Geoscience Reference
In-Depth Information
Fig. 1 Catchment of Lake
˙
arnowiec
The average multiyear precipitation over the catchment is estimated as 629 mm,
which is very close to the average precipitation for the whole area of Poland. The
lake catchment is shown in Fig.
1
.
Design and operation of the nuclear power plant required several meteorological
data. Three climatologic stations were established (Fig.
1
). The first is close to the
place of nuclear plant, the second at the end of the lake on its eastern shore, and the
third is at the sea shore near the outflow of Pia´nica River to the sea. The following
measurements were carried out at these stations:
l
Wind speed and direction
l
Air temperatures and humidity
l
Solar radiation and albedo
l
Evaporation from lake surface
4 Thermal Regime of the Lake in Natural Conditions
Thermal regime was one of the most important lake characteristics. Water tem-
peratures were measured on the shore stations of the lake and also in several
verticals during monthly expeditions. Thirty-seven verticals were established in
longitudinal and perpendicular cross sections of the lake. In deep verticals,
