The Influence of Light and Temperature on Isoprene Emission Rates from Live Oak

Tingey, David T.; Manning, Marybeth; Grothaus, Louis C.; Burns, Walter F.

doi:10.1111/j.1399-3054.1979.tb03200.x

Cited by 245 publications

(169 citation statements)

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“…Most past studies have focused on determinants of the instantaneous emission rate. The primary environmental controls over the instantaneous rate are light and temperature (Tingey et al 1979(Tingey et al , 1987Monson and Fall 1989;Loreto and Sharkey 1990). Control by light may explain the often-reported linkage between isoprene emission rate and the instantaneous photosynthesis rate (Sanadze 1969;Rasmussen and Jones 1973;Tingey et al 1987;Monson and Fall 1989;Sharkey 1990, 1993a;Monson et al 1991b).…”

Section: Introductionmentioning

confidence: 99%

Environmental and developmental controls over the seasonal pattern of isoprene emission from aspen leaves

et al. 1994

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emergence. Leaves that emerged in July and developed in hot, midsummer temperatures emitted isoprene within 6 days. Leaves that had emerged during the cool spring, and had grown for several weeks without emitting isoprene, could be induced to emit isoprene within 2 h of exposure to 32°C. Continued exposure to warm temperatures resulted in a progressive increase in the isoprene emission rate. Thus, temperature appears to be an important determinant of the early season induction of isoprene emission. The seasonal pattern of isoprene emission was examined in trees growing along an elevational gradient in the Colorado Front Range (1829-2896 m). Trees at different elevations exhibited staggered patterns of bud-break and initiation of photosynthesis and isoprene emission in concert with the staggered onset of warm, springtime temperatures. The springtime induction of isoprene emission could be predicted at each of the three sites as the time after bud break required for cumulative temperatures above 0°C to reach approximately 400 degree days. Seasonal temperature acclimation of isoprene emission rate and photosynthesis rate was not observed. The temperature dependence of isoprene emission rate between 20 and 35°C could be accurately predicted during spring and summer using a single algorithm that describes the Arrhenius relationship of enzyme activity. From these results, it is concluded that the early season pattern of isoprene emission is controlled by prevailing temperature and its interaction with developmental processes. The late-season pattern is determined by controls over leaf nitrogen concentration, especially the depletion of leaf nitrogen during senescence. Following early-season induction, isoprene emission rates correlate with photosynthesis rates. During the season there is little acclimation to temperature, so that seasonal modeling simplifies to a single temperature-response algorithm.

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Section: Introductionmentioning

confidence: 99%

Environmental and developmental controls over the seasonal pattern of isoprene emission from aspen leaves

et al. 1994

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“…In comparison with OH radical reaction (CH 3 Table 3 show that ethyl nitrite photodecomposition, reaction (36), oxidation of MTA, reaction (20), and OH/NO chemistry, reactions (4) and (5), are strongly coupled and are the most influential reaction sequence in the mechanism. Thus, a small deviation in k 20 or j 36 should largely affect the simulation results.…”

Section: Resultsmentioning

confidence: 99%

“…Rate Constants at 298 K Units of molecule, cm 3 with similar compounds 35 when there was no available information. As photochemical reaction rates are dependent on the experimental conditions and were not reported by Tuazon and Atkinson 26 they were estimated on the basis of the methacrolein photooxidation experimental data 26 .…”

Section: Reactionsmentioning

confidence: 99%

“…In this study the products of MTA oxidation were measured and identified, obtaining directly quantitative yields for hydroxyacetone (HOCH 2 C(O)CH 3 ) , methylglyoxal (CH 3 COCHO), formaldehyde (HCHO) and peroxymethacryloyl nitrate (hereafter PMN, CH 2 =C(CH 3 )C(O)OONO 2 ). The authors have also discussed and recommended a mechanism to represent the MTA + OH chemistry.…”

Section: Introductionmentioning

confidence: 99%

“…It is produced in a significant yield from the gas-phase reactions of isoprene, a vegetative emission [1][2][3][4][5][6] , with OH radical in the presence of NO x 7-10 and O 3 11-12 . Since the emissions of isoprene may dominate over anthropogenic nonmethane emissions on regional and global scales [13][14][15] , a knowledge of the atmospheric chemistry of methacrolein is a necessary input into the chemical mechanism for the atmospheric photooxidation of isoprene for use in airshed computers models [16][17] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kinetic analysis of the gas-phase reactions of methacrolein with the OH radical in the presence of NOx

Pimentel¹,

Arbilla²

1999

J. Braz. Chem. Soc.

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Um mecanismo explícito para a reação da metacroleína (MTA) com radicais OH, numa mistura NOx -ar, foi simulado resolvendo as equações diferenciais ordinárias usando o método RungeKutta-4-semi-implícito. Os resultados simulados são consistentes com os dados experimentais publicados e o modelo explica as principais vias de reação para a oxidação da MTA com radicais OH na presença de NOx -ar. Usando uma análise dos autovetores e autovalores dos coeficientes de sensibilidade, para todas as espécies químicas envolvidas em diferentes tempos de reação, foi extraída informação cinética do sistema. Este método foi utilizado para reduzir o modelo cinético de forma objetiva. Foi utilizado, também, o método tradicional de análise de velocidade de produção (ROPA) para estudar a importância relativa das reações individuais. Usando a informação da análise de componente principal e da análise de velocidade de produção, foram identificadas as principais reações individuais.An explicit chemical mechanism for the reaction of methacrolein (MTA) with OH radicals in NOx-air systems, was simulated by solving the corresponding ordinary differential equations using Runge-Kutta-4-semi-implicit method. The simulated results are consistent with the published experimental data and the model accounts for all the major pathways by which MTA reacts in NOx-air systems. An eigenvalue-eigenvector analysis is used to extract meaningful kinetic information from linear sensitivity coefficients computed for all species of the chemical mechanism at several time points. This method is used to get an objective condition for constructing a minimal reaction set. Also, a classic method called rate of production analysis (ROPA) was used for the study of the reactions relevance. Using the principal component information as well as the rate of production analysis the main paths of reaction are identified and discussed.

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Product formation from the reaction of the NO3 radical with isoprene and rate constants for the reactions of methacrolein and methyl vinyl ketone with the NO3 radical

Kwok

Aschmann

Arey

et al. 1996

Int. J. Chem. Kinet.

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The Influence of Light and Temperature on Isoprene Emission Rates from Live Oak

Cited by 245 publications

References 10 publications

Environmental and developmental controls over the seasonal pattern of isoprene emission from aspen leaves

Environmental and developmental controls over the seasonal pattern of isoprene emission from aspen leaves

Kinetic analysis of the gas-phase reactions of methacrolein with the OH radical in the presence of NOx

Product formation from the reaction of the NO3 radical with isoprene and rate constants for the reactions of methacrolein and methyl vinyl ketone with the NO3 radical

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