Influence of anthropogenic emissions and boundary conditions on multi-model simulations of major air pollutants over Europe and North America in the framework of AQMEII3


Im U., Christensen J. H. , Geels C., Hansen K. M. , Brandt J., SOLAZZO E., ...More

ATMOSPHERIC CHEMISTRY AND PHYSICS, vol.18, no.12, pp.8929-8952, 2018 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 12
  • Publication Date: 2018
  • Doi Number: 10.5194/acp-18-8929-2018
  • Title of Journal : ATMOSPHERIC CHEMISTRY AND PHYSICS
  • Page Numbers: pp.8929-8952

Abstract

In the framework of the third phase of the Air Quality Model Evaluation International Initiative (AQMEII3), and as contribution to the second phase of the Hemispheric Transport of Air Pollution (HTAP2) activities for Europe and North America, the impacts of a 20% decrease of global and regional anthropogenic emissions on surface air pollutant levels in 2010 are simulated by an international community of regional-scale air quality modeling groups, using different state-of-the-art chemistry and transport models (CTMs). The emission perturbations at the global level, as well as over the HTAP2-defined regions of Europe, North America and East Asia, are first simulated by the global Composition Integrated Forecasting System (C-IFS) model from European Centre for Medium-Range-Weather Forecasts (ECMWF), which provides boundary conditions to the various regional CTMs participating in AQMEII3. On top of the perturbed boundary conditions, the regional CTMs used the same set of perturbed emissions within the regional domain for the different perturbation scenarios that introduce a 20% reduction of anthropogenic emissions globally as well as over the HTAP2-defined regions of Europe, North America and East Asia.