The Botany of Iceland - 01.12.1914, Side 97

PHYSICAL GEOGRAPHY
281
ture in the Vestmannaeyjar was — 7° C., at Berufjord — IIV20 C.,
on Grímsey — 1572° C. and in Mödrudalur —24V20 C.
The mean temperature for the whole island, according to Ihe
observations to hand, is 2V20 C., but the real temperalure is un-
doubtedly considerably lower, because only one station 011 the im-
mense ptateau was included. The mean temperature of the winter
on the north and east coasts ranges between -1° and —3V20 C.,
and of the summer between 6V2 and 8° C., of South Iceland the
mean temperature for the winter ranges between 0° and —2° C.,
and the summer temperature between 9 and 10°. The difference
between the summer and winter temperatures increases with the
distance from the sea, as shown in Fig. 26. The ditference is
greatest between the plateau and the Vestmannaeyjar. The mean
temperature for the year in Mödrudalur is —0.4° C., and in the
Vestmannaeyjar 5.3° C.; the mean summer temperature of Mödru-
dalur 8.4° C. and of Veslmannaeyjar 10.2° C.; and the winter tem-
perature of Mödrudalur — 7.2° C., and of Vestmannaeyjar 4- 1.2° C.;
thus the winter in Mödrudalur is 8° colder than in the Veslmanna-
eyjar. The south coast is tlie warmest part of the country, and in
the Vestmannaeyjar the mean temperature of none of the months
is below freezing point. The mean temperalure for the year on
the south coast is as follows:— Bjarnanes 3.7° C., Sandfell in Öræfi
4°, Evrarhakki 3.6°, Havnefjord 3.9° and Reykjavík 4.2°. The cli-
mate of the coast of Iceland is said to be mildest below Ejjafjöll
and in Mýrdalur, but no observations are to hand from these two
places.
Table IV. Account of the Air Temperature along the coasts, in the
interior districts, and on the plateau, according to the seasons.
Number of stations Winter Spring Summer Autumn } The year
The Vestmannaeyjar 1 1.2 4.1 10.2 5.5 5.3
South-west coast (Stykkisholm-Eyrarbakki) 3 —1.7 2.0 9.9 3.8 3.5
South-east coast (Sandfell-Berufjord) 4 —0.8 1.8 8.2 3.8 3.3
North-east coast (Skeggjastaðir-Grímsey).. 3 —3.0 —1.0 7.1 2.2 1.3
interior districts (with the exception of Mödrudalur) 5 - 3.5 0.4 9.0 2.3 2.1
lJlateau (Mödrudalur) 1 —7.2 —2.1 8.4 —0.7 —0.4
The whole island 17 —2.4 0.8 8.7 2.9 ‘2.5