Emissions from biomass burning in the Yucatan (2009)
Yokelson, R. J., Crounse, J. D., DeCarlo, P. F., Karl, T., Urbanski, S., Atlas, E., ...
In March 2006 two instrumented aircraft made the first detailed field measurements of biomass burning (BB) emissions in the Northern Hemisphere tropics as part of the MILAGRO project. The aircraft...
T. Karl, E. Apel, A. Hodzic, D. D. Riemer, D. R. Blake, C. Wiedinmyer
Toluene and benzene are used for assessing the ability to measure disjunct eddy covariance (DEC) fluxes of Volatile Organic Compounds (VOC) using Proton Transfer Reaction Mass Spectrometry (PTR-MS)...
A. A. Turnipseed, S. N. Pressley, T. Karl, B. Lamb, E. Nemitz, E. Allwine, ...
The concept of disjunct eddy sampling (DES) for use in measuring ecosystem-level micrometeorological fluxes is re-examined. The governing equations are discussed as well as other practical...
Emissions from biomass burning in the Yucatan (2009)
R. Yokelson, J. D. Crounse, P. F. DeCarlo, T. Karl, S. Urbanski, E. Atlas, ...
In March 2006 two instrumented aircraft made the first detailed field measurements of biomass burning (BB) emissions in the Northern Hemisphere tropics as part of the MILAGRO project. The aircraft...
Rapid formation of isoprene photo-oxidation products observed in Amazonia (2009)
T. Karl, A. Guenther, A. Turnipseed, P. Artaxo, S. Martin
Isoprene represents the single most important reactive hydrocarbon for atmospheric chemistry in the tropical atmosphere. It plays a central role in global and regional atmospheric chemistry and...
Emissions from biomass burning in the Yucatan (2009)
R. J. Yokelson, J. D. Crounse, P. F. DeCarlo, T. Karl, S. Urbanski, E. Atlas, ...
In March 2006 two instrumented aircraft made the first detailed field measurements of biomass burning (BB) emissions in the Northern Hemisphere tropics as part of the MILAGRO project. The aircraft...
Rapid formation of isoprene photo-oxidation products observed in Amazonia (2009)
T. Karl, A. Guenther, A. Turnipseed, G. Tyndall, P. Artaxo, S. Martin
Isoprene represents the single most important reactive hydrocarbon for atmospheric chemistry in the tropical atmosphere. It plays a central role in global and regional atmospheric chemistry and...
S. Kim, T. Karl, A. Guenther, G. Tyndall, J. Orlando, P. Harley, ...
Two proton-transfer-reaction mass spectrometry systems were deployed at the Bio-hydro-atmosphere interactions of Energy, Aerosols, Carbon, H<sub>2</sub>O, Organics and Nitrogen-Southern...
New constraints on terrestrial and oceanic sources of atmospheric methanol (2008)
Millet, D. B., Jacob, D. J., Custer, T. G., De Gouw, J. A., Goldstein, A. H., Karl, T., ...
We use a global 3-D chemical transport model (GEOS-Chem) to interpret new aircraft, surface, and oceanic observations of methanol in terms of the constraints that they place on the atmospheric...
Chemical sensing of plant stress at the ecosystem scale (2008)
Karl, T., Guenther, A., Turnipseed, A., Patton, E. G., Jardine, K.
Significant ecosystem-scale emissions of methylsalicylate (MeSA), a semivolatile plant hormone thought to act as the mobile signal for systemic acquired resistance (SAR) (Park et al., 2006), were...
Peltier, R. E., Hecobian, A. H., Weber, R. J., Stohl, A., Atlas, E. L., Riemer, D. D., ...
During the National Aeronautics and Space Administration (NASA) Intercontinental Chemical Transport Experiment, Phase B (INTEX-B), in the spring of 2006, airborne measurements were made in the United...
