Thomas Karl, Dr. DI
Research Unit
Position
- Deputy Head of Institute
- Full Professor
Phone:
+43 512 507 / 54455
Room
60830
Personal Homepage:
Research Interests
Physical, Environmental and Atmospheric Sciences
Biosphere-Atmosphere Interactions
Atmospheric Chemistry
Air Quality
Micrometeorology
Biogeochemistry
Chemical Ionization Mass Spectrometry (CIMS)
PI
Publications
2018
, 2018: Urban flux measurements reveal a large pool of oxygenated volatile organic compound emissions. Proceedings of the National Academy of Sciences, 31, 201714715, doi:10.1073/pnas.1714715115. http://www.pnas.org/lookup/doi/10.1073/pnas.1714715115.
2017
, 2017: Airborne measurements of isoprene and monoterpene emissions from southeastern U.S. forests. Science of The Total Environment, 595, 149 - 158, doi:10.1016/j.scitotenv.2017.03.262. http://api.elsevier.com/content/article/PII:S0048969717307933?httpAccept=text/xml.
, 2017: Comprehensive characterization of atmospheric organic carbon at a forested site. Nature Geoscience, 91, doi:10.1038/ngeo3018. http://www.nature.com/doifinder/10.1038/ngeo3018.
, 2017: Drought impacts on photosynthesis, isoprene emission and atmospheric formaldehyde in a mid-latitude forest. Atmospheric Environment, 167, 190 - 201, doi:10.1016/j.atmosenv.2017.08.017. http://api.elsevier.com/content/article/PII:S1352231017305228?httpAccept=text/plain.
, 2017: Secondary organic aerosol formation from in situ OH, O3, and NO3 oxidation of ambient forest air in an oxidation flow reactor. Atmospheric Chemistry and Physics, 17, 5331 - 5354, doi:10.5194/acp-17-5331-201710.5194/acp-17-5331-2017-supplement. https://www.atmos-chem-phys.net/17/5331/2017/acp-17-5331-2017-supplement.pdf.
, 2017: Springtime ecosystem-scale monoterpene fluxes from Mediterranean pine forests across a precipitation gradient. Agricultural and Forest Meteorology, 237-238, 150 - 159, doi:10.1016/j.agrformet.2017.02.007. http://www.sciencedirect.com/science/article/pii/S0048969717307933.
, 2017: Urban eddy covariance measurements reveal significant missing NOx emissions in Central Europe. Scientific Reports, 7, doi:10.1038/s41598-017-02699-9. http://www.nature.com/articles/s41598-017-02699-9.
, 2017: VOC emission rates over London and South East England obtained by airborne eddy covariance. Faraday Discussions, 200, 599 - 620, doi:10.1039/C7FD00002B. http://pubs.rsc.org/en/content/articlepdf/2017/FD/C7FD00002B.
2016
, 2016: Evaluation of regional isoprene emission factors and modeled fluxes in California. Atmospheric Chemistry and Physics, 16, 9611 - 9628, doi:10.5194/acp-16-9611-201610.5194/acp-16-9611-2016-supplement. http://www.atmos-chem-phys.net/16/9611/2016/http://www.atmos-chem-phys.net/16/9611/2016/acp-16-9611-2016.pdfhttp://www.atmos-chem-phys.net/16/9611/2016/acp-16-9611-2016-supplement.pdf.
, 2016: In situ secondary organic aerosol formation from ambient pine forest air using an oxidation flow reactor. Atmospheric Chemistry and Physics, 16, 2943 - 2970, doi:10.5194/acp-16-2943-201610.5194/acp-16-2943-2016-supplement. http://www.atmos-chem-phys.net/16/2943/2016/http://www.atmos-chem-phys.net/16/2943/2016/acp-16-2943-2016.pdfhttp://www.atmos-chem-phys.net/16/2943/2016/acp-16-2943-2016-supplement.pdf.
, 2016: Large drought-induced variations in oak leaf volatile organic compound emissions during PINOT NOIR 2012. Chemosphere, 146, 8 - 21, doi:10.1016/j.chemosphere.2015.11.086. http://www.sciencedirect.com/science/article/pii/S0045653515304173.
, 2016: A new paradigm of quantifying ecosystem stress through chemical signatures. Ecosphere, 7, e01559, doi:10.1002/ecs2.1559. http://doi.wiley.com/10.1002/ecs2.1559.
, 2016: Rapid cycling of reactive nitrogen in the marine boundary layer. Nature, 532, 489 - 491, doi:10.1038/nature17195. http://www.nature.com/doifinder/10.1038/nature17195.
