Modelling tool capability overview
Revision as of 13:23, 27 April 2021 by Julia Glenday (talk | contribs)
| Characteristic | WRSM-Pitman | SPATSIM Pitman | ACRU | SWAT | MIKE-SHE |
|---|---|---|---|---|---|
| Developed in South Africa | yes | yes | yes | no | no |
| Intended spatial scale (catchment or model area) | Local to regional: no suggested min-max model size | Local to regional: 10-10,000’s of km2, more typical: 100-1,000’s km2 | Field to regional: no suggested min-max model size | Field to regional: no suggested min-max model size | Field to regional: no suggested min-max model size |
| Spatial discretisation | Modules (runoff (subcat), special areas, channel, reservoir) + routes | Subcatchments + limited internal sub-area types | HRUs within subcatchments | HRUs within subcatchments | Fully distributed (gridded) OR combinations of grids and zones for different process calculations within subcatchments (if align all process zones, would act like HRUs) |
| Subcat < 1,000 km2 | Subcat 5-50 km2; HRUs < 30km2 | ||||
| Timestep | Monthly* | Monthly* | Daily | Daily, subdaily | Daily, subdaily, |
| Intended modelling applications (as documented) | |||||
| Water balance estimation | yes | yes | yes | yes | yes |
| Design hydrology (flood peaks) | yes | yes | yes | ||
| Supply planning (general) | yes | yes | yes | yes | yes |
| Reservoir yield | yes | yes | yes | yes | yes |
| Irrigation planning | yes | yes | yes | yes | |
| Groundwater recharge | yes | yes | yes | yes | yes |
| Groundwater-surface water (GW-SW) interactions & pumping impacts | yes | yes | yes | ||
| Land cover change impacts | yes | yes | yes | yes | yes |
| Climate change impacts | yes | yes | yes | yes | yes |
| Application limitations (as documented) | Not for peak flow, flood assessment, design hydrology | Not for peak flow, flood assessment, design hydrology | Not represent deep GW processes - not for GW pumping impact | Not represent deep GW processes | (None listed in documentation for system as whole, only for certain process options within it. The many options do steepen the learning curve for use.) |
| Specific development focuses particular to tool | Flexible network for tracking managed system transfers, GW-SW interaction, IAP & plantation forestry water use | Parsimony, Uncertainty assessment, GW-SW interaction | Land cover type representation, crop & irrigation detail, IAP & plantation forestry water use | Land cover type representation, crop & irrigation detail, coupling to GIS tools | Spatial discretisation & fine scale processes, GW-SW interaction, coupled hydraulic channel model & flooding processes |