New particle formation in the Front Range of the Colorado Rocky Mountains (2008)
Boy, M., Karl, T., Turnipseed, A., Mauldin, R. L., Kosciuch, E., Greenberg, J., ...
New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei....
New constraints on terrestrial and oceanic sources of atmospheric methanol (2008)
Millet, D. B., Jacob, D. J., Custer, T. G., De Gouw, J. A., Goldstein, A. H., Karl, T., ...
We use a global 3-D chemical transport model (GEOS-Chem) to interpret new aircraft, surface, and oceanic observations of methanol in terms of the constraints that they place on the atmospheric...
Chemical sensing of plant stress at the ecosystem scale (2008)
Karl, T., Guenther, A., Turnipseed, A., Patton, E. G., Jardine, K.
Significant ecosystem-scale emissions of methylsalicylate (MeSA), a semivolatile plant hormone thought to act as the mobile signal for systemic acquired resistance (SAR) (Park et al., 2006), were...
Peltier, R. E., Hecobian, A. H., Weber, R. J., Stohl, A., Atlas, E. L., Riemer, D. D., ...
During the National Aeronautics and Space Administration (NASA) Intercontinental Chemical Transport Experiment, Phase B (INTEX-B), in the spring of 2006, airborne measurements were made in the United...
New particle formation in the Front Range of the Colorado Rocky Mountains (2008)
Boy, M., Karl, T., Turnipseed, A., Mauldin, R. L., Kosciuch, E., Greenberg, J., ...
New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei....
New constraints on terrestrial and oceanic sources of atmospheric methanol (2008)
Millet, D. B., Jacob, D. J., Custer, T. G., De Gouw, J. A., Goldstein, A. H., Karl, T., ...
New particle formation in the Front Range of the Colorado Rocky Mountains (2008)
M. Boy, T. Karl, A. Turnipseed, R. L. Mauldin, E. Kosciuch, J. Greenberg, ...
New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei....
R. E. Peltier, A. H. Hecobian, R. J. Weber, A. Stohl, E. L. Atlas, D. D. Riemer, ...
During the National Aeronautics and Space Administration (NASA) Intercontinental Chemical Transport Experiment, Phase B (INTEX-B), in the spring of 2006, airborne measurements were made in the United...
New constraints on terrestrial and oceanic sources of atmospheric methanol (2008)
D. B. Millet, D. J. Jacob, T. G. Custer, A. H. Goldstein, T. Karl, ...
We use a global 3-D chemical transport model (GEOS-Chem) to interpret new aircraft, surface, and oceanic observations of methanol in terms of the constraints that they place on the atmospheric...
Chemical sensing of plant stress at the ecosystem scale (2008)
T. Karl, A. Guenther, A. Turnipseed, E. G. Patton, K. Jardine
Significant ecosystem-scale emissions of methylsalicylate (MeSA), a semivolatile plant hormone thought to act as the mobile signal for systemic acquired resistance (SAR), were observed in an...
K. Jardine, P. Harley, T. Karl, A. Guenther, M. Lerdau, J. E. Mak
We quantified fine scale sources and sinks of gas phase acetaldehyde in two forested ecosystems in the US. During the daytime, the upper canopy behaved as a net source while at lower heights, reduced...
Chemical sensing of plant stress at the ecosystem scale (2008)
T. Karl, A. Guenther, A. Turnipseed, E. G. Patton, K. Jardine
Significant ecosystem-scale emissions of methylsalicylate (MeSA), a semivolatile plant hormone thought to act as the mobile signal for systemic acquired resistance (SAR) (Park et al., 2006), were...
K. Jardine, P. Harley, T. Karl, A. Guenther, M. Lerdau, J. E. Mak
We quantified fine scale sources and sinks of gas phase acetaldehyde in two forested ecosystems in the US. During the daytime, the upper canopy behaved as a net source while at lower heights, reduced...
