the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Linking climate and air quality over Europe: effects of meteorology on PM2.5 concentrations
A. G. Megaritis
C. Fountoukis
P. E. Charalampidis
H. A. C. Denier van der Gon
C. Pilinis
S. N. Pandis
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Accurate national methane (CH4) emission estimates are essential for tracking progress towards climate goals. This study compares estimates from Finland, which use different methods and scales, and shows how well a global model estimates emissions within a country. The bottom-up estimates vary a lot but constraining them with atmospheric CH4 measurements brought the estimates closer together. We also highlight the importance of quantifying natural emissions alongside anthropogenic emissions.
chemical regimeof PM sensitivity to ammonia and nitric acid availability.
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A state-of-the-art thermodynamic model has been coupled with the city-scale chemistry transport model EPISODE–CityChem to investigate the equilibrium between the inorganic gas and aerosol phases over the greater Athens area, Greece. The simulations indicate that the formation of nitrates in an urban environment is significantly affected by local nitrogen oxide emissions, as well as ambient temperature, relative humidity, photochemical activity, and the presence of non-volatile cations.
hiddensource of inter-model variability and may be leading to bias in some climate model results.