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Table of Contents - The Atmospheric Studies Group at TRC

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Section 8: CALMET Model Files<br />

<strong>Table</strong> 8-4 (Continued)<br />

Input <strong>Group</strong> 5 - Wind Field Options and Parameters<br />

Variable Type Description Default Value<br />

ICALM integer Control variable for extrapol<strong>at</strong>ion <strong>of</strong> calm<br />

surface winds to layers al<strong>of</strong>t. (0 = do not<br />

extrapol<strong>at</strong>e calms, 1 = extrapol<strong>at</strong>e calms)<br />

BIAS real array Layer-dependent biases modifying the weights<br />

<strong>of</strong> surface and upper air st<strong>at</strong>ions. NZ values<br />

must be entered. (-1 BIAS +1) Neg<strong>at</strong>ive<br />

BIAS reduces the weight <strong>of</strong> upper air st<strong>at</strong>ions<br />

(e.g., BIAS = -0.1 reduces their weight by<br />

10%). Positive BIAS reduces the weight <strong>of</strong><br />

surface st<strong>at</strong>ions (e.g., BIAS = 0.2 reduces their<br />

weight by 20%). Zero BIAS leaves weights<br />

unchanged.<br />

IPROG integer Control variable determining if gridded<br />

prognostic model field winds are used as input.<br />

0 = No, (IWFCOD = 0 or 1)<br />

1 = Yes, use CSUMM winds as Step 1 field,<br />

(IWFCOD=0)<br />

2 = Yes, use CSUMM winds as initial guess<br />

field (IWFCOD=1)<br />

3 = Yes, use winds from MM4.DAT file as<br />

Step 1 field (IWFCOD=0)<br />

4 = Yes, use winds from MM4.DAT file as<br />

initial guess field (IWFCOD=1)<br />

5 = Yes, use winds from MM4.DAT file as<br />

observ<strong>at</strong>ions (IWFCOD=0 or 1)<br />

13 = Yes, use winds from MM5.DAT file as<br />

Step 1 field (IWFCOD=0)<br />

14 = Yes, use winds from MM5.DAT file as<br />

initial guess field (IWFCOD=1)<br />

15 = Yes, use winds from MM5.DAT file as<br />

observ<strong>at</strong>ions (IWFCOD=0 or 1)<br />

0<br />

NZ*0<br />

0<br />

(Input <strong>Group</strong> 5 Continued)<br />

8-42

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