(There seems to be some correspondence with high regional ozone concentrations)
6. What components of particulate matter appear to have relatively high concentrations on
days with good visibility?
(Coarse particulate matter and OC)
7. What are typical values for the humidity adjustment factor during times of year when
most of the days with good visibility occur?
8. Does good visibility appear to occur under any specific meteorological conditions?
Answers to the preceding questions suggest that strategies to reduce sulfate
concentrations and, perhaps, regional ozone concentrations might be effective in reducing light
extinction on days when visibility is currently poor. The responses suggest that a strategy which
focuses on this alone should first be tried for the days with good visibility as well. Even though
sulfate concentrations appear low on such days, the fact that sulfates scatter light efficiently (see
Equation (6.1)) and relative humidity is still high enough to enhance this effect is worth
considering. Responses suggest that further meteorological analyses would be worthwhile prior
to selecting strategies to simulate with a resource intensive regional model.
It should be clear from the preceding examples that the initial conceptual description of
an area’s nonattainment problem draws on readily available information and need not be
detailed. It is intended to help launch development and implementation of a modeling/analysis
protocol in a productive direction. It will likely be supplemented by subsequent, more extensive
modeling and ambient analyses performed by or for those implementing the modeling/analysis
protocol discussed in Section 12.0.
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castellano: DISPER CUSTIC DESCAR RADIA italiano:
deutsch: DIS CUS DES RAD
castellano: DIS CUS DES RAD english: DIS CUS DES RAD
português: DIS CUS DES RAD italiano: DIS CUS DES RAD
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