first interpolated in time, and then vertically
averaged through the layer from the grid point
mixing height to the selected level (e.g., 700
mb). The winds at grid point (i,j) are obtained
from the previous equation, with the summation
over rawinsonde stations instead of surface
stations. Only rawinsonde stations within a
'scan-radius' of the grid point are considered.
Level 1 winds are the layer average between the surface and the
Figure 2b - Wind Vector Plot for July 21, 1984, 1200 LST.
Level 2 winds are between the mixing depth and 700 mb.
Figures 2a and 2b are examples of the wind fields generated by
the MESOPUFF processor for July 21, 1984 at 1200 LST. The
effects of the 'scan-radius' and the influence of a deviant
surface station on the calculation of mixed layer average
(Level 1) winds can be seen in the vicinity of Richmond. There
are also some aberrant winds generated in the vicinity of
Philadelphia. It appears, however, that the model is
generating a sea breeze along the coastal areas. The Level 2
winds are generally fairly smooth and uniform.
The ARM3 takes a somewhat different approach to
calculating the wind field for the region of interest. The
ARM3 meteorological processor was designed to account for the
influence of terrain on the wind fields over a data sparse
area. The ARM3 processor computes a three dimensional wind
field. The ARM3 air quality model can use the vertical
velocities, generated by the meteorological processor, to
transport puffs. However, vertical velocities generated by
diagnostic wind models over complex terrain are highly suspect
and are not recommended for use in the air quality model.
Therefore, the remaining discussion will only pertain to the
formulation of the horizontal components of the wind, although
some of the procedures for calculating the vertical component
can influence the calculation of the horizontal components.
n1251 - n1252 - n1253 - n1254 - n1255 - n1256 - n1257 - n1258 - n1259 - n1260 - n1261 - n1262 - n1263 - n1264 - n1265 - n1266 - n1267 - n1268 - n1269 - n1270 - n1271 - n1272 - n1273 - n1274 - n1275 - n1276 - n1277 - n1278 - n1279 - n1280 - n1281 - n1282 - n1283 - n1284 - n1285 - n1286 - n1287 - n1288 - n1289 - n1290 - n1291 - n1292 - n1293 - n1294 - n1295 - n1296 - n1297 - n1298 - n1299 - n1300
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