Research Article

Simulation of Surface Ozone Pollution in the Central Gulf Coast Region Using WRF/Chem Model: Sensitivity to PBL and Land Surface Physics

Table 1

Details of the grids and physics options used in the WRF/Chem model.

DynamicsPrimitive equation, nonhydrostatic
Vertical resolution31 levels
DomainsDomain 1Domain 2Domain 3
Horizontal resolution36 km12 km4 km
Grid points54 × 40109 × 76187 × 118
Domains of integration98.00°W–72.77°W94.86°W –79.56°W92.5°W–84.60°W
22.93°N–39.47°N26.49°N –36.33°N28.39°N–33.66°N

RadiationGoddard scheme for short wave
RRTM scheme for long wave

Sea surface temperatureNCEP FNL analysis data

Cumulus convectionNew Grell scheme on the outer grids domain 1 and domain 2
Explicit moistureLin scheme
Sensitivity ExperimentsPBL/Land Surface Scheme
YSUSOILYonsei University PBL, 5-layer soil diffusion model
YSUNOAHYonsei University PBL, NOAH LSM
YSURUCYonsei University PBL, RUC LSM
MYJSOILMellor-Yamada-Janjic PBL, 5-layer soil diffusion model
MYJNOAHMellor-Yamada-Janjic PBL, NOAH LSM
MYJRUCMellor-Yamada-Janjic PBL, RUC LSM
ACMSOILAsymmetric Convective Model, 5-layer soil diffusion model
ACMNOAHAsymmetric Convective Model, NOAH LSM
ACMRUCAsymmetric Convective Model, RUC LSM
ACMPXAsymmetric Convective Model, Pleim-Xue LSM