TRIP is an acronym of "Total Runoff Integrating Pathways".
TRIP 2 is the latest version (version 2.0) of the TRIP model [Oki and Sud, 1998]. TRIP 2 can help to isolate the river basins, inter-basin translation of water through river channels, as well as collect and route runoff to the river mouth(s).
The main differences between TRIP 2 and TRIP can be listed in the following table:
|Calculation Approach||constant velocity||variable velocity|
|Ground Water scheme||NO||YES|
|Resolution of Input Runoff and flow direction map||must be the same||can be different|
|Extractability to run for a small region of interest||NO||YES|
|Required maps||flow direction map, river sequence map||flow direction map, river sequence map, elevation map|
|Output variables||River discharge [kg/s], river storage [kg]||River discharge [kg/s], river storage [kg], river depth [m], river velocity [m/s], ground water storage [kg], manning coefficients [-], river width [m]|
|Parameters||constant velocity value, river meandering value||ground water time delay constant, river meandering value|
Reference: A paper of TRIP 2 is under construction and will be referred in this manual soon.