Dr. Lukas J. Hörtnagl

 

 

 

 

 

 

 

VOC flux measurements

 

 

 

Papers (peer reviewed)

 

NEW! Brilli F., Hörtnagl L., Bamberger I., Schnitzhofer R., Ruuskanen T.M., Hansel A., Loreto F., Wohlfahrt G. (2012) Qualitative and quantitative characterization of volatile organic compound emissions from cut grass. Environmental Science & Technology 46, 3859-3865.

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. Plant, Cell and Environment, doi: 10.1111/j.1365-3040.2011.02451.x.

Hörtnagl, L., Bamberger I., Graus M., Ruuskanen T. M., Schnitzhofer R., Müller M., Hansel A., and Wohlfahrt G. (2011), Biotic, abiotic, and management controls on methanol exchange above a temperate mountain grassland, J. Geophys. Res., 116, G03021, doi:10.1029/2011JG001641. [OPEN ACCESS]

Bamberger I., Hörtnagl L., Ruuskanen T.M., Schnitzhofer R., Müller M., Graus M., Karl T., Wohlfahrt G., Hansel A. (2011) Deposition fluxes of terpenes over grassland, J. Geophys. Res., 116, D14305, doi:10.1029/2010JD015457. [OPEN ACCESS]

Brilli F., Hörtnagl L., Hammerle A., Haslwanter A., Hansel A., Loreto F., Wohlfahrt G. (2011) Leaf and ecosystem response to soil water availability in mountain grasslands. Agricultural and Forest Meteorology 151, 1731-1740.

Ruuskanen T.M., Müller M., Schnitzhofer R., Karl T., Graus M., Bamberger I., Hörtnagl L., Brilli F., Wohlfahrt G., Hansel A. (2011) Eddy covariance VOC emission and deposition fluxes above grassland using PTR-TOF. Atmospheric Chemistry and Physics 11, 611-625.

Noe S.M., Kimmel V. , Hüve K., Copolovici L.O., Portillo-Estrada M., Püttsepp Ü., Jõgiste K., Niinemets Ü., Hörtnagl L., Wohlfahrt G. (2011) Ecosystem-scale biosphere-atmosphere interactions of a hemiboreal mixed forest stand at Järvselja, Estonia. Forest Ecology and Management 262, 71-81.

Wohlfahrt G., Irschick C., Thalinger B., Hörtnagl L., Obojes N., Hammerle A. (2010) Insights from independent evapotranspiration estimates for closing the energy balance: a grassland case study. Vadose Zone Journal 9, 1025-1033.

Müller M., Graus M., Ruuskanen T.M., Schnitzhofer R., Bamberger I., Kaser L., Titzmann T., Hörtnagl L., Wohlfahrt G., Karl T., Hansel A. (2010) First eddy covariance measurements by PTR TOF. Atmospheric Measurement Techniques 3, 387 395.

Bamberger I., Hörtnagl L., Schnitzhofer R., Graus M., Ruuskanen T., Müller M., Dunkel J., Wohlfahrt G., Hansel A. (2010) BVOC fluxes above mountain grassland. Biogeosciences 7, 1413 1424.

Hörtnagl L., Clement R., Graus M., Hammerle A., Hansel A., Wohlfahrt G. (2010) Dealing with disjunct concentration measurements in eddy covariance applications: a comparison of available approaches. Atmospheric Environment 44, 2024-2032.

Wohlfahrt G., Pilloni S., Hörtnagl L., Hammerle A. (2010) Estimating carbon dioxide fluxes from temperate mountain grasslands using broad-band vegetation indices. Biogeosciences 7, 683-694.

Wohlfahrt G., Hörtnagl L., Hammerle A., Graus M., Hansel A. (2009) Measuring eddy covariance fluxes of ozone with a slow-response analyser. Atmospheric Environment, 43, 4570 - 4576.

Wohlfahrt G., Haslwanter A., Hörtnagl L., Jasoni R L., Fenstermaker L. F., Arnone J. A. III, Hammerle A. (2009) On the consequences of the energy imbalance for calculating surface conductance to water vapour. Agricultural and Forest Meteorology, 149, 1556 - 1559.

 

 

Papers submitted

 

 

 

Posters

NEW! Hörtnagl L., Wohlfahrt G. (2012) Interannual and seasonal variability of CH4 and N2O exchange over a temperate mountain grassland. European Geophysical Union 2012 General Assembly, 22 - 27 April 2012, Vienna, Austria.

NEW! Walser M., Bamberger I., Hörtnagl L., Wohlfahrt G., Hansel A. (2012) Drought induced methanol emission from grassland. European Geophysical Union 2012 General Assembly, 22 - 27 April 2012, Vienna, Austria.