New constraints on terrestrial and oceanic sources of atmospheric methanol (2008)
D. B. Millet, D. J. Jacob, T. G. Custer, A. H. Goldstein, T. Karl, ...
We use a global 3-D chemical transport model (GEOS-Chem) to interpret new aircraft, surface, and oceanic observations of methanol in terms of the constraints that they place on the atmospheric...
A. A. Turnipseed, S. N. Pressley, T. Karl, B. Lamb, E. Nemitz, E. Allwine, ...
The concept of disjunct eddy sampling (DES) for use in measuring ecosystem-level micrometeorological fluxes is re-examined. The governing equations are discussed as well as other practical...
T. Karl, E. Apel, A. Hodzic, D. Riemer, D. Blake, C. Wiedinmyer
Toluene and benzene are used for assessing the ability to measure disjunct eddy covariance (DEC) fluxes of Volatile Organic Compounds (VOC) using Proton Transfer Reaction Mass Spectrometry (PTR-MS)...
A. Arneth, Ü. Niinemets, S. Pressley, J. Bäck, P. Hari, T. Karl, ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many – though not all – laboratory experiments indicate...
Peltier, R. E., Hecobian, A. H., Weber, R. J., Stohl, A., Atlas, E. L., Riemer, D. D., ...
During the National Aeronautics and Space Administration (NASA) Intercontinental Chemical Transport Experiment, Phase B (INTEX-B), in the spring of 2006, airborne measurements were made in the United...
New particle formation in the front range of the Colorado Rocky Mountains (2007)
Boy, M., Karl, T., Turnipseed, A., Mauldin, R. L., Kosciuch, E., Greenberg, J., ...
New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei....
Yokelson, R. J., Karl, T., Artaxo, P., Blake, D. R., Christian, T. J., Griffith, D. W. T., ...
The Tropical Forest and Fire Emissions Experiment (TROFFEE) used laboratory measurements followed by airborne and ground based field campaigns during the 2004 Amazon dry season to quantify the...
Yokelson, R. J., Karl, T., Artaxo, P., Blake, D. R., Christian, T. J., Griffith, D. W. T., ...
The Tropical Forest and Fire Emissions Experiment (TROFFEE) used laboratory measurements followed by airborne and ground based field campaigns during the 2004 Amazon dry season to quantify the...
Peltier, R. E., Hecobian, A. H., Weber, R. J., Stohl, A., Atlas, E. L., Riemer, D. D., ...
During the National Aeronautics and Space Administration (NASA) Intercontinental Chemical Transport Experiment, Phase B (INTEX-B), in the spring of 2006, airborne measurements were made in the United...
New particle formation in the front range of the Colorado Rocky Mountains (2007)
Boy, M., Karl, T., Turnipseed, A., Mauldin, R. L., Kosciuch, E., Greenberg, J., ...
New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei....
Yokelson, R. J., Karl, T., Artaxo, P., Blake, D. R., Christian, T. J., Griffith, D. W. T., ...
The Tropical Forest and Fire Emissions Experiment (TROFFEE) used laboratory measurements followed by airborne and ground based field campaigns during the 2004 Amazon dry season to quantify the...
Yokelson, R. J., Karl, T., Artaxo, P., Blake, D. R., Christian, T. J., Griffith, D. W. T., ...
The Tropical Forest and Fire Emissions Experiment (TROFFEE) used laboratory measurements followed by airborne and ground based field campaigns during the 2004 Amazon dry season to quantify the...
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many though not all laboratory experiments indicate that...
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many – though not all – laboratory experiments indicate that...
R. J. Yokelson, T. Karl, P. Artaxo, D. R. Blake, T. J. Christian, ...
The Tropical Forest and Fire Emissions Experiment (TROFFEE) used laboratory measurements followed by airborne and ground based field campaigns during the 2004 Amazon dry season to quantify the...
