Thomas Karl

Univ.-Prof. DI Dr. Thomas Karl

Deputy Head of Institute
Atmospheric Physics and Chemistry


  +43 512 507 54455

 Room 60830      Website of the Research Group APC

Research Interests

  • Physical, Environmental and Atmospheric Sciences
  • Biosphere-Atmosphere Interactions
  • Atmospheric Chemistry
  • Air Quality
  • Micrometeorology
  • Biogeochemistry
  • Chemical Ionization Mass Spectrometry (CIMS)



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Monograph, Scientific
  • Serafin, S.; Rotach, M.W.; Arpagaus, M.; Colfescu, I.; Cuxart, J.; De Wekker, S.F.J.; Evans, M.; Grubisic, V.; Kalthoff, N.; Karl, T.; Kirshbaum, D.J.; Lehner, M.; Mobbs, S.; Paci, A.; Palazzi, E.; Raudzens, Bailey A.; Schmidli, J.; Wohlfahrt, G.; Zardi, D. (2020): Multi-scale transport and exchange processes in the atmosphere over mountains. Programme and experiment. Innsbruck: innsbruck university press (IUP). ISBN 978-3-99106-003-1. (Full-text) (DOI)

Contributions to Books / Journals

Journal Article (Original Paper)
  • Kaser, L.; Peron, A.; Graus, M.; Striednig, M.; Wohlfahrt, G.; Juráň, S.; Karl, T. (2022): Interannual variability of terpenoid emissions in an alpine city.
    In: Atmospheric Chemistry and Physics 22/8, pp. 5603 - 5618. (DOI) (Web link)

  • Nicolini, G.; Antoniella, G.; Carotenuto, F.; Christen, A.; Ciais, P.; Feigenwinter, C.; Gioli, B.; Stagakis, S.; Velasco, E.; Vogt, R.; Ward, H. C.; Barlow, J.; Chrysoulakis, N.; Duce, P.; Graus, M.; Helfter, C.; Heusinkveld, B.; Järvi, L.; Karl, T. et al. (2022): Direct observations of CO2 emission reductions due to COVID-19 lockdown across European urban districts.
    In: Science of the Total Environment 830, No. 154662. (DOI) (Web link)

  • Rotach, M. W.; Serafin, S.; Ward, H. C.; Arpagaus, M.; Colfescu, I.; Cuxart, J.; De Wekker, S. F. J.; Grubišić, V.; Kalthoff, N.; Karl, T. G.; Kirshbaum, D. J.; Lehner, M.; Mobbs, S.; Paci, A.; Palazzi, E.; Bailey, A.; Schmidli, J.; Wittmann, C.; Wohlfahrt, G.; Zardi, D. (2022): A collaborative effort to better understand, measure and model atmospheric exchange processes over mountains.
    In: Bulletin Of The American Meteorological Society 103/5, pp. E1282 - E1295. (DOI) (Web link)

  • Ward, H. C.; Rotach, M.; Gohm, A.; Graus, M.; Karl, T.; Haid, M.; Umek, L.; Muschinski, T. (2022): Energy and mass exchange at an urban site in mountainous terrain – the Alpine city of Innsbruck.
    In: Atmospheric Chemistry and Physics 22/10, pp. 6559 - 6593. (DOI) (Web link)

  • Fischer, Lukas; Breitenlechner, Martin; Canaval, Eva; Scholz, Wiebke; Striednig, Marcus; Graus, Martin; Karl, Thomas G.; Petäjä, Tuukka; Kulmala, Markku; Hansel, Armin (2021): First Eddy Covariance Flux Measurements of Semi-Volatile Organic Compounds with the PTR3-TOF-MS.
    In: Atmospheric Measurement Techniques 14/12, pp. 8019 - 8039. (Full-text) (DOI) (Web link)

  • Fitzky, A. C.; Peron,, A.; Kaser, L.; Karl, T.; Graus, M.; Tholen, D.; Pesendorfer, M.; Mahmoud, M.; Sandén, H.; Rewald, B. (2021): Diversity and Interrelations Among the Constitutive VOC Emission Blends of Four Broad-Leaved Tree Species at Seedling Stage.
    In: Frontiers in Plant Science 12, No. 708711. (DOI) (Web link)

  • Huangfu, Y.; Yuan, B.; Wang, S.; Wu, C.; He, X.; Qi, J.; de Gouw, J.; Warneke, C.; Gilman, J. B.; Wisthaler, A.; Karl, T.; Graus, M.; Jobson, B. T.; Shao, M. (2021): Revisiting Acetonitrile as Tracer of Biomass Burning in Anthropogenic-Influenced Environments.
    In: Geophysical Research Letters 48/11, Nr. e2020GL092322. (DOI) (Web link)

  • Lamprecht, Ch.; Graus, M.; Striednig, M.; Stichaner, M.; Karl, Th. (2021): Decoupling of urban CO2 and air pollutant emission reductions during the European SARS-CoV-2 lockdown.
    In: Atmospheric Chemistry and Physics 21/4, pp. 3091 - 3102. (DOI) (Web link)