, 2016: Seasonality of isoprenoid emissions from a primary rainforest in central Amazonia. Atmospheric Chemistry and Physics, 16, 3903 - 3925, doi:10.5194/acp-16-3903-2016. http://www.atmos-chem-phys.net/16/3903/2016/http://www.atmos-chem-phys.net/16/3903/2016/acp-16-3903-2016.pdf.
, 2016: Simple, stable, and affordable: Towards long-term ecosystem scale flux measurements of VOCs. Atmospheric Environment, 131, 225 - 227, doi:10.1016/j.atmosenv.2016.02.005. http://linkinghub.elsevier.com/retrieve/pii/S1352231016301108.
, 2016: Spatially resolved flux measurements of NO x from London suggest significantly higher emissions than predicted by inventories. Faraday Discuss., 189, 455 - 472, doi:10.1039/C5FD00170F. http://xlink.rsc.org/?DOI=C5FD00170F.
, 2016: Speciated measurements of semivolatile and intermediate volatility organic compounds (S/IVOCs) in a pine forest during BEACHON-RoMBAS 2011. Atmospheric Chemistry and Physics, 16, 1187 - 1205, doi:10.5194/acp-16-1187-201610.5194/acp-16-1187-2016-supplement. http://www.atmos-chem-phys.net/16/1187/2016/.
2015
, 2015: Airborne flux measurements of methane and volatile organic compounds over the Haynesville and Marcellus shale gas production regions. Journal of Geophysical Research: Atmospheres, 120, 6271 - 6289, doi:10.1002/2015JD023242. http://doi.wiley.com/10.1002/2015JD023242.
, 2015: Atmospheric benzenoid emissions from plants rival those from fossil fuels. Scientific Reports, 5, 12064, doi:10.1038/srep12064. http://www.nature.com/doifinder/10.1038/srep12064.
, 2015: Characterization of a real-time tracer for isoprene epoxydiols-derived secondary organic aerosol (IEPOX-SOA) from aerosol mass spectrometer measurements. Atmospheric Chemistry and Physics, 15, 11807 - 11833, doi:10.5194/acp-15-11807-201510.5194/acp-15-11807-2015-supplement. http://www.atmos-chem-phys.net/15/11807/2015/http://www.atmos-chem-phys.net/15/11807/2015/acp-15-11807-2015.pdfhttp://www.atmos-chem-phys.net/15/11807/2015/acp-15-11807-2015-supplement.pdf.
, 2015: Chemistry-turbulence interactions and mesoscale variability influence the cleansing efficiency of the atmosphere. Geophysical Research Letters, 42, 10,894 - 10,903, doi:10.1002/grl.v42.2410.1002/2015GL066641. http://doi.wiley.com/10.1002/grl.v42.24.
, 2015: Contribution from biogenic organic compounds to particle growth during the 2010 BEACHON-ROCS campaign in a Colorado temperate needleleaf forest. Atmospheric Chemistry and Physics, 15, 8643 - 8656, doi:10.5194/acp-15-8643-2015. http://www.atmos-chem-phys.net/15/8643/2015/http://www.atmos-chem-phys.net/15/8643/2015/acp-15-8643-2015.pdf.
, 2015: An ecosystem-scale perspective of the net land methanol flux: synthesis of micrometeorological flux measurements. Atmospheric Chemistry and Physics, 15, 7413 - 7427, doi:10.5194/acp-15-7413-201510.5194/acp-15-7413-2015-supplement. http://www.atmos-chem-phys.net/15/7413/2015/http://www.atmos-chem-phys.net/15/7413/2015/acp-15-7413-2015.pdfhttp://www.atmos-chem-phys.net/15/7413/2015/acp-15-7413-2015-supplement.pdf.
, 2015: Ecosystem-scale volatile organic compound fluxes during an extreme drought in a broadleaf temperate forest of the Missouri Ozarks (central USA). Global Change Biology, 21, 3657 - 3674, doi:10.1111/gcb.12980. http://doi.wiley.com/10.1111/gcb.12980http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12980.
, 2015: Instrument intercomparison of glyoxal, methyl glyoxal and NO2 under simulated atmospheric conditions. Atmospheric Measurement Techniques, 8, 1835 - 1862, doi:10.5194/amt-8-1835-201510.5194/amt-8-1835-2015-supplement. http://www.atmos-meas-tech.net/8/1835/2015/http://www.atmos-meas-tech.net/8/1835/2015/amt-8-1835-2015.pdfhttp://www.atmos-meas-tech.net/8/1835/2015/amt-8-1835-2015-supplement.pdf.
, 2015: Quantifying sources and sinks of reactive gases in the lower atmosphere using airborne flux observations. Geophysical Research Letters, 42, 8231 - 8240, doi:10.1002/2015GL065839. http://doi.wiley.com/10.1002/2015GL065839http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2015GL065839.
