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Major Changes in Version 3 Pre-Processing Programs |
Version 3 MM5 Modeling System At A Glance3. Version 3 Date String The new header and modeling system have eliminated the use of the 8-digit MDATE (yymmddhh) representation of time that is a standard part of the previous MM systems, primarily to be Y2K compliant. In its place is a 19- or 24-character date string, referred to as CDATE in the model, of the form "yyyy-mm-dd_hh:mm:ss.xxxx" where the last 5 characters are optional and represent ten thousandths of a second if such accuracy is needed. For example, the MDATE value of 99061812 is now 1999-06-18_12:00:00.0000 This allows for accurate and compact representations of the time that can easily be converted to integers by standard Fortran read statements. The charater string representation of date also allows the modeling system programs to manipulate output files at time intervals less than an hour. For example, programs Interp and Graph can now process and plot output from the model at time intervals down to seconds.
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