  • Peron, A.; Kaser, L.; Fitzky, A.C.; Graus, M.; Halbwirth, H.; Greiner, J.; Wohlfahrt, G.; Rewald, B.; Sanden, H.; Karl, T. (2021): Combined effects of ozone and drought stress on the emission of biogenic volatile organic compounds from Quercus robur L.
    In: Biogeosciences 18/2, pp. 535 - 556. (DOI) (Web link)

  • Brown, J. S.; Shapkalijevski, M. M.; Krol, M. C.; Karl, T.; Ouwersloot, H.G.; Moene, A.F.; Patton, E.G.; Vila-Gueraude Arllano, J. (2020): Ozone exchange within and above an irrigated Californian orchard.
    In: Tellus. Series B: Chemical and Physical Meteorology 72/1, pp. 1 - 17. (DOI) (Web link)

  • Canaval, E.; Millet, D.B.; Zimmer, I.; Nosenko, T.; Georgii, E.; Partoll, E.M.; Fischer, L.; Alwe, H.D.; Kulmala, M.; Karl, T.; Schnitzler, J.-P.; Hansel, A. (2020): Rapid conversion of isoprene photooxidation products in terrestrial plants.
    In: Communications Earth & Environment 1, No. 44. (DOI) (Web link)

  • Karl, T.; Gohm, A.; Rotach, M.; Ward, H.; Graus, M.; Cede, A.; Wohlfahrt, G.; Hammerle, A.; Haid, M.; Tiefengraber, M.; Lamprecht, C.; Vergeiner, J.; Kreuter, A.; Wagner, J.; Staudinger, M. (2020): Studying Urban Climate and Air quality in the Alps - The Innsbruck Atmospheric Observatory.
    In: Bulletin Of The American Meteorological Society 101/4, pp. E488 - E507. (DOI) (Web link)

  • Sarkar, C; Turnipseed, A; Shertz, S; Karl, T; Potosnak, M; Bai, JH; Serca, D; Bonal, D; Burban, B; Lopes, PRC; Vega, O; Guenther, AB (2020): A portable, low-cost relaxed eddy accumulation (REA) system for quantifying ecosystem-level fluxes of volatile organics.
    In: Atmospheric Environment 242, No. 117764. (DOI) (Web link)

  • Striednig, M.; Graus, M.; Märk, T.; Karl, T. (2020): InnFLUX – an open-source code for conventional and disjunct eddy covariance analysis of trace gas measurements: an urban test case.
    In: Atmospheric Measurement Techniques 13/3, pp. 1447 - 1465. (DOI) (Web link)

  • Spielmann, F.M.; Wohlfahrt, G.; Hammerle, A.; Kitz, F.; Migliavacca, M.; Alberti, G.; Ibrom, A.; El-Madany, T. S.; Gerdel, K.; Moreno, G.; Kolle, O.; Karl, T.; Peressoti, A.; Delle Vedove, G. (2019): Gross Primary Productivity of Four European Ecosystems Constrained by Joint CO2 and COS Flux Measurements.
    In: Geophysical Research Letters 46/10, pp. 5284 - 5293. (DOI) (Web link)

  • Deventer, M.J.; von der Heyden, L.; Lamprecht, C.; Graus, M.; Karl, T.; Held, A. (2018): Aerosol particles during the Innsbruck Air Quality Study (INNAQS): Fluxes of nucleation to accumulation mode particles in relation to selective urban tracers.
    In: Atmospheric Environment 190, pp. 376 - 388. (DOI)

  • Filella, I.; Zhang, C.; Seco, R.; Potosnak, M.; Guenther, A.; Karl, Thomas; Gamon, John; Pallardy, Stephen; Gu, Lianhong; Kim, Saewung; Balzarolo, Manuela; Fernandez-Martinez, Marcos; Penuelas, Josep (2018): A MODIS Photochemical Reflectance Index (PRI) as an Estimator of Isoprene Emissions in a Temperate Deciduous Forest.
    In: Remote Sensing 10/4, No. 557. (DOI) (Web link)

  • Hodshire, A. L.; Palm, B. B.; Alexander, M. L.; Bian, Q.; Campuzano-Jost, P.; Cross, E. S.; Day, D. A.; de Sá, S. S.; Guenther, A. B.; Hansel, A.; Hunter, J. F.; Jud, W.; Karl, T.; et al. (2018): Constraining nucleation, condensation, and chemistry in oxidation flow reactors using size-distribution measurements and aerosol microphysical modeling.
    In: Atmospheric Chemistry and Physics 18, pp. 12433 - 12460. (DOI) (Web link)

  • Jiang, X.; Guenther, A.; Potosnak, Mark; Geron, C.; Seco, R.; Karl, Thomas; Kim, Saewung; Gu, Lianhong; Pallardy, Stephen (2018): Isoprene emission response to drought and the impact on global atmospheric chemistry.
    In: Atmospheric Environment 183, pp. 69 - 83. (DOI) (Web link)

  • Karl, T.; Striednig, M.; Graus, M.; Hammerle, A.; Wohlfahrt, G. (2018): Urban flux measurements reveal a large pool of oxygenated volatile organic compound emissions.
    In: PNAS. Proceedings of the National Academy of Sciences 115/6, pp. 1186 - 1191. (DOI) (Web link)

