TY - JOUR
T1 - Influence of boundary conditions and anthropogenic emission inventories on simulated O3 and PM2.5 concentrations over Lebanon
AU - Abdallah, C.
AU - Sartelet, K.
AU - Afif, C.
N1 - Publisher Copyright:
© 2016 Turkish National Committee for Air Pollution Research and Control
PY - 2016/11/1
Y1 - 2016/11/1
N2 - This study investigates the influence of boundary conditions and anthropogenic emission inventories on the simulated O3 and PM2.5 concentrations over a middle-eastern country – Lebanon. The Polyphemus chemical transport model (CTM) is used over Lebanon to simulate O3 and PM2.5 concentrations. Comparisons to measurements at a sub-urban site of Beirut between 2 and 13 July 2011 show that O3 is largely over-estimated when concentrations from a large-scale model are used as boundary conditions, as used in Waked et al. (2013). A global anthropogenic emission inventory (EDGAR-HTAP) is used with Polyphemus, in order to provide anthropogenic emissions for the Middle-East domain. Over Lebanon, sensitivity to emissions and to boundary conditions have been investigated. The comparison of EDGAR-HTAP to Waked et al. (2012) over Lebanon highlights high discrepancies between the inventories both in terms of emission estimates and spatial distribution. However, when studying the sensitivity to boundary conditions, O3 is well modeled when a Middle-East domain and the Lebanon domain are nested and thus achieves better statistics. The observed concentration is 48.8 μg m−3 and the respective concentrations for the simulation using MOZART4 and the one using the Polyphemus/Middle-East are 154.8 and 65.1 μg m−3. As for PM2.5 which is less sensitive to regional transport than O3, the influence of the boundary conditions on the PM2.5 concentrations at the site of comparison is low. The observed concentration is 20.7 μg m−3, while the modeled concentrations are 20.7 and 20.1 μg m−3 respectively.
AB - This study investigates the influence of boundary conditions and anthropogenic emission inventories on the simulated O3 and PM2.5 concentrations over a middle-eastern country – Lebanon. The Polyphemus chemical transport model (CTM) is used over Lebanon to simulate O3 and PM2.5 concentrations. Comparisons to measurements at a sub-urban site of Beirut between 2 and 13 July 2011 show that O3 is largely over-estimated when concentrations from a large-scale model are used as boundary conditions, as used in Waked et al. (2013). A global anthropogenic emission inventory (EDGAR-HTAP) is used with Polyphemus, in order to provide anthropogenic emissions for the Middle-East domain. Over Lebanon, sensitivity to emissions and to boundary conditions have been investigated. The comparison of EDGAR-HTAP to Waked et al. (2012) over Lebanon highlights high discrepancies between the inventories both in terms of emission estimates and spatial distribution. However, when studying the sensitivity to boundary conditions, O3 is well modeled when a Middle-East domain and the Lebanon domain are nested and thus achieves better statistics. The observed concentration is 48.8 μg m−3 and the respective concentrations for the simulation using MOZART4 and the one using the Polyphemus/Middle-East are 154.8 and 65.1 μg m−3. As for PM2.5 which is less sensitive to regional transport than O3, the influence of the boundary conditions on the PM2.5 concentrations at the site of comparison is low. The observed concentration is 20.7 μg m−3, while the modeled concentrations are 20.7 and 20.1 μg m−3 respectively.
KW - Air quality modeling
KW - Lebanon
KW - Middle East
KW - Ozone
KW - Particulate matter
UR - https://www.scopus.com/pages/publications/84994475753
U2 - 10.1016/j.apr.2016.06.001
DO - 10.1016/j.apr.2016.06.001
M3 - Review article
AN - SCOPUS:84994475753
SN - 1309-1042
VL - 7
SP - 971
EP - 979
JO - Atmospheric Pollution Research
JF - Atmospheric Pollution Research
IS - 6
ER -