The Botany of Iceland - 01.12.1930, Side 18
8
H. M0LHOLM HANSEN
Table 1. Climatic Conditions in Iceland.
I. Berufjörður,East Iceland (64° 40‘N., 14° 15'\V., 18 m above sea level).
II. The Vestmannaeyjar, South Iceland (63° 26' N., 20° 18'W., 8 m ahove
sea level).
III. Stykkishólmur,West Iceland(65° 5' N., 22° 46' W., 11 m above sea level).
IV. Grímsey, North Iceland (66° 34' N., 18° 3' W., 2.5 m about sea level).
V. Mödrudalur, Highland Tracts (65° 19' N., 15° 15' W., about 480 m above
sea level).
The table has been compiled after Thoroddsen (the löwland stations),
Thorkelsson (the precipitation values for all stations), and Meteorolo-
gisk Aarbog Part II, 1886—1916 (the highland station). The lowland
stations comprise the years 1872—1906, the precipitation values cover
an additional number of j'ears.
I. Mean temperature of Year Januarj’ Februarj' j March j April May June July August Sep- tember j October No- vember De- cember
surface water in de- grees C° 3.2 0.7 0.4 0.5 1.5 3.1 4.8 6.0 fi.fi 6.2 4.3 2.6 1.3
Mean temperature of air 2.8 -r 1.2 -rl.5 -5-1.7 1.0 3.7 0.8 8.5 8.3 (>.(> 3.3 1.1 -7-1.0
Mean precipitation in
1174 128 99 77 83 73 «7 (>4 82 12(> 124 113 139
Number of days with
precipitation Number of days with 14« 15 14 12 11 10 9 10 10 13 13 14 15
50 8 8 9 5 3 0.4 » 0.1 0.5 3 (> 7
Number of daj’s with
fog Number of daj'S with 171 11 11 11 14 17 19 21 18 lfi 12 11 10
frost 158 24 ‘22 25 18 10 2 » 0.3 2 13 18 24
Number of daj's with gales 8 1 i 1 1 0.4 0.1 0.2 0.2 0.4 1 1 1
II. Mean temperature of
surface water in de- fi.í) 4.1 4.1 4.5 fi.l 7.7 9.5 10.9 10.8 9.1 <>.8 5.1 4.1
Mean temperature of 5.1 1.2
5.1 1.3 1.3 1.4 4.0 «.3 9.0 10.6 10.2 8.2 3.0
Mean precipitation in 135 138
mm 1354 150 123 118 94 80 80 77 7fi 139 144
Number of days with
precipitatiou Number of davs with 207 21 18 17 17 15 15 15 14 18 19 19 19
snow 44 9 8 8 4 1 0.2 » > 0.3 2 4 8
Number of daj's witb
f°g Number of davs witli 49 2 2 2 3 5 8 8 fi 5 4 2
frost 109 20 18 17 10 3 0.1 » 0.4 1 8 13 19
Number of days with gales 25 4 3 3 2 1 0.5 0.3 0.3 2 2 3 4