Thomas Friborg

Thomas Friborg

Professor

ORCID: 0000-0001-5633-6097

Publication year:
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1 - 50 out of 131Page size: 50
  1. 1995
  2. Published

    The use of carbon dioxide fluxes in climatology

    Friborg, Thomas, 1995, Museum Tusculanum.

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

  3. 1997
  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 1998
  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 1999
  17. 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

  18. 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

  19. 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

  20. 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

  21. 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

  22. 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

  23. 2000
  24. 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

  25. 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

  26. 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

  27. 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

  28. 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

  29. 2001
  30. 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

  31. 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

  32. 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

  33. 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

  34. 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

  35. 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

  36. 2002
  37. 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

  38. 2003
  39. 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

  40. 2004
  41. 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

  42. 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

  43. 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

  44. 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

  45. 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

  46. 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

  47. 2005
  48. 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

  49. 2006
  50. 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

  51. 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

  52. 2007
  53. 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

  54. 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

  55. 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

  56. 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

  57. 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

  58. 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

  59. 2008
  60. 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

  61. 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

  62. 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

  63. 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

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