Ecoinformatics Problems of Global Climate Change - New Ecoinformatics Tools in Environmental Science: Applications and Decision-making - page 459

Fig. 5.21 Procedure of topological referencing of the territory to the ESPAP data base

components

8
<

A forest,

B grass,

C agriculture crops ð Þ;

D plough land,

E highway,

a ij ¼

: F boggy locality,

G urban territory,

H industrial zone,

J fruit trees,

I agricultural vegetation others ð Þ;

8
<
:

A no pollution sources

B pollution sources of the type ``B''

a ij ¼

C pollution sources of the type ``C''

D other type of pollution sources

Matrices A 4 and A 8 contain geographic information about the territory levels
with respect to the sea level and data on rain rate, respectively. The A 5 identi er

gives the distribution of population density in the region. The A 6 and A 7 structures
determine mean statistical data on wind speed and direction over the territory

. All
information is prescribed for a certain time period and, hence, the ESPAP database
stores the sets of matrices {A ij }, marked with the respective time interval. Each
element of these matrix structures is hierarchically decoded by levels but not
necessarily in the same way. The A 3 matrix takes into account the types of pollution
sources enumerated in Table 5.19 . For a better familiarization of ESPAP, the
database foresees the possibilities to identify the atmospheric pollution sources with

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