, 2015: Submicron particle mass concentrations and sources in the Amazonian wet season (AMAZE-08). Atmospheric Chemistry and Physics, 15, 3687 - 3701, doi:10.5194/acp-15-3687-201510.5194/acp-15-3687-2015-supplement. http://www.atmos-chem-phys.net/15/3687/2015/http://www.atmos-chem-phys.net/15/3687/2015/acp-15-3687-2015.pdfhttp://www.atmos-chem-phys.net/15/3687/2015/acp-15-3687-2015-supplement.pdf.
2014
, 2014: Airborne flux measurements of biogenic isoprene over California. Atmospheric Chemistry and Physics, 14, 10631 - 10647, doi:10.5194/acp-14-10631-201410.5194/acp-14-10631-2014-supplement. http://www.atmos-chem-phys.net/14/10631/2014/http://www.atmos-chem-phys.net/14/10631/2014/acp-14-10631-2014.pdfhttp://www.atmos-chem-phys.net/14/10631/2014/acp-14-10631-2014-supplement.zip.
, 2014: Eddy covariance measurements of isoprene and 232-MBO based on NO+ time-of-flight mass spectrometry. International Journal of Mass Spectrometry, 365-366, 15 - 19, doi:10.1016/j.ijms.2013.12.002. http://linkinghub.elsevier.com/retrieve/pii/S1387380613004272.
, 2014: Missing peroxy radical sources within a summertime ponderosa pine forest. Atmospheric Chemistry and Physics, 14, 4715 - 4732, doi:10.5194/acp-14-4715-201410.5194/acp-14-4715-2014-supplement. http://www.atmos-chem-phys.net/14/4715/2014/http://www.atmos-chem-phys.net/14/4715/2014/acp-14-4715-2014.pdfhttp://www.atmos-chem-phys.net/14/4715/2014/acp-14-4715-2014-supplement.pdf.
, 2014: New Particle Formation and Growth in an Isoprene-Dominated Ozark Forest: From Sub-5 nm to CCN-Active Sizes. Aerosol Science and Technology, 48, 1285 - 1298, doi:10.1080/02786826.2014.984801. http://www.tandfonline.com/doi/full/10.1080/02786826.2014.984801.
, 2014: Observed and modeled ecosystem isoprene fluxes from an oak-dominated temperate forest and the influence of drought stress. Atmospheric Environment, 84, 314 - 322, doi:10.1016/j.atmosenv.2013.11.055. http://www.sciencedirect.com/science/article/pii/S1352231013009059.
, 2014: Overview of the Manitou Experimental Forest Observatory: site description and selected science results from 2008 to 2013. Atmospheric Chemistry and Physics, 14, 6345 - 6367, doi:10.5194/acp-14-6345-201410.5194/acp-14-6345-2014-supplement. http://www.atmos-chem-phys.net/14/6345/2014/http://www.atmos-chem-phys.net/14/6345/2014/acp-14-6345-2014.pdfhttp://www.atmos-chem-phys.net/14/6345/2014/acp-14-6345-2014-supplement.pdf.
, 2014: Total OH reactivity measurements in ambient air in a southern Rocky mountain ponderosa pine forest during BEACHON-SRM08 summer campaign. Atmospheric Environment, 85, 1 - 8, doi:10.1016/j.atmosenv.2013.11.042. http://linkinghub.elsevier.com/retrieve/pii/S1352231013008844.
2013
, 2013: Airborne Flux Measurements of BVOCs above Californian Oak Forests: Experimental Investigation of Surface and Entrainment Fluxes, OH Densities, and Damköhler Numbers. Journal of the Atmospheric Sciences, 70, 3277 - 3287, doi:10.1175/JAS-D-13-054.1. http://journals.ametsoc.org/doi/abs/10.1175/JAS-D-13-054.1.
, 2013: Comparison of different real time VOC measurement techniques in a ponderosa pine forest. Atmospheric Chemistry and Physics, 13, 2896 - 2906, doi:10.5194/acp-13-2893-2013.
, 2013: Emissions of putative isoprene oxidation products from mango branches under abiotic stress. JOURNAL OF EXPERIMENTAL BOTANY, 64, 3669 - 3679, doi:10.1093/jxb/ert202. http://jxb.oxfordjournals.org/lookup/doi/10.1093/jxb/ert202.
, 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. Atmospheric Chemistry and Physics, 13, 2031 - 2044, doi:10.5194/acp-13-2031-2013. http://www.atmos-chem-phys.net/13/2031/2013/acp-13-2031-2013.pdf.
, 2013: A Fast-Scanning DMA Train for Precision Quantification of Early Nanoparticle Growth. AIP Conference Proceedings, 1527, 165 - 168, doi:10.1063/1.4803229.
