Univ. Doz. Dr. Georg Wohlfahrt

Biosphere-Atmosphere exchange, SVAT modelling

For legal reasons the biomet papers are password protected.
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Groenendijk M., Dolman H., Ammann C., Arneth A., Cescatti A., Dragoni D., Gash J., Gianelle D., Gioli B., Kiely G., Knohl A., Law B., Lund M., Marcolla B., van der Molen M., Montagnani L., Moors E., Richardson A., Roupsard O., Verbeeck H., Wohlfahrt G. (2011) Seasonal variation of photosynthetic model parameters and leaf area index from global Fluxnet eddy covariance data. Journal of Geophysical Research - Biogeosciences, in press.
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Lasslop G., Reichstein M., Papale D., Richardson A., Arneth A., Barr A., Stoy P., Wohlfahrt G. (2010) Separation of net ecosystem CO2 exchange into assimilation and respiration using a light response curve approach: critical issues and global evaluation. Global Change Biology 16, 187-208.
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Irschick C., Carli E., Eliskases C., Frischmann S., Fritsch U., Gobiet A., Haas H., Kapelari S., Norz J., Themeßl M., Zebisch M., Wohlfahrt G. (2011) GrassClim - Interaktive Effekte von Klimawandel und Bewirtschaftung auf den Ertrag und die Kohlendioxidsenken/quellenstärke von Grünland. 12. Österreichi-scher Klimatag, 21-22 September 2011, Vienna, Austria.
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Wohlfahrt G., Brilli F., Hörtnagl L., Xu X., Bingemer H., Hansel A., Loreto F. (2011) Carbonyl sulfide (COS) as a tracer for canopy photosynthesis, transpiration and stomatal conductance: potential and limitations. 3rd iLEAPS Science Conference, 18-23 September 2011, Garmisch-Partenkirchen, Germany.
Bamberger I., Hörtnagl L., Ruuskanen T., Schnitzhofer R., Müller M., Graus M., Karl T., Hansel A., Wohlfahrt G. (2011) Grassland: Not only a source for VOCs. 3rd iLEAPS Science Conference, 18-23 September 2011, Garmisch-Partenkirchen, Germany.
Hörtnagl L., Bamberger I., Graus M., Ruuskanen T., Schnitzhofer R., Hansel A. and Wohlfahrt G. (2011) Acetone and acetaldehyde exchage above a managed temperate mountain grassland. EGU2011-2244, European Geophysical Union 2011 General Assembly, 04-08 May 2011, Vienna, Austria.
Irschick C., Liener T., Hammerle A., Wohlfahrt G. (2011) Inverse Estimation of the Parameters of a Canopy Gross Photosynthesis Model. EGU2011-2244, European Geophysical Union 2011 General Assembly, 04-08 May 2011, Vienna, Austria.
Dobesberger P., Zeidler A., Wohlfahrt G. (2011) Calibration and Comparison of three SVAT (Surface-Vegetation-Atmosphere Transfer) models. EGU2011-10117, European Geophysical Union 2011 General Assembly, 03 - 08 April 2011, Vienna, Austria.
Hörtnagl L., Bamberger I., Graus M., Ruuskanen T., Schnitzhofer R., Müller M., Hansel A. and Wohlfahrt G. (2011) Biotic, abiotic and management controls on methanol exchange above a temperate mountain grassland. 5th International PTR-MS conference, 26 January - 02 February 2011, Obergurgl, Austria.
Bamberger I., Hörtnagl L., Ruuskanen T., Schnitzhofer R., Müller M., Graus M., Karl T., Hansel A. and Wohlfahrt G. (2011) Grassland: a source and sink of VOCs. 5th International PTR-MS conference, 26 January - 02 February 2011, Obergurgl, Austria.
