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Urban greenhouse gases monitoring with the QualAir Fourier transform spectrometer in Paris

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Abstract

Monitoring greenhouse gases (GHGs) in large cities is becoming like air quality one of the priority environmental research areas for scientists and public health authorities. The QualAir platform at University Pierre et Marie Curie (UPMC), is an innovating experimental research platform dedicated to survey GHGs and urban air quality. As one of the major instruments of the QualAir platform, the ground-based Fourier transform spectrometer (QualAir FTS, IFS 125HR model) analyses the composition of the urban atmosphere of Paris, which is the third European megacity. The continous monitoring of GHGs and atmospheric pollutants are essential to improve the estimate of sources and sinks of GHGs and the understanding of urban air pollution processes. Associated with a sun-tracker, the QualAir remote sensing FTS operates in solar infrared absorption and enables to monitor many pollutants and GHGs, and to follow up their variability in the Ile-de-France region. A description of the QualAir FTS will be given. Concentrations of GHGs (CO2, CH4, N2O, …) are retrieved by the radiative transfer model PROFFIT. Located in the centre of Paris, the QualAir FTS can provide new and complementary urban measurements as compared to unpolluted ground-based stations of existing networks (NDACC and TCCON). We will show some first CO2 measurements acquired with our instrument in the framework of the French CO2-MEGAPARIS project, the main goal of which is to quantify CO2 emissions from Paris megacity. Such ground-based information will help to reduce uncertainties in carbon cycle models and to contribute to the characterization of regional GHGs fluxes, especially regarding anthropogenic emissions and trends.
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Dates and versions

hal-00659209 , version 1 (12-01-2012)

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  • HAL Id : hal-00659209 , version 1

Cite

Yao Té, Pascal Jeseck, Sébastien Payan, Isabelle Pépin, Claude Camy-Peyret, et al.. Urban greenhouse gases monitoring with the QualAir Fourier transform spectrometer in Paris. AGU Fall Meeting 2011, Dec 2011, San Francisco, California, United States. ⟨hal-00659209⟩
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