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<br />OG~J(H <br /> <br />HYDROLOGIC MODELS INVENTORY <br /> <br />EVALUATION FORM <br /> <br />NAME OF MODEL: An interactive package of programs for estimating consumptive <br />use: <br /> <br />MAPSTA <br />ETKNOW <br />ETBC, ETJH, ETPEN <br />ETPLOT <br /> <br />FUNCTION: Interactive Software for Estimating Evapotranspiration <br /> <br />AGENCY & OFFICE: USBR - Denver Office - Water Resources Section (Software <br />will eventually be supported by the Agricultural Engineering Department, <br />Oklahoma State University, Stillwater, Oklahoma) <br /> <br />/: <br />.1 <br />'I <br />I, <br />il <br /> <br />TECHNICAL CONTACT: Eldon Johns (D5752) 303-236-38l0 <br />FTS 776-3810 <br />Ronald L. Elliott 405-744-8423 <br /> <br />MACHINE COMPATIBILITY: 386 series Personal Computers <br /> <br />DOCUMENTATION:. Self documenting. References in various ASCE (American <br />Society of Civil Engineers) and ASAE (American Society of Agricultural <br />Engineers) papers. These include: "Estimating Evapotranspiration With a <br />Knowledge-Based System" by R.L. Elliott, E.L. Johns and P.A. Weghorst, <br />Paper Number 897575 presented at the International Winter Meeting of ASAE, <br />New Orleans, December 12-15, 1989 and "An Interactive Computer System for <br />Estimating Monthly Evapotranspiration" by R.L. Elliott, E.L. Johns and <br />P.A. Weghorst in the Proceedings of the 1990 National Conference on Irrigation <br />and Drainage, Durango, COlorado, ASCE. <br /> <br />SPATIAL PRECISION: point estimates based on weather station locations. <br /> <br />TEMPORAL PRECISION: Monthly <br /> <br />OVERVIEW OF CAPABILITIES, ASSUMPTIONS: Displays of station location, monthly <br />computation of consumptive use by crops (ultimately by three methods although <br />only the Blaney-Criddle is presently available), plotting of consumptive use <br />estimates. Assumptions vary depending on method used. <br /> <br />STRENGTHS: <br />facilitate <br /> <br />User friendly, interactive <br />the package's application. <br /> <br />operation. <br /> <br />Graphical capabilities <br /> <br />WEAKNESSES: In developmental stage. <br />various modules. ETJH (Jensen-Haise) <br /> <br />Improved capabilities are needed for <br />and ETPEN (Penman) need to be developed. <br /> <br />INPUT REQUIREMENTS: Climate and related data including temperature, <br />precipitation, solar radiation, humidity, and crop phenology. <br /> <br />OUTPUT PRODUCED: Monthly evapotranspiration estimates for crops by <br />(ultimately) three different predictive methods. Selected plots of input and <br />output data. <br /> <br />1-6 <br />