A5007792842- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Atmospheric aerosols and clouds
- Vehicle emissions and performance
- Methane Hydrates and Related Phenomena
- Air Quality and Health Impacts
Météo-France
2020-2024
Université de Toulouse
2020-2021
Centre National de la Recherche Scientifique
2020-2021
Centre National de Recherches Météorologiques
2020
Abstract. In this paper, the fate of biomass burning emissions carbon monoxide is studied with global chemistry–transport model MOCAGE (MOdélisation de Chimie Atmosphérique à Grande Échelle) and IAGOS (In-Service Aircraft for a Global Observing System) airborne measurements year 2013. The objectives are firstly to improve their representation within secondly analyse contribution concentrations in upper troposphere. At first, new implementation injection developed MOCAGE, using latest...
Methane is a potent greenhouse gas which has substantially contributed to climate change since the pre-industrial era, second only in importance carbon dioxide. Due its short atmospheric lifetime and high global warming potential, methane emissions have disproportionately large impacts on near-term change. Beyond direct role as gas, also other important implications for climate, human health, air quality vegetation, largely due impact tropospheric ozone. Thus, reducing been identified key...
Abstract. Well constrained volcanic emissions inventories in chemistry transport models are necessary to study the impacts induced by these sources on tropospheric sulfur composition and species concentrations depositions at surface. In this paper, changes update of inventory studied using global model MOCAGE (MOdèle de Chimie Atmosphérique à Grande Échelle). Unlike previous (Andres Kasgnoc, 1998), updated one (Carn et al., 2016, 2017) uses more accurate information includes contributions...
Abstract. In this paper the fate of biomass burning emissions carbon monoxide is studied with global chemistry transport model MOCAGE and IAGOS airborne measurements for year 2013. The objectives are firstly to improve their representation within secondly analyse contribution concentrations in upper troposphere. At first, a new implementation injection developed MOCAGE, using latest products available GFAS inventory on plume altitude height. This method validated against observations CO made...
Methane (CH4) is the second most important greenhouse gas after carbon dioxide (CO2), and improving representation of its cycle in climate models a key step to reduce uncertainties projections. Its main sink chemical removal through oxidation with hydroxyl radicals (OH) troposphere, which are produced during photolysis ozone (O3) presence water vapour. This process an example complex interactions between methane system, highlighting necessity have explicit interactive atmospheric composition...
Many global climate and Earth system models that participated in CMIP6 did not include fully interactive chemistry mechanisms mainly due to the large associated computational cost of these schemes. A number studies have recently highlighted potential importance enhanced aerosol-chemistry-climate coupling feedbacks for anthropogenic effective radiative forcing (ERF) a key agents such as aerosols (Thornhill et al., 2021), methane (O’Connor 2022) ozone. The different levels complexity...
Abstract. The contribution of volcanic emissions is argued as non-linear on the sulfur species burden. Thus, well constraining inventories necessary to better study impacts induced by these pollution sources troposheric composition, concentrations and depositions at global surface. In this paper, changes update inventory chemistry-transport model MOCAGE (MOdèle de Chimie Atmosphérique à Grande Échelle) are studied. Unlike current [Andres Kasgnoc (1998)], new [Carn et al. (2016, 2017)]...
<p>The UTLS (Upper Troposphere/Lower Stratosphere) is a key layer of the atmosphere as its chemical composition impacts both troposphere and stratosphere, therefore plays significant role in climate system. Ozone at this altitude for instance great on surface temperature. Unlike stratosphere; it can be produced from photolysis precursors originating troposphere; mainly nitrous oxides (NO<sub>x</sub>) carbon monoxide (CO) pressure range. Biomass...