The following preset values are used to indicate missing data:

IKST             0

AWS             ‑9

ATA            ‑99

AFV            ‑99

AFVR           ‑99

AZI           ‑999

F.3 STAR SUMMARY JOINT FREQUENCY DISTRIBUTIONS

        For the ISC Long Term dispersion model, the input file describing the meteorological conditions is a joint frequency distribution.  These frequency distributions are called STAR summaries for STability ARray.  The frequency distribution is constructed using 16 wind direction sectors, with the first 22.5 sector centered on winds from the North (increasing clockwise), six wind speed classes and six stability classes. The wind speed classes are 0‑3, 3‑6, 6‑10, 10‑16, 16‑21 and >21 kts.  The Pasquill stability categories for the ISCLT dispersion model are grouped into classes as,

 

        Pasquill

Class   category         Remarks

  1        A        Very unstable conditions

  2        B        Moderately unstable conditions

  3        C        Slightly unstable conditions

  4        D        Neutral conditions

  5        E        Slightly stable conditions

  6        F        Very stable conditions

 

 

301 - 302 - 303 - 304 - 305 - 306 - 307 - 308 - 309 - 310 - 311 - 312 - 313 - 314 - 315 - 316 - 317 - 318 - 319 - 320 - 321 - 322 - 323 - 324 - 325 - 326 - 327 - 328 - 329 - 330 - 331 - 332 - 333 - 334 - 335 - 336 - 337 - 338 - 339 - 340 - 341 - 342 - 343 - 344 - 345 - 346 - 347 - 348 - 349 - 350

 

 

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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