Search Results - "HARLEY, P"

Estimates of global terrestrial isoprene emissions using MEGAN (Model of Emissions of Gases and Aerosols from Nature) by 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…”
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Estimations of isoprenoid emission capacity from enclosure studies: measurements, data processing, quality and standardized measurement protocols by Niinemets, Ü., Kuhn, U., Harley, P. C., Staudt, M., Arneth, A., Cescatti, A., Ciccioli, P., Copolovici, L., Geron, C., Guenther, A., Kesselmeier, J., Lerdau, M. T., Monson, R. K., Peñuelas, J.

“…The capacity for volatile isoprenoid production under standardized environmental conditions at a certain time (ES, the emission factor) is a key characteristic…”
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Efficient Atmospheric Cleansing of Oxidized Organic Trace Gases by Vegetation by Karl, T, Harley, P, Emmons, L, Thornton, B, Guenther, A, Basu, C, Turnipseed, A, Jardine, K

“…The biosphere is the major source and sink of nonmethane volatile organic compounds (VOCs) in the atmosphere. Gas-phase chemical reactions initiate the removal…”
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Effect of isoprene emissions from major forests on ozone formation in the city of Shanghai, China by Geng, F., Tie, X., Guenther, A., Li, G., Cao, J., Harley, P.

“…Ambient surface level concentrations of isoprene (C5H8) were measured in the major forest regions located south of Shanghai, China. Because there is a large…”
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Emissions and ambient distributions of Biogenic Volatile Organic Compounds (BVOC) in a ponderosa pine ecosystem: interpretation of PTR-MS mass spectra by Kim, S., Karl, T., Guenther, A., Tyndall, G., Orlando, J., Harley, P., Rasmussen, R., Apel, E.

“…Two proton-transfer-reaction mass spectrometry systems were deployed at the Bio-hydro-atmosphere interactions of Energy, Aerosols, Carbon, H2O, Organics and…”
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Undisturbed and disturbed above canopy ponderosa pine emissions: PTR-TOF-MS measurements and MEGAN 2.1 model results by 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

“…We present the first eddy covariance flux measurements of volatile organic compounds (VOCs) using a proton-transfer-reaction time-of-flight mass spectrometer…”
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Fiducial Marker Placement Using Endobronchial Ultrasound and Navigational Bronchoscopy for Stereotactic Radiosurgery: An Alternative Strategy by Harley, Daniel P., MD, Krimsky, William S., MD, Sarkar, Saiyad, MD, Highfield, David, PhD, Aygun, Cengis, MD, Gurses, Burak, MD

“…Background Stereotactic radiosurgery is being increasingly used to treat patients with early-stage non-small cell lung cancers (NSCLC) who are not candidates…”
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Temperature response of parameters of a biochemically based model of photosynthesis. II. A review of experimental data by Medlyn, B. E., Dreyer, E., Ellsworth, D., Forstreuter, M., Harley, P. C., Kirschbaum, M. U. F., Le Roux, X., Montpied, P., Strassemeyer, J., Walcroft, A., Wang, K., Loustau, D.

“…The temperature dependence of C3 photosynthesis is known to vary with growth environment and with species. In an attempt to quantify this variability, a…”
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Missing peroxy radical sources within a summertime ponderosa pine forest by 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

“…Organic peroxy (RO2) and hydroperoxy (HO2) radicals are key intermediates in the photochemical processes that generate ozone, secondary organic aerosol and…”
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First direct measurements of formaldehyde flux via eddy covariance: implications for missing in-canopy formaldehyde sources by DiGangi, J. P., Boyle, E. S., Karl, T., Harley, P., Turnipseed, A., Kim, S., Cantrell, C., Maudlin III, R. L., Zheng, W., Flocke, F., Hall, S. R., Ullmann, K., Nakashima, Y., Paul, J. B., Wolfe, G. M., Desai, A. R., Kajii, Y., Guenther, A., Keutsch, F. N.

“…We report the first observations of formaldehyde (HCHO) flux measured via eddy covariance, as well as HCHO concentrations and gradients, as observed by the…”
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Environmental controls over methanol emission from leaves by Harley, P., Greenberg, J., Niinemets, Ü., Guenther, A.

“…Methanol is found throughout the troposphere, with average concentrations second only to methane among atmospheric hydrocarbons. Proposed global methanol…”
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Carbon sequestration in a high-elevation, subalpine forest by Monson, R. K., Turnipseed, A. A., Sparks, J. P., Harley, P. C., Scott-Denton, L. E., Sparks, K., Huxman, T. E.

“…We studied net ecosystem CO2 exchange (NEE) dynamics in a high‐elevation, subalpine forest in Colorado, USA, over a two‐year period. Annual carbon…”
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Contribution from biogenic organic compounds to particle growth during the 2010 BEACHON-ROCS campaign in a Colorado temperate needleleaf forest by Zhou, L, Gierens, R, Sogachev, A, Mogensen, 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

“…New particle formation (NPF) is an important atmospheric phenomenon. During an NPF event, particles first form by nucleation and then grow further in size. The…”
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Temperature as a Control over Ecosystem CO₂ Fluxes in a High-Elevation, Subalpine Forest by Huxman, T. E., Turnipseed, A. A., J. P. Sparks, P. C. Harley, Monson, R. K.

“…We evaluated the hypothesis that CO₂ uptake by a subalpine, coniferous forest is limited by cool temperature during the growing season. Using the eddy…”
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Isoprene and monoterpene fluxes measured above Amazonian rainforest and their dependence on light and temperature by Rinne, H.J.I., Guenther, A.B., Greenberg, J.P., Harley, P.C.

“…Canopy scale emissions of isoprene and monoterpenes from Amazonian rainforest were measured by eddy covariance and eddy accumulation techniques. The peak…”
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Effect of drought on isoprene emission rates from leaves of Quercus virginiana Mill by Pegoraro, E., Rey, A., Greenberg, J., Harley, P., Grace, J., Malhi, Y., Guenther, A.

“…Leaf isoprene emission rates ( F iso) were studied in 2-year old trees of live oak ( Quercus virginiana Mill.) during two drying–rewatering cycles. During the…”
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model of isoprene emission based on energetic requirements for isoprene synthesis and leaf photosynthetic properties for Liquidambar and Quercus by Niinemets, U, Tenhunen, J.D, Harley, P.C, Steinbrecher, R

“…We present a physiological model of isoprene (2-methyl-1,3-butadiene) emission which considers the cost for isoprene synthesis, and the production of reductive…”
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Large estragole fluxes from oil palms in Borneo by Misztal, P. K., Owen, S. M., Guenther, A. B., Rasmussen, R., Geron, C., Harley, P., Phillips, G. J., Ryan, A., Edwards, D. P., Hewitt, C. N., Nemitz, E., Siong, J., Heal, M. R., Cape, J. N.

“…During two field campaigns (OP3 and ACES), which ran in Borneo in 2008, we measured large emissions of estragole (methyl chavicol; IUPAC systematic name…”
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The bi-directional exchange of oxygenated VOCs between a loblolly pine (Pinus taeda) plantation and the atmosphere by Karl, T., Harley, P., Guenther, A., Rasmussen, R., Baker, B., Jardine, K., Nemitz, E.

“…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…”
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Seasonal temperature variations influence isoprene emission by Pétron, G., Harley, P., Greenberg, J., Guenther, A.

“…Isoprene (2‐methyl‐1,3‐butadiene) emission from plants is highly temperature dependent. The influence of long‐term variations in growth temperature on isoprene…”
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