The ANNUAL secondary keyword indicates that averages are to be calculated for an annual STAR summary. This differs from the PERIOD secondary keyword, which refers to an average calculated for all STAR summaries included in the data file. The PERIOD keyword may be used to calculate the annual average from a data file consisting of STAR summaries for each of the four seasons or for each of the twelve months. Thus, the ANNUAL and PERIOD keywords cannot both be present on the AVERTIME card. The PERIOD average cannot be used when monthly STARs are included with seasonal or quarterly STARs in the same data file.
The following card can be used to calculate the averages for each of the four seasons and for the annual period from a data file consisting of five STAR summaries, one for each season and one for the annual period:
whereas the following card will calculate the averages for each of the four seasons, and will then rewind the meteorology file and calculate the averages for the annual period from the four seasonal STAR summaries:
The AVERTIME keyword works in conjunction with the STARDATA keyword on the ME pathway to control which averaging periods are calculated. Both of these keywords recognize the same set of secondary keywords. The CO AVERTIME card defines which averaging periods are to be calculated, and is a mandatory keyword. The ME STARDATA card defines which STAR summaries are included in the data file. The STARDATA keyword is optional, unless the AVERTIME card includes only the PERIOD average, in which case the STARDATA keyword is mandatory in order to define which STAR summaries are included in the period average. If the ME STARDATA keyword is omitted, then the ISCLT model assumes that the meteorological data file contains only the STAR summaries identified on the CO AVERTIME card.
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APLICACIONES 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