  • Pichelstorfer, Lukas; Stolzenburg, Dominik; Ortega, John; Karl, Thomas; Kokkola, Harri; Laakso, Anton; Lehtinen, Kari E.J.; Smith, James N.; McMurry, Peter H.; Winkler, Paul M. (2018): Resolving nanoparticle growth mechanisms from size- and time-dependent growth rate analysis.
    In: Atmospheric Chemistry and Physics 18/2, pp. 1307 - 1323. (DOI)

  • von der Heyden, L.; Deventer, M. J.; Graus, M.; Karl, T.; Lamprecht, C.; Held, A. (2018): Aerosol particles during the Innsbruck Air Quality Study (INNAQS): The impact of transient fluxes on total aerosol number exchange.
    In: Atmospheric Environment 190, pp. 389 - 400. (DOI) (Web link)

  • Ye, Chunxiang; Zhou, Xianliang; Pu, Dennis; Stutz, Jochen; Festa, James; Spolaor, Max; Tsai, Catalina; Cantrell, Christopher; Mauldin, Roy L.; Weinheimer, Andrew; Hornbrook, Rebecca S.; Apel, Eric C.; Guenther, Alex; Kaser, Lisa; Yuan, Bin; Karl, Thomas (2018): Tropospheric HONO distribution and chemistry in the southeastern US.
    In: Atmospheric Chemistry and Physics 18/2, pp. 9107 - 9120. (DOI)

  • Hunter, James; Day, Douglas; Palm, Brett; Yatavelli, Reddy L.; Chan, Arthur; Kaser, Lisa; Cappellin, Luca; Hayes, Patrick.; Cross, E.; Carrasquillo, A.; Campuzano-Jost, P.; Stark, H.; Zhao, Y.; Hohaus, T.; Smith, J.; Hansel, Armin; Karl, Thomas; et al. (2017): Comprehensive characterization of atmospheric organic carbon at a forested site.
    In: Nature Geoscience 10, pp. 748 - 753. (DOI) (Web link)

  • Karl, T.; Graus, M.; Striednig, M.; Lamprecht, C.; Hammerle, A.; Wohlfahrt, G.; Held, A.; von der Heyden, L.; Deventer, M. J.; Krismer, A.; Haun, C.; Feichter, R.; Lee, J. (2017): Urban eddy covariance measurements reveal significant missing NOx emissions in Central Europe.
    In: Scientific Reports 7, No. 2536. (DOI)

  • Palm, Brett B.; Campuzano-Jost, Pedro; Day, Douglas A.; Ortega, Amber M.; Fry, Juliane L.; Brown, Steven S.; Zarzana, Kyle J.; Dube, William; Wagner, Nicholas L.; Draper, Danielle C.; Kaser, Lisa; Jud, Werner; Karl, Thomas; Hansel, Armin; Gutiérrez-Montes, Cándido; Jimenez, Jose L. (2017): Secondary organic aerosol formation from in situ OH, O3, and NO3 oxidation of ambient forest air in an oxidation flow reactor.
    In: Atmospheric Chemistry and Physics 17/8, pp. 5331 - 5354. (DOI)

  • Seco, R.; Karl, T.; Turnipseed, A.; Greenberg, J; Guenther, A.; Llusia, J.; Peñuelas, J.; Dicken, U.; Rotenberg, E.; Saewung, K; Yakir, D. (2017): Springtime ecosystem-scale monoterpene fluxes from Mediterranean pine forests across a precipitation gradient.
    In: Agricultural and Forest Meteorology 237-238, pp. 150 - 159. (DOI)

  • Vaughan, A.; Lee, J.; Shaw, M.; Misztal, P.; Metzger, S.; Vieno, M.; Davison, B.; Karl, T.; Carpenter, L.; Lewis, A.C.; Purvis, R.M.; Goldstein, A.H.; Hewitt, C.N. (2017): VOC emission rates over London and South East England obtained by airborne eddy covariance.
    In: Faraday Discussions 200, pp. 599 - 620. (DOI)

  • Yu, H.; Guenther, A.; Gu, D.; Warneke, C.; Geron, C.; Goldstein, A.; Graus, M.; Karl, T.; Kaser, L.; Misztal, P.; Yuan, B. (2017): Airborne measurements of isoprene and monoterpene emissions from southeastern U.S. forests.
    In: Science of the Total Environment 595, pp. 149 - 158. (DOI) (Web link)

  • Zheng, Y; Unger, N.; Tadic, J.; Seco, R.; Guenther, A.; Barkley, M.; Potosnak, M.; Murray, L.; Michalak, A.; Qui, X.; Kim, S.; Karl, T.; Lianghong, Gu; Pallardy, S.G. (2017): Drought impacts on photosynthesis, isoprene emission and atmospheric formaldehyde in a mid-latitude forest.
    In: Atmospheric Environment 167, pp. 190 - 201. (DOI)

  • Alves, E. G.; Jardine, K.; Tota, J.; Jardine, A.; Yãnez-Serrano, A. M.; Karl, T.; Tavares, J.; Nelson, B.; Gu, D.; Stavrakou, T.; Martin, S.; Artaxo, P.; Manzi, A.; Guenther, A. (2016): Seasonality of isoprenoid emissions from a primary rainforest in central Amazonia.
    In: Atmospheric Chemistry and Physics 16/6, pp. 3903 - 3925. (DOI)

