Fróðskaparrit - 01.01.1996, Side 86

90
CLIMATIC CHANGES AND FAROESE AGRICULTURE
hindered by this excess of precipitation
Hvalvík (Streymoy, and also by the relative
low temperature.
Data for Royndarstøðin
At the Agricultural Research Station,
Royndarstøðin, in Kollafjørður, the follow-
ing data have been collected every day at
8:00 hours since 1988:
Precipitation - for the previous 24 hours.
Minimum and maximum temperature for the previous
24 hours.
- Average temperature for the previous 24 hours (
day and night) is calculated as minimum + maximum
temp. devided by 2.
The data shows that the mean annual pre-
cipitation is 2.750 mm and the mean annu-
al temperature is 6,5 °C for the period 1988
- 1995.
The variations in temperature and pre-
cipitation over the years are shown in fig-
ures 1 and 2. The years 1993 and 1994 are
shown separate, since theese years stand
out from the long-term average. The tem-
perature sums (day x degree) do not vary
much over the years (normally between
1.400 - 1.500 degree-days, with a maxi-
mum in 1988 of 1.576 and a minimum in
1993 with 1.306 degree-days).
These data (degree-days) indicate that
cultivation of many commercial crops -
like maize, wheat, sugarbets and others - is
not possible in the Faroes (Andersen,
1961). Others, however like grasses, pota-