Results 1 to 10 of about 161 (98)

Gas-Phase Reaction of trans-2-Methyl-2-butenal with Cl: Kinetics, Gaseous Products, and SOA Formation [PDF]

Atmosphere, 2020
The gas-phase reaction between trans-2-methyl-2-butenal and chlorine (Cl) atoms has been studied in a simulation chamber at 298 ± 2 K and 760 ± 5 Torr of air under free-NOx conditions. The rate coefficient of this reaction was determined as k = (2.45 ± 0.
María Antiñolo, María Asensio, José Albaladejo, Elena Jiménez   +3 more
doaj   +2 more sources

Atmospheric impact of 2-methylpentanal emissions: kinetics, photochemistry, and formation of secondary pollutants [PDF]

Atmospheric Chemistry and Physics, 2023
The tropospheric fate of 2-methylpentanal (2MP) has been investigated in this work. First, the photochemistry of 2MP under simulated solar conditions was investigated by determining the UV absorption cross sections (220–360 nm) and the effective ...
M. Asensio, M. Asensio, S. Blázquez, S. Blázquez, S. Blázquez, M. Antiñolo, M. Antiñolo, J. Albaladejo, J. Albaladejo, E. Jiménez, E. Jiménez   +10 more
doaj   +1 more source

Evaluation of the daytime tropospheric loss of 2-methylbutanal [PDF]

Atmospheric Chemistry and Physics, 2022
Saturated aldehydes, e.g. 2-methylbutanal (2 MB, CH3CH2CH(CH3)C(O)H), are emitted into the atmosphere by several biogenic sources. The first step in the daytime atmospheric degradation of 2 MB involves gas-phase reactions initiated by hydroxyl (OH ...
M. Asensio, M. Asensio, M. Antiñolo, M. Antiñolo, M. Antiñolo, S. Blázquez, J. Albaladejo, J. Albaladejo, E. Jiménez, E. Jiménez   +9 more
doaj   +1 more source

Impact of long-range transport over the Atlantic Ocean on Saharan dust optical and microphysical properties based on AERONET data [PDF]

Atmospheric Chemistry and Physics, 2018
Arid regions are a major source of mineral dust aerosol. Transport from these sources can have a great impact on aerosol climatology in distant regions.
C. Velasco-Merino, D. Mateos, C. Toledano, J. M. Prospero, J. Molinie, L. Euphrasie-Clotilde, R. González, V. E. Cachorro, A. Calle, A. M. de Frutos   +9 more
doaj   +1 more source

Comparison of global UV spectral irradiance measurements between a BTS CCD-array and a Brewer spectroradiometer [PDF]

Atmospheric Measurement Techniques, 2022
Spectral measurements of UV irradiance are of great importance for protecting human health as well as for supporting scientific research. To perform these measurements, double monochromator scanning spectroradiometers are the preferred devices thanks to ...
C. González, C. González, J. M. Vilaplana, J. A. Bogeat, A. Serrano   +4 more
doaj   +1 more source

Aerosol radiative effects in the ultraviolet, visible, and near-infrared spectral ranges using long-term aerosol data series over the Iberian Peninsula [PDF]

Atmospheric Chemistry and Physics, 2014
A better understanding of aerosol radiative properties is a crucial challenge for climate change studies. This study aims at providing a complete characterization of aerosol radiative effects in different spectral ranges within the shortwave (SW) solar ...
D. Mateos, M. Antón, C. Toledano, V. E. Cachorro, L. Alados-Arboledas, M. Sorribas, M. J. Costa, J. M. Baldasano   +7 more
doaj   +1 more source

Gas-Phase Reactivity of OH Radicals With Ammonia (NH3) and Methylamine (CH3NH2) at Around 22 K

Frontiers in Astronomy and Space Sciences, 2022
Interstellar molecules containing N atoms, such as ammonia (NH3) and methylamine (CH3NH2), could be potential precursors of amino acids like the simplest one, glycine (NH2CH2COOH).
Daniel González, Bernabé Ballesteros, Bernabé Ballesteros, André Canosa, José Albaladejo, José Albaladejo, Elena Jiménez, Elena Jiménez   +7 more
doaj   +1 more source

Comparison of UV irradiances from Aura/Ozone Monitoring Instrument (OMI) with Brewer measurements at El Arenosillo (Spain) – Part 2: Analysis of site aerosol influence [PDF]

Atmospheric Chemistry and Physics, 2010
Several validation studies have shown a notable overestimation of the clear sky ultraviolet (UV) irradiance at the Earth's surface derived from satellite sensors such as the Total Ozone Mapping Spectrometer (TOMS) and the Ozone Monitoring Instrument (OMI)
V. E. Cachorro, C. Toledano, M. Antón, A. Berjón, A. de Frutos, J. M. Vilaplana, A. Arola, N. A. Krotkov   +7 more
doaj   +1 more source

Multifractal analysis of low-latitude geomagnetic fluctuations [PDF]

Annales Geophysicae, 2009
The technique of large deviation multifractal spectrum has shown that the high-latitude (77.5° N, 69.2° W) geomagnetic fluctuations can be described from direct dissipation process or loading-unloading regimes of the solar wind-magnetosphere ...
M. J. A. Bolzan, R. R. Rosa, Y. Sahai
doaj   +1 more source

Atmospheric fate of a series of saturated alcohols: kinetic and mechanistic study [PDF]

Atmospheric Chemistry and Physics, 2020
The atmospheric fate of a series of saturated alcohols (SAs) was evaluated through kinetic and reaction product studies with the main atmospheric oxidants. These SAs are alcohols that could be used as fuel additives.
I. Colmenar, I. Colmenar, P. Martin, P. Martin, B. Cabañas, B. Cabañas, S. Salgado, S. Salgado, A. Tapia, A. Tapia, I. Aranda, I. Aranda   +11 more
doaj   +1 more source