Figure 1. Science process modules in Models-3 CMAQ. Independent processors are represented with
round rectangles and interface processes are shown with rectangular boxes. Typical science process
modules (in hexagon boxes) update the concentration field directly and the data-provider modules (e.g.,
Photolysis routine in a pentagon box) include routines to feed appropriate environmental input data to the
science process modules.
Figure 2. Driver module and its science process call sequence.
Figure 3. Grid-size dependent horizontal diffusivity used in CMAQ (estimated for different magnitude of
deformation, from 10-6 to 10-3 s-1).
Figure 4. Evolution of aerosol size distributions for the clear, urban, and hazy cases. Initial conditions of
Seigneur et al  are used.
Figure 5. Comparison of PinG modeled species concentrations for ozone (solid line), NOy (thick solid line)
and SO2 (long dash) versus observed plume concentrations obtained from a horizontal aircraft traverse
intercepting multiple point source plumes from Johnsonville (extreme left plume) and the Cumberland
plume (in the middle) near Nashville, Tennessee, 18:45 UTC, 7 July, 1995.
Figure 6. Scatterplot of daily maximum 8-hr average ozone concentrations (ppb) from continental U.S.
AIRS stations for the period June 15-July 16, 1999 versus comparable CMAQ model estimates. Solid
lines are 2:1 and 1:2 boundaries and dotted line is best fit to data.
Figure 7. Scatterplot of daily average PM2.5 concentrations (:g m-3) from continental U.S. monitoring
stations for the period June 15-July 16, 1999 versus comparable CMAQ model estimates. Results are
color-coded according to eastern or western U.S. Solid lines are 1:1 as well as 2:1 and 1:2.
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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