Episodes that have a high probability of covering different

sets of meteorological conditions corresponding with high ozone

concentrations should be modeled. Clearly, a trained meteorologist

familiar with local and regional weather patterns should be

consulted in the selection process. Conditions resulting in

distinctly different source-receptor configurations should be the

prime consideration in distinguishing different meteorological

regimes. Generally, conditions reflecting both poorly defined wind

flow (stagnation) and better defined flow (transport) will need to

be included. It is important to coordinate episode selection with

those responsible for Modeling Protocols in nearby domains,

particularly when observed exceedances may result from

"overwhelming transport."7

The following approach is recommended for selecting episode

days for use in modeling:

1. Identify the meteorological regimes associated with highozone

episodes. The procedure recommended for

identifying meteorological regimes is described in

Appendix B.

2. Select candidate episode days for modeling from the

period from 1987 to the present time. Place each

candidate episode day in the appropriate meteorological

regime (see Appendix B).



n1101 - n1102 - n1103 - n1104 - n1105 - n1106 - n1107 - n1108 - n1109 - n1110 - n1111 - n1112 - n1113 - n1114 - n1115 - n1116 - n1117 - n1118 - n1119 - n1120 - n1121 - n1122 - n1123 - n1124 - n1125 - n1126 - n1127 - n1128 - n1129 - n1130 - n1131 - n1132 - n1133 - n1134 - n1135 - n1136 - n1137 - n1138 - n1139 - n1140 - n1141 - n1142 - n1143 - n1144 - n1145 - n1146 - n1147 - n1148 - n1149 - n1150


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