  • Chan, A. W. H.; Kreisberg, N. M.; Hohaus, T.; Campuzano-Jost, P.; Zhao, Y.; Day, D. A.; Kaser, L.; Karl, T.; Hansel, A.; Teng, A. P.; Ruehl, C. R.; Sueper, D. T.; Jayne, J. T.; Worsnop, D. R.; Jimenez, J. L.; Hering, S. V.; Goldstein, A. H. (2016): Speciated measurements of semivolatile and intermediate volatility organic compounds (S/IVOCs) in a pine forest during BEACHON-RoMBAS 2011.
    In: Atmospheric Chemistry and Physics 16/2, pp. 1187 - 1205. (DOI)

  • Emmerson, Kathryn M.; Galbally, Ian E.; Guenther, Alex B.; Paton-Walsh, Clare; Guerette, Elise-Andree; Cope, Martin E.; Keywood, Melita D.; Lawson, Sarah J.; Molloy, Suzie B.; Dunne, Erin; Thatcher, Marcus; Karl, Thomas; Maleknia, Simin D. (2016): Current estimates of biogenic emissions from eucalypts uncertain for southeast Australia.
    In: Atmospheric Chemistry and Physics 16/11, pp. 6997 - 7011. (DOI) (Web link)

  • Geron, C.; Daly, R.; Harley, P.; Rasmussen, R.; Seco, R.; Guenther, A.; Karl, T.; Gu, L. (2016): Large drought-induced variations in oak leaf volatile organic compound emissions during PINOT NOIR 2012.
    In: Chemosphere 146, pp. 8 - 21. (DOI)

  • Kravitz, Ben; Guenther, Alex; Gu, Lianhong; Karl, Thomas; Kaser, Lisa; Pallardy, Stephen; Peñuelas, Josep; Potosnak, Mark; Seco, Roger (2016): A new paradigm of quantifying ecosystem stress through chemical signatures.
    In: Ecosphere 7/11, Nr. e01559. (DOI)

  • Misztal, P. K.; Avise, J. C.; Karl, T.; Scott, K.; Jonsson, H. J.; Guenther, A. B.; Goldstein, A. H. (2016): Evaluation of regional isoprene emission factors and modeled fluxes in California.
    In: Atmospheric Chemistry and Physics 16/15, pp. 9611 - 9628. (DOI)

  • Palm, B.B.; Campuzano-Jost, P.; Ortega, A.M.; Day, D.A.; Kaser, L.; Jud, W.; Karl, T.; Hansel, A.; Hunter, J.F.; Cross, E.S.; Kroll, J.H.; Peng, Z.; Brune, W.H.; Jimenez, J.L. (2016): In situ secondary organic aerosol formation from ambient pine forest air using an oxidation flow reactor.
    In: Atmospheric Chemistry and Physics 16, pp. 2943 - 2970. (DOI) (Web link)

  • Rinne, J.; Karl, T.; Guenther, A. (2016): Simple, stable, and affordable: Towards long-term ecosystem scale flux measurements of VOCs.
    In: Atmospheric Environment 131, pp. 225 - 227. (DOI)

  • Vaughan, Adam Robert; Lee, James; Misztal, Pawel; Metzger, Stefan; Shaw, Marvin David; Lewis, Alastair C.; Purvis, Ruth; Carslaw, David; Goldstein, Allen; Hewitt, C. Nicholas; Davison, Brian; Beevers, Sean D.; Karl, Thomas (2016): Spatially resolved flux measurements of NOx from London suggest significantly higher emissions than predicted by inventories.
    In: Faraday Discussions 189, pp. 455 - 472. (DOI)

  • Ye, CX; Zhou, XL; Pu, D; Stutz, J.; Festa, J.; Spolaor, M.; Tsai, C.; Cantrell, C.; Mauldin, R. L.; Campos, T.; Weinheimer, A.; Hornbrook, R. S.; Apel, E. C.; Guenther, A.; Kaser, L.; Yuan, B.; Karl, T.; Haggerty, J.; Hall, S.; Ullmann, K.; Smith, J. N.; Ortega, J.; Knote, C. (2016): Rapid cycling of reactive nitrogen in the marine boundary layer.
    In: Nature 532/7600, pp. 489 - 491. (DOI)

  • Chen, Q.; Farmer, D. K.; Rizzo, L. V.; Pauliquevis, T.; Kuwata, M.; Karl, T. G.; Guenther, A.; Allan, J. D.; Coe, H.; Andreae, M. O.; Pöschl, U.; Jimenez, J. L.; Artaxo, P.; Martin, S. T. (2015): Submicron particle mass concentrations and sources in the Amazonian wet season (AMAZE-08).
    In: Atmospheric Chemistry and Physics 15/7, pp. 3687 - 3701. (DOI) (Web link)