Ruuskanen T., Müller M., Schnitzhofer R., Karl T., Graus M., Bamberger I., Hörtnagl L., Brilli F., Wohlfahrt G. and Hansel A. (2011) Emission and deposition of VOC from/to a mountain grassland: an eddy covariance case study using a PTR-TOF. 5th International PTR-MS conference, 26 January - 02 February 2011, Obergurgl, Austria.
Wohlfahrt G., Hammerle A., Haslwanter A., Hörtnagl L., Irschick C. (2010) Breathing of the Biosphere: A Decade of Ecosystem-Atmosphere Trace Gas Exchange Measurements at the LTER Austria Site Neustift
Bamberger I., Hörtnagl L., Schnitzhofer R., Graus M., Ruuskanen T., Müller M., Dunkl J., Hansel A., Wohlfahrt G. (2010) BVOC fluxes from growing and cut grass above a mountain meadow. EGU2010-4532, European Geophysical Union 2010 General Assembly, 02–07 May 2010, Vienna, Austria.
Müller M., Graus M., Ruuskanen T.,Schnitzhofer R., Bamberger I., Kaser L., Hörtnagl L., Wohlfahrt G., Karl T., Hansel A. (2010) First eddy covariance flux measurements of methanol by PTR-TOF. EGU2010-3606, European Geophysical Union 2010 General Assembly, 02–07 May 2010, Vienna, Austria.
Hörtnagl, L.; Bamberger, I.; Graus, M.; Ruuskanen, T.; Schnitzhofer, R.; Müller, M.; Hansel, A.; Wohlfahrt, G. (2010) Biotic, abiotic and management controls on methanol fluxes above a temperate mountain grassland. EGU2010-4462, European Geophysical Union 2010 General Assembly, 02–07 May 2010, Vienna, Austria.
Irschick, C.; Haslwanter, A.; Hammerle, A.; Wohlfahrt, G.; (2010) Regional variability of grassland CO2 fluxes in Tyrol/Austria. EGU2010-3916, European Geophysical Union 2010 General Assembly, 02–07 May 2010, Vienna, Austria.
Haslwanter, A.; Hammerle, A.; Wohlfahrt, G.; (2010) Scale effects on the controls on mountain grassland leaf stomatal and ecosystem surface conductance to water vapour. EGU2010-3924, European Geophysical Union 2010 General Assembly, 02–07 May 2010, Vienna, Austria.
Hammerle A., Wohlfahrt G., Williams M. (2010) Modelling Carbon Storage of a Temperate Mountain Grassland as Affected by Management. Swiss Global Change Day 2010, 20 April 2010, Bern, Switzerland.
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Hörtnagl L., Bamberger I., Graus M., Ruuskanen T.M., Schnitzhofer R., Hansel A., Wohlfahrt G. (2011) BVOC fluxes
over a temperate mountain grassland. MUSCATEN - Abba workshop: Biogenic VOC: emissions, aerosol formation, modelling. 19-21 October 2011, near Tartu, Estonia.
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Wohlfahrt G., Hammerle A., Hörtnagl L., Bamberger I., Hansel A., Brilli F., Bahn M., Schmitt M., Tasser E., Wieser G., Tenhnen J., Tappeiner U., Cernusca A., Themeßl M., Peichl M. et al. (2011) Carbon, water and energy exchange in Alpine ecosystems. PhenoALP meeting, 12-14 October 2011, Aosta Valley, Italy.
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Irschick C., Carli E., Eliskases C., Frischmann S., Fritsch U., Gobiet A., Haas H., Kapelari S., Norz J., Themeßl M., Zebisch M., Wohlfahrt G. (2011) GrassClim - Interaktive Effekte von Klimawandel und Bewirtschaftung auf den Ertrag und die Kohlendioxidsenken/quellenstärke von Grünland. SparklingScience Tagung 2011.
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Wohlfahrt G., Hammerle A., Bamberger I., Hansel A., Haslwanter A., Hörtnagl L. (2011) Breathing of the Biosphere: A decade of biosphere-atmosphere trace gas exchange research at the LTSER study site Meadow Neustift. 12.Österreichischer Klimatag, 21-22 September 2011, Vienna, Austria.
