i_Century is a model control system for the Century Soil Carbon model developed by the Natural Resource Ecology Laboratory at Colorado State University. It stores CENTURY input data in an Access database, feeds that data to CENTURY, runs CENTURY, and reads and stores the results.
CENTURY 4
Home Page at Colorado State
CENTURY 5 Home
Page at Colorado State
Operation Diagram
Download
For first install: Download both i_CENTURY.exe and the 20-record sample. Open the sample with the "File" | "Open" menu. Use "File" | "Configuration" to tell i_CENTURY where the CENTURY executable (centx.exe) is.
| Changes in this version:
2008-08-13: Updates for Century 4.5 and DAYCENT. [Control Records]: field "PSECOC" replaced by new fields "PSECOC1" and "PSECOC2". New fields "pH Shift Year", "Soil Warming Year", ""Soil Warming", "N Scalar Option", "N Scalar Year", "OMAD Scalar Year", "Climate Scalar Option", and "Climate Scalar Year" added. [Soil Layers]: New fields "Bulk Density", "Root Percent", "Fraction of Sand", "Fraction of Clay", "Organic Matter", "Soil Water Content", "Saturated Conductivity", and "pH". [Soils]: New fields "Fraction of Rock", "PRECRO", "FRACRO" added. [Trees]: New fields "trfrtcn (1)", "trfrtcn (2)", "trfrtcw (1)", "trfrtcw (2)", "maxnp", "kmrsp(1)", "kmrsp(2)", "fkmrspmx(1)", "fkmrspmx(2)", "fkmrspmx(3)", "fkmrspmx(4)", "fkmrspmx(5)", "no3pref(1)", "no3pref(2)", "tlaypg", "tmplff", and "tmplfs" added. [Crops]: New fields "prdx(1)4_5", "frtcindx", "frtc(4)", "frtc(5)", "cfrtcn(1)", "cfrtcn(2)", "cfrtcw(1)", "cfrtcw(2)", "kmrsp", "ckmrspmx(1)", "ckmrspmx(2)", "no3pref", "claypg", "tmpgerm", "ddbase", "tmpkill", "basetemp", "mnddhrv", and "mxddhrv" added. [Fertilizer]: New field "ninhib" added. [Fire]: Fields "fret(1,1)".."fret(3,4)" replace fields "fret(1)".."fret(3)", and new fields "fdfrem(3)" and "fdfrem(4)" added. [Site Data]: New fields "TIMSTEP", "USEXDRVRS", "SUBLIMSCALE", "REFLEC", "ALBEDO", "FSWCINIT", "DMPFLUX", "HOURS_RAIN", "DRAINLAG", "WATERTABLE(1)".."WATERTABLE(12)", added. [Events]: New field "Day" added. 2006-11-27: New screens added to "Edit" | "Edit Trees" to allow editing of all values from [Trees] table. Input variable help file "iCenturyHelp.csv" updated to match. |
Download i_CENTURY 2008-08-13 (.EXE only, requires CENTURY to be already present)
Download 20 record sample database 2008-08-13, compatible with "Century 4 Agricultural".
Download input variable help file 2008-08-13