R. J. Yokelson, T. Karl, P. Artaxo, D. R. Blake, T. J. Christian, ...
The Tropical Forest and Fire Emissions Experiment (TROFFEE) used laboratory measurements followed by airborne and ground based field campaigns during the 2004 Amazon dry season to quantify the...
New particle formation in the front range of the Colorado Rocky Mountains (2007)
M. Boy, T. Karl, A. Turnipseed, R. L. Mauldin, E. Kosciuch, J. Greenberg, ...
New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei....
R. E. Peltier, A. H. Hecobian, R. J. Weber, A. Stohl, E. L. Atlas, D. D. Riemer, ...
During the National Aeronautics and Space Administration (NASA) Intercontinental Chemical Transport Experiment, Phase B (INTEX-B), in the spring of 2006, airborne measurements were made in the United...
Volatile organic emissions from the distillation and pyrolysis of vegetation (2006)
J. P. Greenberg, H. Friedli, A. B. Guenther, D. Hanson, P. Harley, T. Karl
Leaf and woody plant tissue (Pinus ponderosa, Eucalyptus saligna, Quercus gambelli, Saccharum officinarum and Oriza sativa) were heated from 30 to 300°C and volatile organic compound (VOC)...
A. Guenther, T. Karl, P. Harley, C. Wiedinmyer, P. I. Palmer, C. Geron
Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy fluxes are...
Guenther, A., Karl, T., Harley, P., Wiedinmyer, C., Palmer, P. I., Geron, C.
Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy fluxes are...
Guenther, A., Karl, T., Harley, P., Wiedinmyer, C., Palmer, P. I., Geron, C.
Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy fluxes are...
Volatile organic emissions from the distillation and pyrolysis of vegetation (2006)
Greenberg, J. P., Friedli, H., Guenther, A. B., Hanson, D., Harley, P., Karl, T.
Leaf and woody plant tissue (Pinus ponderosa, Eucalyptus saligna, Quercus gambelli, Saccharum officinarum and Oriza sativa) were heated from 30 to 300°C and volatile organic compound (VOC) emissions...
Guenther, A., Karl, T., Harley, P., Wiedinmyer, C., Palmer, P. I., Geron, C.
Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy fluxes are...
Guenther, A., Karl, T., Harley, P., Wiedinmyer, C., Palmer, P. I., Geron, C.
Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy fluxes are...
Volatile organic emissions from the distillation and pyrolysis of vegetation (2006)
Greenberg, J. P., Friedli, H., Guenther, A. B., Hanson, D., Harley, P., Karl, T.
Leaf and woody plant tissue (Pinus ponderosa, Eucalyptus saligna, Quercus gambelli, Saccharum officinarum and Oriza sativa) were heated from 30 to 300°C and volatile organic compound (VOC) emissions...
Process-based estimates of terrestrial ecosystem isoprene emissions (2006)
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many though not all laboratory experiments indicate that...
Process-based estimates of terrestrial ecosystem isoprene emissions (2006)
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many – though not all – laboratory experiments indicate that...
A. Guenther, T. Karl, P. Harley, C. Wiedinmyer, P. I. Palmer, C. Geron
Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy fluxes are...
T. Karl, P. Harley, A. Guenther, R. Rasmussen, B. Baker, K. Jardine, ...
Using new in-situ field observations of the most abundant oxygenated VOCs (methanol, acetaldehyde, acetone, C3/C4 carbonyls, MVK+MAC and acetic acid) we were able to constrain emission and deposition...
Isoprene oxidation products are a significant atmospheric aerosol component (2005)
Matsunaga, S. N., Wiedinmyer, C., Guenther, A. B., Orlando, J. J., Karl, T., Toohey, D. W., ...
Glycolaldehyde, hydroxyacetone, and methylglyoxal, which are known isoprene oxidation products, were collected during two field experiments using an annular denuder sampling system and compared to a...
Volatile organic emissions from the distillation and pyrolysis of vegetation (2005)
Greenberg, J. P., Friedli, H., Guenther, A. B., Hanson, D., Harley, P., Karl, T.
