of Theoretical and Applied Climatology. 70, p. 35-52

    Research output: Contribution to journal › Journal article › Research › peer-review

  130. Published

    Surface fluxes of heat and water vapour from sites in the European Arctic

    Lloyd, C. R., Harding, R. J., Friborg, Thomas & Aurela, M., 2001, In: Theoretical and Applied Climatology. 70, p. 19-33 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  131. Published

    The Arctic: Climate Change Research-Danish Contributions

    Meltofte, H., Rysgaard, S., Rasch, M., Jonasson, S. E., Christensen, T. R., Friborg, Thomas, Søgaard, H. & Pedersen, S. A., 2001, Climate Change Research - Danish Contributions. København: Gad, p. 303-330 27 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  132. 2000
  133. Published

    Methane exchange over a high arctic fen: A model approach based on eddy correlation data

    Friborg, Thomas, Christensen, T. R., Hansen, Birger, Nordstrøm, C. & Søgaard, H., 2000, In: Global Biogeochemical Cycles. 14, 3, p. 715 723

    Research output: Contribution to journal › Journal article › Research › peer-review

  134. Published

    Trace gas exchange in a high-Arctic valley: 2. Landscape CH4 fluxes measured and modeled using eddy correlation data

    Friborg, Thomas, Christensen, T. R., Hansen, B. U., Nordstroem, C. & Soegaard, H., 2000, In: Global Biogeochemical Cycles. 14, 3, p. 715-723

    Research output: Contribution to journal › Journal article › Research › peer-review

  135. Published

    Trace gas exchange in a high-arctic valley 2. Landscape CH4 fluxes measured and modelled using eddy correlation data

    Friborg, Thomas, Christensen, T. R., Hansen, Birger, Nordstrøm, C. & Søgaard, H., 2000, In: Global Biogeochemical Cycles. Vol. 14, no. 3, p. 715-723

    Research output: Contribution to journal › Journal article › Research › peer-review

  136. Published

    Trace gas exchange in a high-arctic valley 3: Integration and scaling of CO2 fluxes from canopy to landscape using flux data, footprint modelling and remote sensing

    Søgaard, H., Nordstrøm, C., Friborg, Thomas, Hansen, Birger, Christensen, T. R. & Bay, C., 2000, In: Global Biochemical Cycles. 14, 3, p. 725-744

    Research output: Contribution to journal › Journal article › Research › peer-review

  137. Published

    Trace gas exchange in a high-arctic valley, 1, Variations in CO2 and CH4 flux between tundra vegetation types

    Christensen, T. R., Friborg, Thomas, Sommerkorn, M., Kaplan, J., Illeris, L., Søgaard, H., Nordstrøm, C. & Jonasson, S. E., 2000, In: Global Biogeochemical Cycles. 14, 3, p. 701-713

    Research output: Contribution to journal › Journal article › Research › peer-review

  138. 1999
  139. Published

    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. 19-26

    Research output: Contribution to journal › Journal article › Research

  140. Published

    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. 571-571

    Research output: Contribution to journal › Journal article › Research

  141. Published

    Micrometeorological Measurements of Methane Emission from Siberian Wetlands

    Friborg, Thomas, Søgaard, H., Lloyd, C. R., Pauskov, N. & Christensen, T. R., 1999, Ikke angivet. AGU, p. 61-61

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  142. Published

    Models of CO2 and water vapour fluxes from a sparse millet crop in the Sahel

    Boegh, E., Soegaard, H., Friborg, Thomas & Levy, P. E., 1999, In: Agricultural and Forest Meteorology. 93, 1, p. 7-26

    Research output: Contribution to journal › Journal article › Research › peer-review

  143. Published

    Models of CO2 and water vapor fluxes from a sparse millet crop in the Sahel

    Bøgh, E., Søgaard, H., Friborg, Thomas & Levy, P., 1999, In: Agricultural and Forest Meteorology. 93, p. 7-26

    Research output: Contribution to journal › Journal article › Research › peer-review

  144. Published

    Seasonal exchange of CH4 and CO2 during the short high-arctic summer in northern Greenland

    Friborg, Thomas, Hansen, Birger, Nordstrøm, C. & Søgaard, H., 1999, (Proceedings from "Greenhouse gases and their role in Climate Change: the status of research in Europe", Orvieto Italy, EU commission, 1999).

