Analysis of the effects of vertical grid resolution on the performance of the UAM-IV vs. UAM-V in the Lake Michigan region
- Earth Tech, Concord, MA (United States)
As part of the Cooperative Regional Model Evaluation (CReME) study, it was found that there was little difference in the abilities of the UAM-IV and UAM-V photochemical models to simulate the observed ozone concentrations during two 1991 ozone episodes in the Lake Michigan region. However, it was noted that UAM-V underpredicts the ozone precursors such as volatile organic compounds and nitrogen oxides (VOC and NO{sub x}) by less than does UAM-IV when compared to the extensive three-dimensional observations made during the Lake Michigan Ozone Study. UAM-IV was implemented using five vertical layers that can vary in thickness with space and time, depending on the local mixing depth. UAM-V was run using eight fixed layers with high resolution near the ground. It was hypothesized that UAM-IV`s relative inability to capture detailed spatial variability in the precursor fields could be due in large part to the diminished resolution of the model compared to UAM-V. In this paper, results from a ten-layer version of UAM-IV are compared to both UAM-V and the five-layer version of UAM-IV, using detailed ozone and ozone precursor measurements from both the surface and aircraft.
- OSTI ID:
- 422930
- Report Number(s):
- CONF-960127-; TRN: IM9707%%237
- 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
Update of results from the Cooperative Regional Model Evaluation (CReME) project
Comparative evaluation of the MM5 and RAMS prognostic meteorological models for two Lake Michigan Ozone Study (LMOS) episodes