Krasnodar GRES Project Volume I11 Environmental Assessment

During rainfall and fog the
western direction, probably,
in from the north-west.
wind blows in a predominantly northern or north-
due to origination of the fronts and cyclones coming
During stable and neutral states of the atmosphere, prevailing winds are of south-
eastern direction, and during unstable states of the atmosphere the prevailing
winds are those of northern direction.
Actual observations at the Perepravnaya metlstn proved wind speeds to be
somewhat lower than those observed at Labinsk meteorological stations.
Correlation of wind speeds at Labinsk meteorological station and other
surrounding stations with those at Perepravnaya meteorological station appears to
be rather weak (correlation ratio of less than 0.6). Therefore, the observed wind
speeds at the Krasnodar GRES site cannot be adjusted to long-term values using
correlation methodology. Thus, mean values for the 5-year period (1 981 -1 986) at
the Perepravnaya meteorological station are used as mean long-term wind speeds
at the Krasnodar GRES site. Wind roses are included as Appendices 1-7.
Mean monthly wind speed values at Labinsk meteorological station for the period
of 1981-1986 are close to the mean long-term values which justifies mean long-
term values for the Perepravnaya met station being based on these mean monthly
values (see Table 4.9).
1 2 3 4 5
2.1 2.3 2.4 2.0 1.5
Table 4.9
Mean Wind Speeds (mlsec)
At Perepravnaya metlstn
Months
6
1.1
Maximum mean wind speeds were observed with eastern and western winds.
7
1.5
Year
The observations at Perepravnaya met station proved maximum wind speed
values to be less than and close to those observed at the Labinsk meteorological
station. Therefore, maximum wind speed values of different probabilities for the
two sites were based on the data of long-term observations at the Labinsk
meteorological station (see Table 4.10).
8
1.8
9
1.7
10
2.1
11
1.9
12
2.0
1.9
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