45 lines
2.2 KiB
Markdown
45 lines
2.2 KiB
Markdown
date: 2024.09.10
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# Simulator of Hydrologic Unstructured Domains (SHUD)
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# Relation with PIHM family
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## SHUD v1.0 (2019.12)
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MODIFICATIONS/ADDITIONS in SHUD V1.0 from previous PIHM family.
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0. Change the language and structure of code from C to C++.
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1. Update the CVODE from v2.2 to v5.0.
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2. Support OpenMP Parrallel computing.
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3. Change the input/output format. Check the Manual of SHUD on github.
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4. Change the structure of River.
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5. The functions to handle the time-series data, including forcing, LAI,
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Roughness Length, Boundary Condition, Melting factor.
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6. Lake Module is added into the hydrological process.
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## SHUD v2.0 (2022.04)
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MODIFICATIONS/ADDITIONS from v1.0
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1. Update to SUNDIALS 6.x
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2. The units of forcing input.
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1. Forcing data: Precipitation (mm/day), Temperature (C), Windspeed (m/s), Radiation (w/m2), Relative Humidity (0~1), Pressure (kPa).
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2. Landcover parameters: Rough (Manning's Roughness) from [day m^{1/3}] to [s m^{1/3}].
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3. River parameters: Rough (Manning's Roughness) from [day m^{1/3}] to [s m^{1/3}].
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3. Add the Bucket Lake model. Water balance of a lake is: $ ds/dt = P + Q_surf + Q_sub + R_in - R_out - E $
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4. Change of the names of inputfile .sp.rivseg(v2.0), instead of .sp.rivchn (v1.0)
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5. The calculation of ET, particularly the Potential Evapotranspiration from Pennman-Monteith Equation.
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6. More calibration parameters are open now. Total number is 38 or more.
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7. Format of files:
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1. The number of columns of *.sp.att* file to 9 columns, that is "INDEX SOIL GEOL LC FORC MF BC SS iLake"
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2. Three table exist in the *.sp.riv* file: ggggRiver, parameter, points. Head of three tables are: **River**(Index Down Type Slope Length BC), **Parameters**(Index Depth BankSlope Width Sinuosity Manning Cwr KsatH BedThick), **Points**(From.x From.y From.z To.x To.y To.z)
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3. Change of the *.cfg.ic* file format, since the initial condition for lake stage is added. Three table (v2.0) (element, river reach and lake) exist within the file, instead of two tables (v1.0).
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8. Temporary permafrost parameterization scheme is added; yet, the testing and validation is on the track.
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9. Temperature decreases as elevation increases, dT/dz = 0.00065 Adiabatic Lapse Rate 6.5 [$K/km$]
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99. Lots of bugs are fixed.
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