Acidic gases (HCOOH, CH3COOH, HNO3, HCl, and SO2) and related aerosol species at a high mountain Alpine site (4360 m elevation) in Europe

Autor: Michel Legrand, I. Dombrowski-Etchevers, Benjamin Jourdain, Susanne Preunkert
Přispěvatelé: Laboratoire de glaciologie et géophysique de l'environnement (LGGE), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS), EU CARBOSOL project (contract EVK2 CT2001-00113), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Atmospheric Science
acidic gases
010504 meteorology & atmospheric sciences
Soil Science
chemistry.chemical_element
010501 environmental sciences
Aquatic Science
Oceanography
01 natural sciences
monocarboxylic acids
Troposphere
chemistry.chemical_compound
Nitrate
free troposphere
Geochemistry and Petrology
Earth and Planetary Sciences (miscellaneous)
Sulfate aerosol
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology
Sulfate
Sulfur dioxide
0105 earth and related environmental sciences
Earth-Surface Processes
Water Science and Technology
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Ecology
Paleontology
Forestry
Sulfur
Nitrogen
Aerosol
Geophysics
chemistry
13. Climate action
Space and Planetary Science
Climatology
Environmental chemistry
Environmental science
Zdroj: Journal of Geophysical Research: Atmospheres
Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2007, 112 (D23S12), 1 à 7 p. ⟨10.1029/2006JD008225⟩
ISSN: 2169-897X
2169-8996
DOI: 10.1029/2006JD008225⟩
Popis: International audience; During a field campaign performed at 4360 m elevation in the French Alps in summer 2004, atmospheric levels of acidic gases (HCOOH, CH3COOH, HNO3, HCl, and SO2) and related aerosol species were investigated using mist chamber and denuder tube samplings. Sulfate aerosol levels greatly exceeded those of gaseous SO2. Conversely, chloride, nitrate and particularly monocarboxylates were much more present in the gas phase than in the aerosol phase. On a molar basis, formic and acetic acids are the most abundant acidic gases (∼14 nmol m−3 STP), followed by nitric acid (7 nmol m−3 STP), hydrochloric acid (1.7 nmol m−3 STP) and sulfur dioxide (0.8 nmol m−3 STP). These data gained in the free troposphere over Europe in summer are discussed and compared to those obtained during aircraft missions conducted over North America and the northwest Pacific near China. It is concluded that the concentrations of acidic gases and related aerosol species are quite similar in the free troposphere in summer over Europe and North America. Concentrations of sulfur and nitrogen species in the free troposphere are lower over Europe (and North America) than over the Pacific region located near China (a factor 5 and 2, respectively). Finally, measurements achieved in this study tend to indicate that secondary production is important for the atmospheric budget of carboxylic acids.
Databáze: OpenAIRE
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