SIM_ADJUST -- A computer code that adjusts simulated equivalents for observations or predictions
Ground Water Modeling Investigation Report
GWMI 2008-01
By: Eileen P. Poeter and Mary C. Hill
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Abstract
This report documents the SIM_ADJUST computer code. SIM_ADJUST surmounts an obstacle that is sometimes encountered when using universal model analysis computer codes such as UCODE_2005 (Poeter and others, 2005), PEST (Doherty, 2004), and OSTRICH (Matott, 2005; Fredrick and others (2007). These codes often read simulated equivalents from a list in a file produced by a process model such as MODFLOW that represents a system of interest. At times values needed by the universal code are missing or assigned default values because the process model could not produce a useful solution. SIM_ADJUST can be used to (1) read a file that lists expected observation or prediction names and possible alternatives for the simulated values; (2) read a file produced by a process model that contains space or tab delimited columns, including a column of simulated values and a column of related observation or prediction names; (3) identify observations or predictions that have been omitted or assigned a default value by the process model; and (4) produce an adjusted file that contains a column of simulated values and a column of associated observation or prediction names. The user may provide alternatives that are constant values or that are alternative simulated values. The user may also provide a sequence of alternatives. For example, the heads from a series of cells may be specified to ensure that a meaningful value is available to compare with an observation located in a cell that may become dry. SIM_ADJUST is constructed using modules from the JUPITER API, and is intended for use on any computer operating system. SIM_ADJUST consists of algorithms programmed in Fortran90, which efficiently performs numerical calculations.
Suggested Citation
Poeter, E.P., Hill, M.C., 2008, SIM_ADJUST -- A computer code that adjusts simulated equivalents for observations or predictions: Ground Water Modeling Investigation Report GWMI 2008-01, no. 2008-01, vi, 28 p.
| Publication type | Report |
|---|---|
| Publication Subtype | Organization Series |
| Title | SIM_ADJUST -- A computer code that adjusts simulated equivalents for observations or predictions |
| Series title | Ground Water Modeling Investigation Report |
| Series number | GWMI 2008-01 |
| Issue | 2008-01 |
| Year Published | 2008 |
| Language | English |
| Publisher | International Ground Water Modeling Center |
| Publisher location | Golden, CO |
| Contributing office(s) | National Research Program - Central Region |
| Description | vi, 28 p. |
| Country | United States |