Leaf and woody plant tissue (Pinus ponderosa, Eucalyptus saligna, Quercus gambelli, Saccharum officinarum and Oriza sativa) were heated from 30 to 300°C and volatile organic compound (VOC) emissions...
Karl, T., Harley, P., Baker, B., Jardine, K., Nemitz, E., Guenther, A.
Using new in-situ field observations of the most abundant oxygenated VOCs (methanol, acetaldehyde, acetone, C3/C4 carbonyls, MVK+MAC and acetic acid) we were able to constrain emission and deposition...
Karl, T., Harley, P., Guenther, A., Rasmussen, R., Baker, B., Jardine, K., ...
Using new in-situ field observations of the most abundant oxygenated VOCs (methanol, acetaldehyde, acetone, C3/C4 carbonyls, MVK+MAC and acetic acid) we were able to constrain emission and deposition...
Isoprene oxidation products are a significant atmospheric aerosol component (2005)
Matsunaga, S. N., Wiedinmyer, C., Guenther, A. B., Orlando, J. J., Karl, T., Toohey, D. W., ...
Glycolaldehyde, hydroxyacetone, and methylglyoxal, which are known isoprene oxidation products, were collected during two field experiments using an annular denuder sampling system and compared to a...
Volatile organic emissions from the distillation and pyrolysis of vegetation (2005)
Greenberg, J. P., Friedli, H., Guenther, A. B., Hanson, D., Harley, P., Karl, T.
Leaf and woody plant tissue (Pinus ponderosa, Eucalyptus saligna, Quercus gambelli, Saccharum officinarum and Oriza sativa) were heated from 30 to 300°C and volatile organic compound (VOC) emissions...
Karl, T., Harley, P., Baker, B., Jardine, K., Nemitz, E., Guenther, A.
Using new in-situ field observations of the most abundant oxygenated VOCs (methanol, acetaldehyde, acetone, C3/C4 carbonyls, MVK+MAC and acetic acid) we were able to constrain emission and deposition...
Karl, T., Harley, P., Guenther, A., Rasmussen, R., Baker, B., Jardine, K., ...
Using new in-situ field observations of the most abundant oxygenated VOCs (methanol, acetaldehyde, acetone, C3/C4 carbonyls, MVK+MAC and acetic acid) we were able to constrain emission and deposition...
Isoprene oxidation products are a significant atmospheric aerosol component (2005)
S. N. Matsunaga, C. Wiedinmyer, A. B. Guenther, J. J. Orlando, T. Karl, D. W. Toohey, ...
Glycolaldehyde, hydroxyacetone, and methylglyoxal, which are known isoprene oxidation products, were collected during two field experiments using an annular denuder sampling system and compared to a...
Pachler,K., Karl,T., Kolmann,K., Mehlmer,N., Eder,M., Loeffler,M., ...
Technical summary of working group 1. (2001)
Albritton,D. L., Meira Filho,L. G., Cubasch,U., Dai,X., Ding,Y., Griggs,D. J., ...
Technical summary of working group 1. (2001)
Houghton, J. T., Albritton, D. L., Meira Filho, L. G., Cubasch, U., Dai, X., Ding, Y., ...
Summary for Policymakers. (2001)
Houghton, J. T., Albritton, D. L., Allen, M. R., Baede, A. P. M., Church, J. A., Cubasch, U., ...
High concentrations of reactive biogenic VOCs at a high altitude site in late autumn. (2001)
Karl, T., Fall, R., Crutzen, P. J., Jordan, A., Lindinger, W.
Karl, T, Wensley, D, Stark, J, De Leval, M, Rees, P, Taylor, J F
The diagnostic and prognostic features of 44 episodes of infective endocarditis in 42 children with congenital heart disease were reviewed. Endocarditis occurred in 18 patients who had not had...