Zobrazeno 1 - 10 of 14 pro vyhledávání: '"Javier Alejandro Barrera"'
1
Atmospheric chemistry of 3-methoxy-1-propanol and 3-methoxy-1-butanol: Kinetics with OH radicals and Cl atoms, identification of the end-products in the presence of NO, mechanisms and atmospheric implications
Autor: María de los A. Garavagno, Raúl A. Taccone, Pablo R. Dalmasso, Javier Alejandro Barrera
Publikováno v: Atmospheric Environment. 202:28-40
The rate coefficients for the reactions of OH radicals and Cl atoms with 3-methoxy-1-propanol (3-M-1-POL) and 3-methoxy-1-butanol (3-M-1-BOL) in the gas-phase have been measured at (298 ± 2) K and atmospheric pressure. A conventional relative-rate t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f96ae8cb57710cfb6a3f1383edf31a18
https://doi.org/10.1016/j.atmosenv.2018.12.056
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3
Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60◦ N and 60◦ S during the 21st century
Autor: Carlos A. Cuevas, Fernando Iglesias-Suarez, Jean-Francois Lamarque, Alfonso Saiz-Lopez, Javier Alejandro Barrera, Rafael P. Fernandez
Biogenic very short-lived bromocarbons (VSL Br ) currently represent ∼25 % of the total stratospheric bromine loading. Owing to their much shorter lifetime compared to anthropogenic long-lived bromine (e.g. halons) and chlorine (e.g. chlorofluoroca
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7455eb90f1c23a5577a74635fe21806e
https://doi.org/10.5194/egusphere-egu21-14360
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4
Evaluation of CAM-Chem VSLBr model performance during SouthTRAC campaign
Autor: Rafael P. Fernandez, Alfonso Saiz-Lopez, Enrique Puliafito, Lucas Berná, Andreas Engel, Javier Alejandro Barrera, Ana I. López-Noreña, Markus Jesswein, Carlos A. Cuevas
In the framework of the SouthTRAC Campaign (Transport and Composition of the Southern Hemisphere Upper Troposphere and Lower Stratosphere) based on Rio Grande, Argentina, a local research group from CONICET (Argentine National Research Council) joine
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e5a966aecc72656ca422aa4c1641cd0a
https://doi.org/10.5194/egusphere-egu21-2298
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5
Intercomparison Between Surrogate, Explicit, and Full Treatments of VSL Bromine Chemistry Within the CAM‐Chem Chemistry‐Climate Model
Autor: Jean-Francois Lamarque, Beatriz M. Toselli, Simone Tilmes, Ross J. Salawitch, Douglas E. Kinnison, Carlos A. Cuevas, Julie M. Nicely, Pamela Wales, Ana I. López-Noreña, Alfonso Saiz-Lopez, Javier Alejandro Barrera, Rafael P. Fernandez
Publikováno v: Geophysical Research Letters
Digital.CSIC. Repositorio Institucional del CSIC
instname
10 pags., 4 figs.
Many Chemistry-Climate Models (CCMs) include a simplified treatment of brominated very short-lived (VSL) species by assuming CHBr as a surrogate for VSL. However, neglecting a comprehensive treatment of VSL in CCMs may yield an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::040a126e699fe97d5e90f362b0272d9c
https://doi.org/10.1029/2020gl091125
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7
Rate coefficient and mechanism of the OH-initiated degradation of cyclobutanol: A combined experimental and theoretical study
Autor: Rafael A. Jara-Toro, María de los A. Garavagno, Javier Alejandro Barrera, Gustavo A. Pino, Federico J. Hernández, Genesys Mahecha, Raúl A. Taccone
Publikováno v: Atmospheric Environment. 268:118821
The degradation process of cyclobutanol (cButOH) by hydroxyl radical (OH), under atmospheric conditions, (750 ± 10) Torr of air and (296 ± 2) K, has been studied. The rate coefficient for the title reaction (k296K = (7.3 ± 0.6) x 10−12 cm3 molec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::653959a443c75437c2729749e09ec350
https://doi.org/10.1016/j.atmosenv.2021.118821
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8
Rate Coefficient and Mechanism of the OH-Initiated Degradation of 1-Chlorobutane: Atmospheric Implications
Autor: Rafael A. Jara-Toro, Juan P. Aranguren-Abrate, Javier Alejandro Barrera, Gustavo A. Pino, Raúl A. Taccone
Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Journal of Physical Chemistry A
Journal of Physical Chemistry A, American Chemical Society, 2020, 124 (1), pp.229-239. ⟨10.1021/acs.jpca.9b10426⟩
In this work, we investigate the degradation process of 1-chlorobutane, initiated by OH radicals, under atmospheric conditions (air pressure of 750 Torr and 296 K) from both experimental and theoretical approaches. In the first one, a relative kineti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5f81c6b9040da8ebc5bfccd3b613bcf
https://pubmed.ncbi.nlm.nih.gov/31825215
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9
Modeling the Sources and Chemistry of Polar Tropospheric Halogens (Cl, Br, and I) Using the CAM-Chem Global Chemistry-Climate Model
Autor: Carlos A. Cuevas, John P. Burrows, Christopher S. Blaszczak-Boxe, Kitae Kim, Antia Carmona-Balea, Rafael P. Fernandez, Javier Alejandro Barrera, Anja Schönhardt, Anne Marlene Blechschmidt, Wonyong Choi, Douglas E. Kinnison, Jean-Francois Lamarque, T. D. Hay, Alfonso Saiz-Lopez
Publikováno v: Journal of Advances in Modeling Earth Systems
Journal of Advances in Modeling Earth Systems, Vol 11, Iss 7, Pp 2259-2289 (2019)
Digital.CSIC. Repositorio Institucional del CSIC
instname
31 pags., 12 figs., 6 tabs. -- Open Access funded by Creative Commons Atribution Licence 4.0. -- jame20925-sup-0001_Supporting_Information.pdf
Current chemistry climate models do not include polar emissions and chemistry of halogens. This work p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1de318856d3b1968c3daad4c7931f9fc
http://hdl.handle.net/10261/206448
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10
Kinetic study of the OH and Cl-initiated oxidation, lifetimes and atmospheric acceptability indices of three halogenated ethenes
Autor: Pablo R. Dalmasso, Javier Alejandro Barrera, Raúl A. Taccone, Juan Pablo Aranguren Abrate, Silvia I. Lane
Publikováno v: RSC Advances. 5:73501-73509
The gas-phase kinetics for the reactions of OH radicals and Cl atoms with (E/Z)-CHClCHF, (E/Z)-CFClCFCl, and CCl2CF2 were investigated at room-temperature and atmospheric pressure. A conventional relative-rate technique was used to determine the rate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8d1d5849406d571ff399bac5cadce09
https://doi.org/10.1039/c5ra13589c
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