4 results on '"Maxime Bridoux"'
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2. Classification of Clouds Sampled at the Puy de Dôme Station (France) Based on Chemical Measurements and Air Mass History Matrices
- Author
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Jean-Luc Baray, Angelica Bianco, Laurent Deguillaume, Maxime Bridoux, Anne-Marie Delort, P. Renard, Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Institut national des sciences de l'Univers (INSU - CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), INAR Physics, Laboratoire de Météorologie Physique - Clermont Auvergne (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de Clermont-Ferrand - Clermont Auvergne (ICCF), Sigma CLERMONT (Sigma CLERMONT)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), and Université Clermont Auvergne (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
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Atmospheric Science ,010504 meteorology & atmospheric sciences ,Dome ,Puy de Dôme station (PUY) ,010501 environmental sciences ,Environmental Science (miscellaneous) ,lcsh:QC851-999 ,Atmospheric sciences ,oceanic vs. continental influences ,01 natural sciences ,114 Physical sciences ,Partial least squares regression ,[CHIM]Chemical Sciences ,Statistical analysis ,Air mass ,0105 earth and related environmental sciences ,Physicochemical Processes ,Cloud microphysics ,Chemical measurement ,partial least squares (PLS) regression ,air mass history ,13. Climate action ,[SDU]Sciences of the Universe [physics] ,Principal component analysis ,[SDE]Environmental Sciences ,Environmental science ,lcsh:Meteorology. Climatology ,cloud chemistry and physics - Abstract
A statistical analysis of 295 cloud samples collected at the Puy de Dô, me station in France (PUY), covering the period 2001&ndash, 2018, was conducted using principal component analysis (PCA), agglomerative hierarchical clustering (AHC), and partial least squares (PLS) regression. Our model classified the cloud water samples on the basis of their chemical concentrations and of the dynamical history of their air masses estimated with back-trajectory calculations. The statistical analysis split our dataset into two sets, i.e., the first set characterized by westerly air masses and marine characteristics, with high concentrations of sea salts and the second set having air masses originating from the northeastern sector and the &ldquo, continental&rdquo, zone, with high concentrations of potentially anthropogenic ions. It appears from our dataset that the influence of cloud microphysics remains minor at PUY as compared with the impact of the air mass history, i.e., physicochemical processes, such as multiphase reactivity.
- Published
- 2020
3. Chemical Characterization of Cloudwater Collected at Puy de Dôme by FT-ICR MS Reveals the Presence of SOA Components
- Author
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Maxime Bridoux, Mickael Ribeiro, Christian George, Nadine Chaumerliac, Jean-Luc Baray, Angelica Bianco, Laurent Deguillaume, Matthieu Riva, Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de météorologie physique (LaMP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS), Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), IRCELYON-Catalytic and Atmospheric Reactivity for the Environment (CARE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
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Atmospheric Science ,010504 meteorology & atmospheric sciences ,010501 environmental sciences ,Mass spectrometry ,complex mixtures ,01 natural sciences ,chemistry.chemical_compound ,[CHIM.ANAL]Chemical Sciences/Analytical chemistry ,Geochemistry and Petrology ,Dissolved organic carbon ,Cloud condensation nuclei ,Isoprene ,ComputingMilieux_MISCELLANEOUS ,0105 earth and related environmental sciences ,Total organic carbon ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Aqueous solution ,[CHIM.ORGA]Chemical Sciences/Organic chemistry ,Aerosol ,chemistry ,13. Climate action ,Space and Planetary Science ,Environmental chemistry ,[SDE]Environmental Sciences ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,Ion cyclotron resonance - Abstract
Secondary organic aerosols (SOA) produced in the atmosphere from sequential oxidation of biogenic or anthropogenic volatile organic compounds (VOC) represent a significant part of the atmospheric organic aerosol. Aerosol particles can act as cloud condensation nuclei or can be scavenged by cloud droplets, where organic carbon undergo chemical and biological transformations. Due to its high complexity, a nontargeted analysis by FT-ICR MS (Fourier-transform ion cyclotron resonance mass spectrometry) has been used to characterize the dissolved organic matter at a molecular level. SOA compounds have been detected in six aqueous samples collected in 2017 at the Puy de Dome station (PUY, France). SOA tracers, produced by VOC oxidation in environmental chambers or in ambient air and characterized in previous studies by mass spectrometry, were searched by FT-ICR MS in cloudwaters. Results clearly indicate the presence of oxidation products of isoprene, α- and β-pinene, and other monoterpenes and sesquiterpenes. I...
- Published
- 2019
4. Molecular Characterization of Cloud Water Samples Collected at the Puy de Dôme (France) by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
- Author
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Edith Nicol, Mickaël Vaitilingom, Laurent Deguillaume, Nadine Chaumerliac, Angelica Bianco, Jean-Luc Baray, Maxime Bridoux, Laboratoire de météorologie physique (LaMP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de chimie moléculaire (LCM), École polytechnique (X)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), ANR-13-BS06-0004,BIOCAP,Impacts BIOlogiques et photochimiques sur la CAPacité oxydante du nuage(2013), Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS), and Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)
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010504 meteorology & atmospheric sciences ,Electrospray ionization ,Analytical chemistry ,chemistry.chemical_element ,010501 environmental sciences ,Mass spectrometry ,01 natural sciences ,complex mixtures ,Fourier transform ion cyclotron resonance ,Mass Spectrometry ,Environmental Chemistry ,Organic matter ,Air mass ,0105 earth and related environmental sciences ,chemistry.chemical_classification ,Aerosols ,Fourier Analysis ,[CHIM.ORGA]Chemical Sciences/Organic chemistry ,General Chemistry ,Cyclotrons ,6. Clean water ,Aerosol ,chemistry ,13. Climate action ,Monoisotopic mass ,France ,Carbon - Abstract
International audience; Cloud droplets contain dynamic and complex pools of highly heterogeneous organic matter, resulting from the dissolution of both water-soluble organic carbon in atmospheric aerosol particles and gas-phase soluble species, and are constantly impacted by chemical, photochemical, and biological transformations. Cloud samples from two summer events, characterized by different air masses and physicochemical properties, were collected at the Puy de Dôme station in France, concentrated on a strata-X solid-phase extraction cartridge and directly infused using electrospray ionization in the negative mode coupled with ultrahigh-resolution mass spectrometry. A significantly higher number (n = 5258) of monoisotopic molecular formulas, assigned to CHO, CHNO, CHSO, and CHNSO, were identified in the cloud sample whose air mass had passed over the highly urbanized Paris region (J1) compared to the cloud sample whose air mass had passed over remote areas (n = 2896; J2). Van Krevelen diagrams revealed that lignins/CRAM-like, aliphatics/proteins-like, and lipids-like compounds were the most abundant classes in both samples. Comparison of our results with previously published data sets on atmospheric aqueous media indicated that the average O/C ratios reported in this work (0.37) are similar to those reported for fog water and for biogenic aerosols but are lower than the values measured for aerosols sampled in the atmosphere and for aerosols produced artificially in environmental chambers.
- Published
- 2018
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