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Thomas Karl (NCAR, now at UIBK)

1x PTR-QiTOF, 1 x PTR-TOF-MS 8000 2 x custom rebuilt High-Sensitivity PTR-MS

Affiliation: National Center for Atmospheric Research, now at Institute for Meteorology and Geophysics, University of Innsbruck

IONICON instruments at NCAR: 1 x PTR-TOF-MS 8000 2 x custom rebuilt High-Sensitivity PTR-MS

IONICON instrument at UIBK: 1x PTR-QiTOF

Contact person: Univ. Prof. DI. Dr. Thomas Karl


"Why is an IONICON PTR-MS very well suited for your measurement tasks?”

Univ. Prof. DI. Dr. Karl told us: "We use IONICON Instruments for atmospheric trace gas measurements. In particular we explore the ability to measure real-time eddy covariance fluxes, which requires a time resolution of 10Hz. As such PTR-MS has been a very valuable tool for our research."


Most important scientific articles:

1.            Karl, T., Harley, P., Emmons, L., Thornton, B., Guenther, A., Basu, C., Turnipseed, A., and K. Jardine, 2010: Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. Science, 330, 816-819, 10.1126/science.1192534.

2.            Karl, T., Apel, E., Hodzic, A., Riemer, D., Blake, D., and C. Wiedinmyer, 2009: Emissions of volatile organic compounds inferred from airborne flux measurements over a megacity. Atmos. Chem. Phys., 9, 271-285.

3.            Karl, T., A. Guenther, R. J. Yokelson, J. Greenberg, M. Potosnak, D. R. Blake, and P. Artaxo, 2007: The tropical forest and fire emissions experiment: Emission, chemistry, and transport of biogenic volatile organic compounds in the lower atmosphere over Amazonia, J. Geophys. Res., 112, D18302, doi:10.1029/2007JD008539.

4.            Karl, T., Spirig, C., Prevost, P., Stroud, C., Rinne, J., Greenberg, J., Fall, R., and A. Guenther, 2002: Virtual Disjunct Eddy Covariance Measurements of Organic Trace compound Fluxes from a Subalpine forest Using Proton Transfer Reaction Mass Spectrometry, Atmos. Chem. Phys., 2, 279-291.

5.            Karl, T., Guenther, A., Fall, R., Jordan, A. and W. Lindinger, 2001: Eddy Covariance Measurements of Methanol, Acetaldehyde and other oxygenated VOC fluxes from drying hay using Proton-Transfer-Reaction Mass Spectrometry, Atmospheric Environment, 35, 491-495.