Any PERIOD or ANNUAL averages calculated by the model will apply only to the period of data actually processed. Therefore, if someone wanted to calculate a six‑month average, they could select PERIOD averages on the CO AVERTIME card, and then specify the period as follows:
for the period January 1, 1987 through June 30, 1987. The difference between the PERIOD and ANNUAL averages in the Short Term model is described in Section 184.108.40.206.
The syntax and type for the DAYRANGE keyword are summarized below:
ME DAYRANGE Range1 Range2 Range3 ... Rangen
where the Range parameters specify particular days or ranges of days to process. The days may be specified as individual days (e.g. 1 2 3 4 5) or as a range of days (e.g. 1‑5). The user also has the option of specifying Julian day numbers, from 1 to 365 (366 for leap years), or specifying month and day (e.g., 1/31 for January 31). Any combination of these may also be used. For example the following card will tell the model to process the days from January 1 (Julian day 1) through January 31 (1/31):
The DAYRANGE keyword is also repeatable, so that as many cards as needed may be included in the ME pathway.
As with the STARTEND keyword, any PERIOD or ANNUAL averages calculated by the model will apply only to the period of data actually processed. If the STARTEND keyword is also used, then only those days selected on the DAYRANGE cards that fall within the period from the start date to the end date will be processed. Thus, if the ME pathway included the following two cards:
then no data would be processed, since the days 1 through 31 fall outside the period 2/1 to 12/31.
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castellano: DIS CUS DES RAD english: DIS CUS DES RAD
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