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. AGU fall meeting, 5‑9 December 2011, San Francisco, CA/USA.

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.

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 . International Conference of the Austrian Long-Term Ecosystem Research Network, 02 November 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.

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., Clement R., Graus M., Hammerle A., Hansel A., Wohlfahrt G. (2009) Dealing with disjunct concentration measurements in eddy covariance applications: a comparison of available approaches with particular reference to VOC fluxes measured with a PTR-MS. EGU2009-4023, European Geophysical Union 2009 General Assembly, 19–24 April 2009, Vienna, Austria.

Hammerle A., Hörtnagl L., Wohlfahrt G. (2009) Using broad-band reflectance indices to estimate carbon dioxide fluxes of a temperate mountain grassland. EGU2009-4876, European Geophysical Union 2009 General Assembly, 19–24 April 2009, Vienna, Austria.

Wohlfahrt G., Hörtnagl L., Bamberger I., Schnitzhofer R., Dunkl J., Hammerle A., Graus M., Hansel A. (2009) Methanol emissions from a grassland: a role of ozone stress? EGU2009-4195, European Geophysical Union 2009 General Assembly, 19–24 April 2009, Vienna, Austria.

Wohlfahrt G., Hoertnagl L., Bamberger I., Schnitzhofer R., Dunkel J., Hammerle A., Graus M., Hansel A. (2008) The VOC-Ozone connection: a grassland case study. AGU fall meeting, 15‑19 December 2008, San Francisco, CA/USA.

Hammerle A., Hörtnagl L., Wohlfahrt G. (2008) Using broad‑band reflectance indices to estimate carbon dioxide fluxes from a temperate mountain grassland. AGU fall meeting, 15‑19 December 2008, San Francisco, CA/USA.

Hörtnagl L., Bamberger I., Schnitzhofer R., Dunkel J., Hammerle A., Graus M., Hansel A., Wohlfahrt G. (2008) The VOC-Ozone connection: a grassland case study. Marie Curie iLeaps Conference 16-20 November 2008, Hyeres, France.

Hörtnagl, L.; Hammerle, A.; Wohlfahrt, G. (2008) Dealing with disjunct concentration measurements in eddy covariance applications: a comparison of available approaches. EGU2008-A-01152, European Geophysical Union 2008 General Assembly, 13–18 April 2008, Vienna, Austria.

 

 

Presentations

 

NEW! Bamberger I., Hörtnagl L., Ruuskanen T.M., Schnitzhofer R., Müller M., Graus M., Karl T., Wohlfahrt G., Hansel A. (2012) Deposition of terpenes to vegetation – a paradigm shift towards bidirectional VOC exchange? European Geophysical Union 2012 General Assembly, 22 - 27 April 2012, Vienna, Austria.

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.

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.

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.

Wohlfahrt G., Hammerle A., Hörtnagl L., Irschick I., Haslwanter A. (2010) Trace gas fluxes from/to grassland: A decade of micrometeorological research at a hay meadow in the Stubai Valley/Austria. Invited oral presentation, 11 October 2010, ETH Zürich, Switzerland.

Wohlfahrt G., Irschick C., Thalinger B., Hörtnagl L., Obojes N., Hammerle A. (2010) Multiple constraints on grassland evapotranspiration: implications for closing the energy balance. EGU2010-4210, European Geophysical Union 2009 General Assembly, 2–7 May 2010, Vienna, Austria.

Wohlfahrt G., Pilloni S., Hörtnagl L., Hammerle A. (2010) Estimating carbon dioxide fluxes from temperate mountain grasslands using broad-band vegetation indices. COST action ES0903, 28-30 April 2010, Viote del Monte Bondone, Italy.

Wohlfahrt G., Hörtnagl L., Haslwanter A., Hammerle A. (2010) Effects of management on the net ecosystem CO2 exchange of grasslands. SINKS project 7, Expert workshop, 4-5 March 2010, Kolding, Denmark.

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., Hörtnagl L., Hammerle A. (2009) Grünland – Senke oder Quelle für Kohlendioxid: empirische Befunde und Modellanalysen. 4. Klimaseminar, LFZ Raumberg-Gumpenstein. 10 September 2009, Raumberg-Gumpenstein, Austria.

Wohlfahrt G., Hoertnagl L., Bamberger I., Schnitzhofer R., Dunkel J., Hammerle A., Graus M., Hansel A. (2009) Stress induced BVOC exchange from grassland. VOCBAS science meeting, 14-17 January 2009, Taagepera, Estonia.