  • Hu, W.W.; Campuzano-Jost, P.; Palm, B.B.; Day, D.A.; Ortega, A.M.; Hayes, P.L.; Krechmer, J.E.; Chen, Q.; Kuwata, M.; Liu, Y.J.; De Sá, S.S.; McKinney, K.; Martin, S.T.; Hu, M.; Budisulistiorini, S.H.; Riva, M.; Surratt, J.D.; St. Clair, J.M.; Isaacman-Van Wertz, G.; Yee, L.D.; Goldstein, A.H.; Carbone, S.; Brito, J.; Artaxo, P.; De Gouw, J.A.; Koss, A.; Wisthaler, A.; Mikoviny, T.; Karl, T.; Kaser, L.; Jud, W.; Hansel, A.; Docherty, K.S.; Alexander, M.L.; Robinson, N.H.; Coe, H.; Allan, J.D.; Canagaratna, M.R.; Paulot, F.; Jimenez, J.L. (2015): Characterization of a real-time tracer for isoprene epoxydiols-derived secondary organic aerosol (IEPOX-SOA) from aerosol mass spectrometer measurements.
    In: Atmospheric Chemistry and Physics 15/20, pp. 11807 - 11833. (DOI)

  • Kaser, L.; Karl, T.; Yuan, B.; Mauldin, R. L.; Cantrell, C. A.; Guenther, A. B.; Patton, E. G.; Weinheimer, A. J.; Knote, C.; Orlando, J.; Emmons, L.; Apel, E.; Hornbrook, R.; Shertz, S.; Ullmann, K.; Hall, S. (2015): Chemistry-turbulence interactions and mesoscale variability influence the cleansing efficiency of the atmosphere.
    In: Geophysical Research Letters 42/24, pp. 10894 - 10903. (DOI)

  • Misztal, P. K.; Hewitt, C. N.; Wildt, J.; Blande, J. D.; Eller, A. S . D; Fares, D. S.; Gentner, D. R.; Gilman, J. B.; Graus, M.; Greenberg, J.; Guenther, A. B.; Hansel, A.; Harley, P.; Huang, M.; Jardine, K.; Karl, T.; Kaser, L.; Keutsch, F. N.; Kiendler-Scharr, A.; Kleist, E.; Lerner, B. M.; Li, T.; Mak, J.; Noelscher, A. C.; Schnitzhofer, R.; Sinha, V.; Thornton, B.; Warneke, C.; Wegener, F.; Werner, C.; Williams, J.; Worton, D. R.; Yassaa, N.; Goldstein, A. H. (2015): Atmospheric benzenoid emissions from plants rival those from fossil fuels.
    In: Scientific Reports 5, No. 12064. (DOI)

  • Seco, Roger; Karl, Thomas; Guenther, Alex; Hosman, Kevin P.; Pallardy, Stephen G.; Gu, Lianhong; Geron, Chris; Harley, Peter; Kim, Saewung (2015): Ecosystem-scale volatile organic compound fluxes during an extreme drought in a broadleaf temperate forest of the Missouri Ozarks (central USA).
    In: Global Change Biology 21/10, pp. 3657 - 3674. (DOI) (Web link)

  • Thalman, R.; Baeza-Romero, M. T.; Ball, S. M.; Borrás, E.; Daniels, M. J. S.; Goodall, I. C. A.; Henry, S. B.; Karl, T.; Keutsch, F. N.; Kim, S.; Mak, J.; Monks, P. S.; Muñoz, A.; Orlando, J.; Peppe, S.; Rickard, A. R.; Ródenas, M.; Sánchez, P.; Seco, R.; Su, L.; Tyndall, G.; Vázquez, M.; Vera, T.; Waxman, E.; Volkamer, R. (2015): Instrument intercomparison of glyoxal, methyl glyoxal and NO2 under simulated atmospheric conditions.
    In: Atmospheric Measurement Techniques 8/4, pp. 1835 - 1862. (DOI) (Web link)

  • Wohlfahrt, G.; Amelynck, C.; Ammann, C.; Arneth, A.; Bamberger, I.; Goldstein, A. H.; Gu, L.; Guenther, A.; Hansel, A.; Heinesch, B.; Holst, T.; Hörtnagl, L.; Karl, T.; Laffineur, Q.; Neftel, A.; McKinney, K.; Munger, J. W.; Pallardy, S. G.; Schade, G. W.; Seco, R.; Schoon, N. (2015): An ecosystem-scale perspective of the net land methanol flux: synthesis of micrometeorological flux measurements.
    In: Atmospheric Chemistry and Physics 15, pp. 7413 - 7427. (DOI) (Web link)

  • Wolfe, G.M.; Hanisco, T.F.; Arkinson, H.L.; Bui, T.P.; Crounse, J.D.; Dean-Day, J.; Goldstein, A.; Guenther, A.; Hall, S.R.; Huey, G.; Jacob, D.J.; Karl, T.; Kim, P.S.; Liu, X.; Marvin, M.R.; Mikoviny, T.; Misztal, P.K.; Nguyen, T.B.; Peischl, J.; Pollack, I.; Ryerson, T.; Clair, J.M.St.; Teng, A.; Travis, K.R.; Ullmann, K.; Wennberg, P.O.; Wisthaler, A. (2015): Quantifying sources and sinks of reactive gases in the lower atmosphere using airborne flux observations.
    In: Geophysical Research Letters 42/19, pp. 8231 - 8240. (DOI)

