Publications by authors named "C Galy-Lacaux"
Earth system and environmental impact studies need high quality and up-to-date estimates of atmospheric deposition. This study demonstrates the methodological benefits of multimodel ensemble and measurement-model fusion mapping approaches for atmospheric deposition focusing on 2010, a year for which several studies were conducted. Global model-only deposition assessment can be further improved by integrating new model-measurement techniques, including expanded capabilities of satellite observations of atmospheric composition.
View Article and Find Full Text PDFSocioeconomic development in low- and middle-income countries has been accompanied by increased emissions of air pollutants, such as nitrogen oxides [NO: nitrogen dioxide (NO) + nitric oxide (NO)], which affect human health. In sub-Saharan Africa, fossil fuel combustion has nearly doubled since 2000. At the same time, landscape biomass burning-another important NO source-has declined in north equatorial Africa, attributed to changes in climate and anthropogenic fire management.
View Article and Find Full Text PDFAn amendment to this paper has been published and can be accessed via a link at the top of the paper.
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- Air pollution significantly affects the environment and human health; this study focuses on air particles from a mining area in Cartagena-La Unión, Spain, to assess their health risks.
- Four monitoring sites were chosen: a mining tailing, an urban area, an agricultural zone, and a coastal site, revealing varying particle sizes and mineral compositions, with high levels of harmful metals like Zn, Pb, and As in polluted areas.
- Risk assessments highlighted that while total metal content indicated unacceptable cancer and hazard risks at the mining tailing, considering bioaccessible metal fractions resulted in more acceptable risk levels, indicating potential overestimation when using total content alone.
The profound changes in global SO emissions over the last decades have affected atmospheric composition on a regional and global scale with large impact on air quality, atmospheric deposition and the radiative forcing of sulfate aerosols. Reproduction of historical atmospheric pollution levels based on global aerosol models and emission changes is crucial to prove that such models are able to predict future scenarios. Here, we analyze consistency of trends in observations of sulfur components in air and precipitation from major regional networks and estimates from six different global aerosol models from 1990 until 2015.
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