Wohlfahrt G., Hörtnagl L., Hammerle A., Haslwanter A., Hansel A., Loreto F., Brilli Federico (2011) Leaf and ecosystem response of mountain grassland gas exchange to drought. EGU2011-1317, European Geophysical Union 2011 General Assembly, 4-8 May 2011, Vienna, Austria.
Hammerle A., Haslwanter A., Hörtnagl L., Wohlfahrt G. (2009) The net ecosystem CO2, H2O and energy exchange of mountain grasslands: methodology, controls and modelling. Invited oral presentation, 07 December 2009, ETH Zürich, Switzerland
Wohlfahrt G., Irschick C., Haslwanter A., Hammerle A. (2009) Regional variability of CO2, H2O and energy fluxes: a grassland case study in Tyrol/Austria. Transregional Collaborative Research Centre 32 International workshop, 8-10 June 2009, Aachen, Germany.
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Wohlfahrt, G.; Fenstermaker, L.; Arnone, J. (2008) Large Annual Net Ecosystem CO2 Uptake of a Mojave Desert Ecosystem. EGU2008-A-01414, European Geophysical Union 2008 General Assembly, 13–18 April 2008, Vienna, Austria.
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Haslwanter, A.; Hammerle, A.; Wohlfahrt, G. (2008) Open- vs. closed-path eddy covariance measurements of the net ecosystem carbon dioxide and water vapour exchange: a long-term perspective. EGU2008-A-01151, European Geophysical Union 2008 General Assembly, 13–18 April 2008, Vienna, Austria.
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Wohlfahrt G., Cernusca A. (1999) Scaling up gas exchange from leaves to single plants. In Land-use changes in European Mountain ecosystems. ECOMONT – concepts and results (eds. A. Cernusca, U. Tappeiner & N. Bayfield). Blackwell, p. 191-194.
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Wohlfahrt G., Cernusca A. (1999) Modelling leaf gas exchange. In Land-use changes in European Mountain ecosystems. ECOMONT – concepts and results (eds. A. Cernusca, U. Tappeiner, N. Bayfield). Blackwell, p. 188-191.
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Cescatti A., Chemini C., De Siena C., Gianelle D., Nicolini G., Wohlfahrt G. (1999) Monte Bondone composite landscape, Italy. In Land-use changes in European Mountain ecosystems. ECOMONT – concepts and results (eds. A. Cernusca, U. Tappeiner, N. Bayfield). Blackwell, p. 60-73.
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Bahn M., Wohlfahrt G., Haubner E., Horak I., Michaeler W., Rottmar K., Tappeiner U., Cernusca A. (1999) Leaf gas exchange characteristics, nitrogen contents and specific leaf area of 30 grassland species in differently managed mountain ecosystems in the Eastern Alps. In Land-use changes in European Mountain ecosystems. ECOMONT – concepts and results (eds. A. Cernusca, U. Tappeiner, N. Bayfield). Blackwell, p. 247-255.
Wohlfahrt G., Bahn M., Haslwanter A., Drösler M., Cernusca A. (2005) Challenges to estimating nocturnal CO2 fluxes in terrestrial ecosystems using micrometeorological, ecophysiological and modelling techniques. 90th Ecological Socienty of America Annual Meeting, 6-12 August 2004, Montreal, Canada.
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Wohlfahrt G., Bahn M., Haslwanter A., Newesely Ch., Cernusca A. (2005) Estimation of Daytime Ecosystem Respiration to determine Gross Primary Production of a Mountain Meadow. European Geophysical Union 2005 General Assembly, 24–29 April 2005, Vienna, Austria.