  • Yuan, B.; Kaser, L.; Karl, T.; Graus, M.; Peischl, J.; Campos, T. L.; Shertz, S.; Apel, E. C.; Hornbrook, R. S.; Hills, A.; Gilman, J. B.; Lerner, B. M.; Warneke, C.; Flocke, F. M.; Ryerson, T. B.; Guenther, A. B.; de Gouw, J. A. (2015): Airborne flux measurements of methane and volatile organic compounds over the Haynesville and Marcellus shale gas production regions.
    In: Journal of Geophysical Research: Atmospheres 120/12, pp. 6271 - 6289. (DOI) (Web link)

  • Zhou, L.; Gierens, R.; Sogachev, A.; Morgensen, D.; Ortega, J.; Smith, J.N.; Harley, P.C.; Prenni, A.J.; Levin, E.J.T.; Turnipseed, A.; Rusanen, A.; Smolander, S.; Guenther, A.B.; Kulmala, M.; Karl, T.; Boy, M. (2015): Contribution from biogenic organic compounds to particle growth during the 2010 BEACHON-ROCS campaign in a Colorado temperate needleleaf forest.
    In: Atmospheric Chemistry and Physics 15, pp. 8643 - 8656. (DOI) (Web link)

  • Karl, Thomas; Kaser, Lisa; Turnipseed, Andrew (2014): Eddy covariance measurements of isoprene and 232-MBO based on NO+ time-of-flight mass spectrometry.
    In: International Journal of Mass Spectrometry 365-366, pp. 15 - 19. (DOI) (Web link)

  • Misztal, P.K.; Karl, T.; Weber, R.; Jonsson, H. H.; Guenther, A. B.; Goldstein, A. H. (2014): Airborne flux measurements of biogenic isoprene over California.
    In: Atmospheric Chemistry and Physics 14/19, pp. 10631 - 10647. (DOI) (Web link)

  • Nakashima, Yoshihiro; Kato, Shungo; Greenberg, Jim; Harley, Peter; Karl, Thomas; Turnipseed, Andrew; Apel, Eric; Guenther, Alex; Smith, Jim; Kajii, Yoshizumi (2014): Total OH reactivity measurements in ambient air in a southern Rocky mountain ponderosa pine forest during BEACHON-SRM08 summer campaign.
    In: Atmospheric Environment 85, pp. 1 - 8. (DOI) (Web link)

  • Ortega, J.; Turnipseed, A.; Guenther, A.B.; Karl, T.; Day, D.A.; Gochis, D.; Huffman, J.A.; Prenni, A.J.; Levin, E.J.T.; Kreidenweis, S.M.; DeMott, P.J.; Tobo, Y.; Patton, E. G.; Hodzic, A.; Cui, Y.; Harley, P.C.; Hornbrook, R.H.; Apel, E.C.; Monson, R.K.; Eller, A. S.D.; Greenberg, J.P.; Barth, M.; Campuzano-Jost, P.; Palm, B.B.; Jimenez, J.L.; Aiken, A.C.; Dubey, M.K.; Geron, C.; Offenberg, J.; Ryan, M.G.; Fornwalt, P.J.; Pryor, S.C.; Keutsch, F.N.; DiGangi, J.P.; Chan, A.W.H.; Goldstein, A.H.; Wolfe, G.M.; Kim, S.; Kaser, L.; Schnitzhofer, R.; Hansel, A.; Cantrell, C.A.; Mauldin III, R.L.; Smith, J.N. (2014): Overview of the Manitou Experimental Forest Observatory: site description and selected science results from 2008–2013.
    In: Atmospheric Chemistry and Physics 14/12, pp. 6345 - 6367. (DOI) (Web link)

  • Potosnak, Mark J.; LeStourgeon, Lauren; Pallardy, Stephen G.; Hosman, Kevin P.; Gu, Lianhong; Karl, Thomas; Geron, Chris; Guenther, Alex B. (2014): Observed and modeled ecosystem isoprene fluxes from an oakdominated temperate forest and the influence of drought stress.
    In: Atmospheric Environment 84, pp. 314 - 322. (DOI) (Web link)

  • Wolfe, G.M.; Cantrell, C.; Kim, S.; Mauldin III, R.L.; Karl, T.; Harley, P.; Turnipseed, A.; Zheng, W.; Flocke, F.; Apel, E.C.; Hornbrook, R.S.; Hall, S.R.; Ullmann, K.; Henry, S.B.; DiGangi, J.P.; Boyle, E.S.; Kaser, L.; Schnitzhofer, R.; Hansel, A.; Graus, M.; Nakashima, Y.; Kajii, Y.; Guenther, A.; Keutsch, F.N. (2014): Missing peroxy radical sources within a summertime ponderosa pine forest.
    In: Atmospheric Chemistry and Physics 14, pp. 4715 - 4732. (DOI)

