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The cucropco DMI uses a control file to define sub-area and time period parameters for model data. The <br />parameters are placed in a data structure and passed to a low level DMI. The low level DMI queries the <br />database and returns requested data to the cucropco DMI. The data are written to formatted data files <br />used as input for the CU Model. <br />5.1 cucropco DMI Inputs <br />The DMI is passed the name of a control file defining the sub-area and time parameters selected by the <br />user. This file is read by the DMI as it builds the low-level DMI input data structure. Control files have <br />?.ctl? as a suffix. For more information about the ?.ctl? file format, see the man page for cu_ctl. <br />Area and time parameters: <br />? A list of spatial identifiers describing the specified sub-area. (county name, water district number, <br />hydrologic unit number, combination [county, hydrologic unit], combination [water district, id], or <br />Location Number [geoloc_num]). <br />? The begin year for the model run. <br />? The end year for the model run (>= begin year). <br />5.2 cucropco DMI Outputs <br />This DMI generates two files based on the methods used in the CU model. The output files have the <br />same name as the control file except for the file name suffix. Files having ?.kbc? as a suffix, contain data <br />formatted for Blaney-Criddle. Files having ?.kpm? as a suffix, contain data formatted for Penman- <br />Monteith. For more information about the file formats, see the man pages for cu_kbc and cu_kpm. <br />Where data are not available, the null indicator is used. <br />Data to be returned by the DMI, for files formatted for Blaney-Criddle (?.kbc? as a suffix): <br />? <br />number of crop types in the specified sub-area having a method of: ?Blaney_Criddle? <br />? <br />Data describing each crop type: <br />? <br />crop number <br />? <br />crop name <br />? <br />Blaney-Criddle coefficient by day of the year for perennials or percent of growing season for annuals <br />Files formatted for Penman-Monteith (?.kpm? as a suffix): <br />number of crop types in the specified sub-area having one or more method of: ?Mean_Alfalfa?, <br />?Mean_Grass?, ?Ref_Alfalfa?, or ?Ref_Grass? <br />Data describing each crop type: <br />? crop number <br />? crop name <br />For each crop type/method combination: <br />? <br />method name <br />? <br />method coefficients by days after planting <br />7 <br />11.29.96 2.09-18 IDS/CSU <br />