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Hammerle A., Wohlfahrt G., Schmitt M., Haslwanter A., Bahn M., Cernusca A. (2005) Eddy covariance measurements on a steep mountain slope. European Geophysical Union 2005 General Assembly, 24–29 April 2005, Vienna, Austria.
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Wohlfahrt G., Anfang Ch., Bahn M., Haslwanter A., Schmitt M., Drösler M., Pfadenhauer J., Cernusca A. (2004) Quantifying nighttime ecosystem respiration of a meadow using eddy covariance, chambers and modelling. Fluxnet 2004 Open workshop, 13-15 December 2004, Firenze, Italy.
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Wohlfahrt G., Anfang Ch., Bahn M., Cernusca A., Haslwanter A., Schmitt M. (2004) Quantifying ecosystem respiration of a mountain meadow: a multiple constraints approach using eddy covariance, chambers and modelling. European Geophysical Union 1st general assembly, 25–30 April 2004, Nice, France.
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Wohlfahrt G., Anfang Ch., Bahn M., Bianchi K., Haslwanter A., Newesely Ch., Rubatscher D., Wurm E., Cernusca A. (2003) How complex do canopy microclimate models need to be? A comparison of three Lagrangian dispersion models of differing complexity. ILEAPS: International Open Science Conference, 29 September – 3 October 2003, Helsinki, Finnland.
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Wohlfahrt G., Bahn M., Haslwanter A., Newesely Ch., Cernusca A. (2003) Net ecosystem CO2 exchange of mountain grasslands differing in land use. AGU Chapman conference on Ecosystem Interactions with Land Use Change, 14-18 June 2003, Santa Fe, USA.
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Wohlfahrt G., Anfang Ch., Haslwanter A., Cernusca A. (2002) Effects of mowing on the CO2, H2O and energy exchange of a mountain meadow. FLUXNET synthesis meeting, 20-22 June 2002, Orvieto, Italy.
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Wohlfahrt G., Cernusca A. (2001) Momentum transfer by a mountain meadow canopy: a simulation analysis based on Massman’s (1997) model. AGU fall meeting 2001, 10-14 December 2001, San Francisco, USA.
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Wohlfahrt G., Bahn M., Newesely Ch., Sapinsky S., Tappeiner U., Cernusca A. (2001) Canopy structure versus physiology effects on net photosynthesis of mountain grasslands differing in land use. 3rd European Ecological Modelling Conference, 10-15 September 2001, Dubrovnik, Croatia.
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Wohlfahrt G., Bahn M., Newesely Ch., Sapinsky S., Tappeiner U., Cernusca A. (2001) Canopy structure versus physiology effects on net photosynthesis of mountain grasslands differing in land use. 86th Annual meeting of the Ecological Society of America, 5‑10 August 2001, Madison, USA.
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Wohlfahrt G., Bahn M., Newesely Ch., Sapinsky S., Tappeiner U., Cernusca A. (2001) Canopy structure versus physiology effects on net photosynthesis of mountain grasslands differing in land use. 44th IAVS Symposium, 29 July-4 August 2001, Freising-Weinstepan, Germany.
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Wohlfahrt G., Bahn M., Tappeiner U., Cernusca A. (1999) A model of whole plant gas exchange and its application to herbaceous plant species from differently managed mountain grassland ecosystems. Annual meeting of the North American Chapter of the ISEM, 7-12 August 1999, Spokane, USA.
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Wohlfahrt G., Bahn M., Haubner E., Horak I., Köck M., Michaeler W., Rottmar K., Tappeiner U., Cernusca A. (1998) The gas exchange of plants as affected by land use: a simulation study. 7th International Congress of Ecology (INTECOL), 19-25 July 1998, Florence, Italy.
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Wohlfahrt G., Horak I., Bahn M., Tappeiner U., Cernusca A. (1997) Modelling carbon dioxide and water vapour gas exchange in context with land-use changes. Leaf model parameterisation. 1st European Ecological Modelling Conference, 16-19 September 1997, Pula, Croatia.