The Arctic Environmental Problems - New Ecoinformatics Tools in Environmental Science: Applications and Decision-making - page 540

6.5.2 Model Description

Following the work of Krapivin (1995), the block-diagram of the AYRSSM (AYRS
simulation model) is represented in Fig. 6.12 . The AYRSSM has three levels of
blocks. A description of the AYRSSM blocks is given in Table 6.13 . The two
blocks of the first level realize the control for the models of different processes and

ensure various regimes of the computer experiments. The block HYD simulates the
river ' s flow with consideration of the correlation between the water regime and
ecological, topographical and synoptical parameters of the territory studied. The
block CON realizes the functions of the informational interface between the user
and the other AYRSSM blocks. The main function of CON is forming the database
and the identi cation of the AYRS elements. The four blocks of the second level

analyze the input information and synthesize the AYRSSM structure. The twenty
six blocks of the third level realize the concrete models and processes during the
computer experiment.
It is supposed that the AYRS watershed has an area

Ω
is determined by the spatial discretization of the AYRS surface with a uniform

Ω . The spatial structure of

Fig. 6.12 Structure of the AYRSSM. Description of the blocks are given in Table 6.13