The effects of advection solvers on the performance of air quality models
Conference
·
OSTI ID:466225
- California Air Resources Board, Sacramento, CA (United States)
- MCNC-North Carolina Supercomputing Center, Research Triangle Park, NC (United States)
The available numerical solvers for the advection term in the chemical species conservation equation have different properties, and consequently introduce different types of errors. These errors can affect the performance of air quality models and lead to biases in model results. In this study, a large number of advection solvers have been studied and six of them were identified as having potential for use in photochemical models. The identified solvers were evaluated extensively using various numerical tests that are relevant to air quality simulations. Among the solvers evaluated, three of them showed better performance in terms of accuracy and some other characteristics such as conservation of mass and positivity. They are the solvers by Bott, Yuamartino, and Dabdub and Seinfeld. These three solvers were incorporated into the SARMAP Air Quality Model (SAQM) and the August 3-6, 1990 ozone episode in the San Joaquin Valley of California was simulated with each. A model performance analysis was conducted for each simulation using the rich air quality database of the 1990 San Joaquin Valley Air Quality Study. The results of the simulations were compared with each other and the effects of advection solvers on the performance of the model are discussed.
- OSTI ID:
- 466225
- Report Number(s):
- CONF-9606185--
- Country of Publication:
- United States
- Language:
- English
Similar Records
An investigation of the uncertainties related to the solution of horizontal advection in UAM-IV
Photochemical modeling of August 3--6, 1990 ozone episode in central California using the SARMAP air quality model. Part 2: Sensitivity and diagnostic testing
The sensitivity of numerical advection schemes to mass inconsistency in wind fields
Conference
·
Mon Dec 30 23:00:00 EST 1996
·
OSTI ID:466231
Photochemical modeling of August 3--6, 1990 ozone episode in central California using the SARMAP air quality model. Part 2: Sensitivity and diagnostic testing
Conference
·
Mon Dec 30 23:00:00 EST 1996
·
OSTI ID:422970
The sensitivity of numerical advection schemes to mass inconsistency in wind fields
Conference
·
Mon Dec 30 23:00:00 EST 1996
·
OSTI ID:422898