![]() It’s also a set of MODULEs, those realize different process and correctly by the physical process, it can also undersatnd as: MODEL is a coupled complete process with some subprocesses (also possible only one process), in EDHM is a true function to simulation the designed model with definite methods. In the following section will show the meaning of hydrological processes and the mapped PROCESS. The PROCESS based on the hydrological processes, but sometimes a little different, due to the manual calculate factors in the lang time, some like evapotranspiration is a typical hydrological process, but in EDHM es is diveded into ReferenceET (reference evapotranspiration) and ActualET (actual evapotranspiration) two parts, because the most conceptual models calculate evapotranspiration in the two steps. In EDHM a PROCESS is the mapping from those hydrological processes in a digital from, at the same time it’s also the group (set) name of the some MODULEs those haven the same problem to solve and same aims, and a MODULE is the definite method of a PROCESS, it can also undersatnd as:įor example SNOW is PROCESS mapping the process that snow melting, accumulate and the state variety, SNOW.17 is then the true function that you can call in R, with the method by Andrson (Anderson 1973) forward. The water cycle of the Earth system and its variability at global, regional and local scales are influenced by a range of processes and mutual interactions, feedback mechanisms and as well as affected by anthropogenic processes. ![]() In EDHM the two mostly characters are modularization and vectorization-arithmetic, modularization focus on the coupling of the different modules of the hydrological processes, benefit by the modularization it’s very convenience to change the method of process, what means the editable model vectorization-arithmetic is very useful for the distributed hydrological model, it can greatly short the calculate time, especially when there are many grids (calculate units). 1.2 Basic Concept of Hydrological Cycle.
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