Sensitivity of the UAM to boundary conditions
- New York State Dept. of Environmental Conservation, Albany, NY (United States). Div. of Air Resources
- NOAA, Research Triangle Park, NC (United States)
- MCNC-North Carolina Super Computing Center, Research Triangle Park, NC (United States)
To comply with the 1990 Clean Air Act Amendments, grid-based photochemical models such as the Urban Airshed Model (UAM) are being used in developing emission control policies to alleviate the ozone non-attainment problem. Many of these regulatory applications are often limited to a one-way nesting scheme in which the UAM is embedded into a regional-scale model to define the initial and boundary conditions for the UAM. Previous applications of the UAM in the northeastern US were limited to examining the effect of boundary concentrations on the predicted ozone concentrations in the interior of the UAM domain. Recently, Alapaty et al. (1995) applied the Regional Oxidant Model (ROM) to assess the impact of diagnostic (DMET) and prognostic (PMET) meteorological fields on the ROM-predicted ozone and precursor levels. They found that the precursor concentrations were generally higher under PMET conditions than under DMET. In this study, the authors examine the uncertainties in the UAM-predicted ozone concentrations arising from uncertainties in the specification of boundary concentrations of ozone and its precursors from the ROM using PMET and DMET simulations for two high ozone episodes over the New York Airshed.
- Sponsoring Organization:
- Environmental Protection Agency, Washington, DC (United States)
- OSTI ID:
- 422921
- Report Number(s):
- CONF-960127-; TRN: IM9707%%228
- Resource Relation:
- Conference: 9. joint American Meteorological Society/Air and Waste Management Association conference on applications of air pollution meteorology, Atlanta, GA (United States), 28 Jan - 2 Feb 1996; Other Information: PBD: [1996]; Related Information: Is Part Of Ninth joint conference on applications of air pollution meteorology with A and WMA; PB: 672 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
An evaluation of the predictive performance of the photochemical grid models UAM-V and CAMx for the northeast corridor
Photochemical grid modeling of four high ozone episodes in the New England domain: CALGRID vs. UAM-IV