formulations of gasoline and use of alternative fuels. Speciation
guidance for these fuels will be provided by the EPA Office of
Mobile Sources (OMS) through the appropriate EPA Regional Office.
It is recommended that local speciation profiles for pointsource
and area-source categories be used whenever feasible.
The Technical Committee should determine the appropriateness
of using local or national default speciation profiles.
Profiles used in the modeling demonstration must be
documented, and any changes assumed in profiles as the result
of control strategies must be identified and justified.
3.7.2 Spatial gridding of area sources
Area-source emission data, including motor vehicle emission
data, are often supplied on a county basis. Spatial allocation of
county-level emission estimates to grid cells is performed for each
identified area-source category; the allocation requires use of
surrogate distribution factors such as population distribution,
land use, and road type. The UAM EPS4 contains a program that uses
gridded surrogate factors to allocate county-level emissions data
to the grid cell size of the modeling domain.
n1151 n1152 - n1153 - n1154 - n1155 - n1156 - n1157 - n1158 - n1159 - n1160 - n1161 - n1162 - n1163 - n1164 - n1165 - n1166 - n1167 - n1168 - n1169 - n1170 - n1171 - n1172 - n1173 - n1174 - n1175 - n1176 - n1177 - n1178 - n1179 - n1180 - n1181 - n1182 - n1183 - n1184 - n1185 - n1186 - n1187 - n1188 - n1189 - n1190 - n1191 - n1192 - n1193 - n1194 - n1195 - n1196 - n1197 - n1198 - n1199 - n1200
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
français: DIS CUS DES RAD