  • Yu, Huan; Ortega, John; Smith, James N.; Guenther, Alex B.; Kanawade, V. P.; You, Yi; Liu, Yiying; Hosman, Kevin; Karl, Thomas; Seco, Roger; Geron, Chris; Pallardy, Stephen G.; Gu, Lianhong; Mikkila, Jyri; Lee, Shan-Hu (2014): New Particle Formation and Growth in an Isoprene-Dominated Ozark Forest: From Sub-5 nm to CCN-Active Sizes.
    In: Aerosol Science and Technology 48/12, pp. 1285 - 1298. (DOI)

  • Fry, J. L.; Draper, D. C.; Zarzana, K. J.; Campuzano-Jost, P.; Day, D. A.; Jimenez, J. L.; Brown, S. S.; Cohen, R. C.; Kaser, L.; Hansel, A.; Cappellin, L.; Karl, T.; Hodzic Roux, A.; Turnipseed, A.; Cantrell, C.; Lefer, B. L.; Grossberg, N. (2013): Observations of gas- and aerosol-phase organic nitrates at BEACHON-RoMBAS 2011.
    In: Atmospheric Chemistry and Physics 13/17, pp. 8585 - 8605. (DOI) (Web link)

  • Hodzic, A.; Madronich, S.; Aumont, B.; Lee-Taylor, J.; Karl, T.; Camredon, M.; Mouchel-Vallon C. (2013): Limited influence of dry deposition of semivolatile organic vapors on secondary organic aerosol formation in the urban plume.
    In: Geophysical Research Letters 40/12, pp. 3302 - 3307. (DOI)

  • Jardine, K.J.; Meyers, K.; Abrell, L.; Alves, E.G.; Yanez Serrano, A.M.; Kesselmeier, J.; Karl, T.; Guenther, A.; Chambers, J.Q.; Vickers, C. (2013): Emissions of putative isoprene oxidation products from mango branches under abiotic stress.
    In: Journal of Experimental Botany 64/12, pp. 3669 - 3679. (DOI)

  • Karl, T.; Misztal, P. K.; Jonsson, H. H.; Shertz, S.; Goldstein, A.H.; Guenther, A.B. (2013): Airborne Flux Measurements of BVOCs above Californian Oak Forests: Experimental Investigation of Surface and Entrainment Fluxes, OH Densities, and Damköhler Numbers.
    In: Journal of the Atmospheric Sciences 70/10, pp. 3277 - 3287. (DOI)

  • Kaser, L.; Karl, T.; Guenther, A.; Graus, M.; Schnitzhofer, R.; Turnipseed, A.; Fischer, L.; Harley, P.; Madronich, M.; Gochis, D.; Keutsch, F. N.; Hansel, A: (2013): Undisturbed and disturbed above canopy ponderosa pine emissions: PTR-TOF-MS measurements and MEGAN 2.1 model results.
    In: Atmospheric Chemistry and Physics 13/23, pp. 11935 - 11947. (DOI) (Web link)

  • Kaser, L.; Karl, T.; Schnitzhofer, R.; Graus, M.; Herdlinger-Blatt, I.S.; DiGangi, J.P.; Sive, B.; Turnipseed, A.; Hornbrook, R.S.; Zheng, W.; Flocke, F.M.; Guenther, A.; Keutsch, F.N.; Apel, E.; Hansel, A. (2013): Comparison of different real time VOC measurement techniques in a ponderosa pine forest.
    In: Atmospheric Chemistry and Physics 13/5, pp. 2896 - 2906. (DOI)

  • Kim, S.; Wolfe, G.M.; Mauldin, L.; Cantrell, C.; Guenther, A.; Karl, T.; Turnipseed, A.; Greenberg, J.; Hall, S.R.; Ullmann, K.; Apel, E.; Hornbrook, R.; Kajii, Y.; Nakashima, Y.; Keutsch, F.N.; DiGangi, J.P.; Henry, S.B.; Kaser, L.; Schnitzhofer, R.; Graus, M.; Hansel, A.; Zheng, W.; Flocke, F.F. (2013): Evaluation of HOx sources and cycling using measurement-constrained model calculations in a 2-methyl-3-butene-2-ol (MBO) and monoterpene (MT) dominated ecosystem.
    In: Atmospheric Chemistry and Physics 13, pp. 2031 - 2044. (DOI) (Web link)

  • Mak, J.E.; Su, L.; Guenther, A.; Karl, T. (2013): A novel Whole Air Sample Profiler (WASP) for the quantification of volatile organic compounds in the boundary layer.
    In: Atmospheric Measurement Techniques 6, pp. 2703 - 2712. (DOI) (Web link)

  • Unger, N.; Harper, K.; Zheng, Y.; Kiang, NY; Aleinov, I.; Arneth, A.; Schurgers, Guy; Amelynck, C.; Goldstein, A.; Guenther, A.; Heinesch, Bernard; Hewitt, CN; Karl, T.; Laffineur, Q.; Langford, B.; McKinney, KA; Misztal, P.; Potosnak, M.; Rinne, Janne; Pressley, S.; Schoon, N.; Serça, D. (2013): Photosynthesis-dependent isoprene emission from leaf to planet in a global carbon-chemistry-climate model.
    In: Atmospheric Chemistry and Physics 13/20, pp. 10243 - 10269. (DOI)