    Research output: Book/Report › Anthology › Research › peer-review

  145. 1998
  146. Published

    Main work carried out at Zackenberg

    Hansen, Birger, Friborg, Thomas & Nordstrøm, C., 1998, LAPP 2nd Annual Report (1997-1998). p. 51-55

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

  147. Published

    Multitemporal vegetation classification in a high arctic area based on Landsat TM and DEM

    Tamstorf, M., Hansen, Birger, Bay, C., Friborg, Thomas, Nordstrøm, C. & Søgaard, H., 1998.

    Research output: Contribution to conference › Paper › Research › peer-review

  148. Published

    The relationship between Landsat TM derived NDVI and LAI in a high arctic area

    Hansen, Birger, Tamstorf, M., Friborg, Thomas, Nordstrøm, C. & Søgaard, H., 1998.

    Research output: Contribution to conference › Paper › Research › peer-review

  149. Published

    Trace gas exchange from plot to landscape scale

    Christensen, T. R., Sommerkorn, M., Kaplan, J., Illeris, L., Friborg, Thomas, Søgaard, H., Nordstrøm, C., Hansen, Birger & Jonasson, S., 1998, 3rd Annual Report for ZERO. p. 39-43

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

  150. Published

    Understanding land surface physical processes in the arctic

    Lloyd, C. R., Aurela, M., Bruland, Fowler, D., Friborg, Thomas, Hansen, Birger, Harding, R. J., Hargreaves, K., Nordstrøm, C., Laurila, T., Tuovinen, J., Sand, K. & Vehvilainen, B., 1998, Proceedings from "Greenhouse gases and their role in Climate Change: the status of research in Europe".

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  151. 1997
  152. Published

    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. 589-611

    Research output: Contribution to journal › Journal article › Research › peer-review

  153. Published

    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

  154. Published

    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. 633-650

    Research output: Contribution to journal › Journal article › Research › peer-review

  155. Published

    Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques

    Friborg, Thomas, Christensen, T. R. & Søgaard, H., 1997, In: Geophysical Research Letters. 24, 23, p. 3061-3064 97GL03024.

    Research output: Contribution to journal › Journal article › Research › peer-review

  156. Published

    Spatial and temporal variations in net carbon flux during HAPEX-Sahel

    Moncrieff, J. B., Monteney, B., Verhoef, A., Friborg, Thomas, Elbers, J., Kabat, P., de Bruin, H., Søgaard, H., Jarvis, P. G. & Billing, H., 1997, In: Journal of Hydrology. Vol. 188-189, No. 1-4, p. 563-588

    Research output: Contribution to journal › Journal article › Research › peer-review

  157. Published

    The variability of evaporation during the HAPEX-Sahel intensive observation period

    Gash, J., Kabat, P., Amadou, M., Bessemoulin, P., Billing, H., Blyth, E., De Bruin, H. A. R., Elbers, J., Friborg, Thomas, Harrison, G., Holwill, C. J., Lloyd, C. R., Lhomme, J., Moncrieff, J. B., Monteny, B. A., Puech, D., Søgaard, H., Tuzet, A. & Verhoef, A., 1997, In: Journal of Hydrology. Hapex-Sahel special issue, 188-189, 1-4, p. 385-399

    Research output: Contribution to journal › Journal article › Research

  158. 1995
  159. Published

    The use of carbon dioxide fluxes in climatology

    Friborg, Thomas, 1995, Museum Tusculanum.

    Research output: Book/Report › Ph.D. thesis › Research

ID: 12694