TY - JOUR
T1 - Influence of initial and boundary conditions for ozone modeling in very complex terrains
T2 - A case study in the northeastern Iberian Peninsula
AU - Jiménez, Pedro
AU - Parra, René
AU - Baldasano, José M.
N1 - Funding Information:
This work was developed under the research contract REN2003-09753-C02 of the Spanish Ministry of Science and Technology. The Spanish Ministry of Education and Science is also thanked for the FPU doctoral fellowship hold by P. Jiménez. The authors gratefully acknowledge O. Jorba for providing meteorological inputs and E. López for the implementation of EMICAT2000 into a GIS system. Air quality stations data and information for implementing industrial emissions were provided by the Environmental Department of the Catalonia Government (Spain).
PY - 2007/9
Y1 - 2007/9
N2 - Initial (IC) and boundary conditions (BC) are required in order to solve the set of stiff differential equations included in air quality models. In this work, the influences of IC-BC are analyzed in the northeastern Iberian Peninsula (NEIP) by applying MM5-EMICAT2000-CMAQ. A multiscale-nested configuration has been used to generate the IC-BC. The wider domain (D1) covers an area of 1392 × 1104 km2 centered in the Iberian Peninsula. Domain 2 (D2) covers an area of 272 × 272 km2 in the NEIP (D2) with high spatial and temporal resolution. The information related to BC has been supplied to D2 through one-way nesting. Different scenarios were considered (base case, increments of +50% in ozone (O3) IC, +50% in O3 BC, +50% in O3 precursors IC, +50% in O3 precursors BC and clean BC). The impacts of the IC on a site decrease with simulation time. Focusing on the conditions within the PBL, a 48-h spin-up time is sufficient to reduce the impact factor of IC to 10% or less for O3 since the influence of pervasive local emissions. The influences of BC are more important for areas near domain boundaries, especially in areas where the contribution of O3 precursors is due to a short-medium range transport.
AB - Initial (IC) and boundary conditions (BC) are required in order to solve the set of stiff differential equations included in air quality models. In this work, the influences of IC-BC are analyzed in the northeastern Iberian Peninsula (NEIP) by applying MM5-EMICAT2000-CMAQ. A multiscale-nested configuration has been used to generate the IC-BC. The wider domain (D1) covers an area of 1392 × 1104 km2 centered in the Iberian Peninsula. Domain 2 (D2) covers an area of 272 × 272 km2 in the NEIP (D2) with high spatial and temporal resolution. The information related to BC has been supplied to D2 through one-way nesting. Different scenarios were considered (base case, increments of +50% in ozone (O3) IC, +50% in O3 BC, +50% in O3 precursors IC, +50% in O3 precursors BC and clean BC). The impacts of the IC on a site decrease with simulation time. Focusing on the conditions within the PBL, a 48-h spin-up time is sufficient to reduce the impact factor of IC to 10% or less for O3 since the influence of pervasive local emissions. The influences of BC are more important for areas near domain boundaries, especially in areas where the contribution of O3 precursors is due to a short-medium range transport.
KW - Air quality modeling
KW - Complex terrains
KW - Initial and boundary conditions
KW - Ozone
KW - Photochemistry
UR - https://www.scopus.com/pages/publications/34147156218
U2 - 10.1016/j.envsoft.2006.08.004
DO - 10.1016/j.envsoft.2006.08.004
M3 - Artículo
AN - SCOPUS:34147156218
SN - 1364-8152
VL - 22
SP - 1294
EP - 1306
JO - Environmental Modelling and Software
JF - Environmental Modelling and Software
IS - 9
ER -