Journal Article (Review)
  • Giovannini, L.; Ferrero, E.; Karl, T.; Rotach, M. W.; Staquet, C.; Trini Castelli, S.; Zardi, D. (2020): Atmospheric Pollutant Dispersion over Complex Terrain: Challenges and Needs for Improving Air Quality Measurements and Modeling.
    In: Atmosphere 11/6, No. 646. (DOI) (Web link)

  • Fitzky, Anne Charlott; Sandén, Hans; Karl, Thomas; Fares, Silvano; Calfapietra, Carlo; Grote, Rüdiger; Saunier, Amélie; Rewald, Boris (2019): The Interplay Between Ozone and Urban Vegetation—BVOC Emissions, Ozone Deposition, and Tree Ecophysiology.
    In: Frontiers in Forests and Global Change 2, No. 50. (DOI) (Web link)

Journal Article (Proceedings Paper)
  • Winkler, Paul M.; Ortega, John; Karl, Thomas; McMurry, Peter H.; Smith, James N. (2013): A Fast-Scanning DMA Train for Precision Quantification of Early Nanoparticle Growth.
    In: AIP Conference Proceedings 1527, pp. 165 - 168. (DOI)

Journal Article (Meeting-Abstract)
  • Guenther, A; Gu, D; Yu, HF; Shilling, J; Shrivastava, M; Karl, T; Artaxo, P; Kaser, L; Santos, F; Longo, K; Martin, S; Yuan, B; Kim, S; Seco, R (2015): Quantifying regional OH concentrations using airborne measurements of isoprene and its oxidation products.
    In: Abstracts of Papers of the American Chemical Society 250, No. 119. (Web link)

  • Palm, B; Campuzano-Jost, P; Day, D; Hu, WW; Ortega, A; de Sa, S; Seco, R; Park, JH; Guenther, A; Kim, S; Brito, J; Wurm, F; Artaxo, P; Thalman, R; Wang, J; Kaser, L; Jud, W; Karl, T; Hansel, A; Fry, J; Brown, S; Draper, D; Zarzana, K; Dube, W; Wagner, N; Hacker, L; Kiendler-Scharr, A; Yee, L; Isaacman, G; Goldstein, A; Souza, R; Manzi, A; Vega, O; Tota, J; Newburn, M; Alexander, ML; Martin, S; Brune, W; Jimenez, J (2015): Measurements of in-situ SOA formation and chemistry using an oxidation flow reactor.
    In: Abstracts of Papers of the American Chemical Society 249, No. 516. (Web link)

  • Wohlfahrt, Georg; Amelynck, Christ; Ammann, Christof; Arneth, Almut; Bamberger, Ines; Goldstein, Allen; Hansel, Armin; Heinesch, Bernhard; Holst, Thomas; Hörtnagl, Lukas; Karl, Thomas; Neftel, Albrecht; McKinney, Karena; Munger, William; Schade, Gunnar; Schoon, Niels (2014): A bottom-up perspective of the net land methanol flux: synthesis of global
    eddy covariance flux measurements.
    In: Geophysical Research Abstracts. EGU General Assembly 16, p. 2959-1. (Web link)

Journal Article (Correction: Self-Correction)
  • Jiang, X.; Guenther, A.; Potosnak, Mark; Geron, C.; Seco, R.; Karl, Thomas; Kim, Saewung; Gu, Lianhong; Pallardy, Stephen (2018): Isoprene emission response to drought and the impact on global atmospheric chemistry (vol 183, pg 69, 2018).
    In: Atmospheric Environment 185, pp. 272 - 273. (DOI)

Proceedings Article (Full Paper)
  • Canaval, E.; Graus, M.; Fischer, L.; Herdlinger-Blatt, I. S.; Partoll, E.; Steiner, G.; Hainer, M.; Hausberger, L.; Schnitzhofer, R.; Karl, T.; Hansel, A. (2016): Environmental Science Integrated Into School.
    In: Hansel, Armin; Dunkl, Jürgen: 7th International Conference on Proton Transfer Reaction Mass Spectrometry and its Applications. Innsbruck: innsbruck university press (IUP)., ISBN 978-3-903122-00-0, pp. 173 - 176. (Web link)

  • Graus, M.; Striednig, M.; Karl, T. (2016): PTR-QiTOF Characterization and Eddy Covariance Measurements.
    In: Hansel, Armin; Dunkl, Jürgen: 7th International Conference on Proton Transfer Reaction Mass Spectrometry and its Applications. Innsbruck: innsbruck university press (IUP)., ISBN 978-3-903122-00-0, pp. 144 - 146. (Web link)

Proceedings Article (Abstract)
  • Kaser, L.; Karl, T.; Graus, M.; Schnitzhofer, R.; Turnipseed, A.; Guenther, A.; Hansel, A. (2013): Eddy Covariance Measurements by PTR-TOF-MS above a Ponderosa Pine Forest.
    In: Hansel, Armin; Dunkl, Jürgen: Contributions - 6th International Conference on Proton Transfer Reaction Mass Spectrometry and its Applications. Obergurgl, Austria, February 3rd - February 8th, 2013. Innsbruck: innsbruck university press (IUP) (= Conference Series)., ISBN 978-3-902811-91-2, pp. 187 - 189. (Web link)

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