, 2013: Limited influence of dry deposition of semivolatile organic vapors on secondary organic aerosol formation in the urban plume. Geophysical Research Letters, 40, 3302 - 3307, doi:10.1002/grl.50611. http://doi.wiley.com/10.1002/grl.50611http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgrl.50611.
, 2013: A novel Whole Air Sample Profiler (WASP) for the quantification of volatile organic compounds in the boundary layer. Atmospheric Measurement Techniques, 6, 2703 - 2712, doi:10.5194/amt-6-2703-2013. http://www.atmos-meas-tech.net/6/2703/2013/amt-6-2703-2013.html.
, 2013: Observations of gas- and aerosol-phase organic nitrates at BEACHON-RoMBAS 2011. Atmospheric Chemistry and Physics, 13, 8585 - 8605, doi:10.5194/acp-13-8585-2013. http://www.atmos-chem-phys.net/13/8585/2013/http://www.atmos-chem-phys.net/13/8585/2013/acp-13-8585-2013.pdf.
, 2013: Photosynthesis-dependent isoprene emission from leaf to planet in a global carbon-chemistry-climate model. Atmospheric Chemistry and Physics, 13, 10243 - 10269, doi:10.5194/acp-13-10243-2013. http://www.atmos-chem-phys.net/13/10243/2013/http://www.atmos-chem-phys.net/13/10243/2013/acp-13-10243-2013.pdf.
, 2013: Undisturbed and disturbed above canopy ponderosa pine emissions: PTR-TOF-MS measurements and MEGAN 2.1 model results. Atmospheric Chemistry and Physics, 13, 11935 - 11947, doi:10.5194/acp-13-11935-2013. http://www.atmos-chem-phys.net/13/11935/2013/http://www.atmos-chem-phys.net/13/11935/2013/acp-13-11935-2013.pdf.
2012
, 2012: Airborne observations of methane emissions from rice cultivation in the Sacramento Valley of California. Journal of Geophysical Research: Atmospheres, 117, n/a - n/a, doi:10.1029/2012JD017994. http://doi.wiley.com/10.1029/2012JD017994http://www.agu.org/journals/jd/jd1223/2012JD017994/2012JD017994.pdf.
, 2012: Contribution of leaf and needle litter to whole ecosystem BVOC fluxes. Atmospheric Environment, 59, 302 - 311, doi:10.1016/j.atmosenv.2012.04.038. http://linkinghub.elsevier.com/retrieve/pii/S1352231012003688.
, 2012: Evaluation and improvements of two community models in simulating dry deposition velocities for peroxyacetyl nitrate (PAN) over a coniferous forest. Journal of Geophysical Research, 117, doi:10.1029/2011JD016751. http://doi.wiley.com/10.1029/2011JD016751http://www.agu.org/journals/jd/jd1204/2011JD016751/2011JD016751.pdf.
, 2012: Identification of the biogenic compounds responsible for size-dependent nanoparticle growth. Geophysical Research Letters, 39, n/a - n/a, doi:10.1029/2012GL053253. http://doi.wiley.com/10.1029/2012GL053253http://www.agu.org/journals/gl/gl1220/2012GL053253/2012GL053253.pdf.
, 2012: Observations of glyoxal and formaldehyde as metrics for the anthropogenic impact on rural photochemistry. Atmospheric Chemistry and Physics, 12, 9529 - 9543, doi:10.5194/acp-12-9529-201210.5194/acp-12-9529-2012-supplement. http://www.atmos-chem-phys.net/12/9529/2012/http://www.atmos-chem-phys.net/12/9529/2012/acp-12-9529-2012.pdfhttp://www.atmos-chem-phys.net/12/9529/2012/acp-12-9529-2012-supplement.pdf.
, 2012: On Quantitative Determination of Volatile Organic Compound Concentrations Using Proton Transfer Reaction Time-of-Flight Mass Spectrometry. Environmental Science & Technology, 46, 2283 - 2290, doi:10.1021/es203985t. http://pubs.acs.org/doi/abs/10.1021/es203985t.
, 2012: Selective measurements of isoprene and 2-methyl-3-buten-2-ol based on NO+ ionization mass spectrometry. Atmospheric Chemistry and Physics, 12, 11877 - 11884, doi:10.5194/acp-12-11877-2012. http://www.atmos-chem-phys.net/12/11877/2012/http://www.atmos-chem-phys.net/12/11877/2012/acp-12-11877-2012.pdf.
, 2012: Within-plant isoprene oxidation confirmed by direct emissions of oxidation products methyl vinyl ketone and methacrolein. Global Change Biology, 18, 973 - 984, doi:10.1111/j.1365-2486.2011.02610.x. http://doi.wiley.com/10.1111/j.1365-2486.2011.02610.x.