The Arctic Environmental Problems - New Ecoinformatics Tools in Environmental Science: Applications and Decision-making - page 572

Fig. 6.25 The conceptual
structure of the model of the
organic matter cycle in the
ice-covered sea

process consists in the variation of coef xed by the OSE

model user. The quality criterion is formulated by the user proceeding also from the
existing experimental data or from the other consideration. Service block of the
OSE model has a set of such possibilities. The user can demand to minimize the
divergence between his data about some characteristic of OSE and its model esti-
mation. Spectrum of such parameters spreads to main individual and integral
elements of OSE.
At the second tier, the model adaptation process is continued by increasing the
precision of sub-set X 2 . The quality criterion of this process is based on the
improvement of model quality reached during the

cient values in the ranges

first stage of adaptation process.
Thus, the simulation procedure of the SMOSE is a continuous process of model
adaptation via the coefficient changes or trophical graph modification. Really there
is a set of models {A i }. This set is formed with the sorting out of model parameters.
Every model A i is characterized by the quality level Qi. i . Complete model A *

is

formed as the limit of above models set. The finishing of adaptation procedure

nition of quality criterion Q * and on the values Q Q i

depends on the user ' sde j j .

Model A * ensures the min
i

Q Q i

j j . It is believed that

Z

1
h 1 r

Q i ¼ D 2 t ; u; k; z ð Þ d u d k dz :

ð u;k; z Þ X

Value of Q * (= 20 g/m 3 ) is estimated at the time t * (middle of summer) as average
concentration of phytoplankton biomass at the top layer with depth of h 1 (= 100 m).
Simulations of the OSE offer the possibility for studying various aspects of how
the OSE functions. Below there are some simulation results received under the
values of OSE parameters. Speci

cally, the present status of the OSE is of great
interest in order to understand the role of anthropogenic in uence on it. According

to the common theory of complex systems, a dynamic system is in the

fl

' living state '