Veðráttan - 02.12.1975, Síða 19

1975
VEÐRÁTTAN
Ársyfirlit
Jaðar. Hiti. Temperature Rakastig %, . Rel. humidity %
Kl. Hour 3 6 9 12 15 18 21 24 MSlt. Mcan 3 6 9 12 15 18 21 24 Mðlt.
I -3.9 -4.1 -3.9 -4.1 -3.9 -4.1 -4.1 -3.9 -4.0 66
II 1.8 1.9 1.4 1.9 2.3 2.3 1.8 1.9 1.9 —
III -1.7 -1.8 -1.5 -0.5 0.3 -0.5 -1.4 -1.3 -1.1
IV 0.1 -0.1 1.3 2.9 3.6 2.8 1.1 0.3 1.5 —• — 93 — — — 94 — —
V 3.2 3.1 6.0 8.2 8.7 7.8 6.0 4.1 5.9 — — 87 — — — 92 — —
VI 5.2 5.7 7.4 8.9 9.1 8.7 7.6 5.8 7.3 — — 76 — — — 80 — —
VII 7.7 7.8 9.5 11.1 11.9 11.6 10.0 8.5 9.8 — — 82 — — — 81 — —
VIII 9.2 9.2 10.5 11.7 12.9 12.3 10.3 9.3 10.7 — — 82 — — — 85 — —
IX 3.1 2.9 3.8 5.9 7.0 6.0 4.2 3.3 4.5 — — 89 —• — — 82 — —
X 5.1 4.9 5.2 6.6 7.2 6.1 5.4 5.3 5.7 — — 82 — — — 82 — —
XI 0.4 0.4 0.6 0.8 0.8 0.4 0.3 0.3 0.5
XII -2.3 -2.7 -2.6 -2.3 -2.5 -2.6 -2.7 -2.8 -2.6 — — — — — — — — —
Ár Year 2.3 2.3 3.1 4.3 4.8 4.2 3.2 2.6 3.3
Hæll. Hiti. Temperature Rakastig %. Rel. humidity %
Kl. Hour 3 6 9 12 15 18 21 24 MSlt. Mean 3 6 9 12 15 18 21 24 Mean
I -3.9 -3.8 -3.6 -3.3 -3.8 -3.7 -3.8 -3.3 -3.6
II 1.7 1.7 1.8 2.2 2.5 2.2 2.0 1.9 2.0
III -1.1 -1.2 -1.0 0.2 0.7 0.1 -0.5 -0.7 -0.4
IV 0.6 0.5 1.3 3.7 4.1 3.2 2.0 0.5 2.0
V 3.3 3.7 5.8 8.0 8.8 8.1 6.4 4.3 6.1
VI 6.0 6.2 7.7 9.4 9.5 9.2 8.3 6.7 7.9
VII 8.2 8.4 9.3 11.2 11.9 11.3 10.1 8.8 9.9
VIII 9.3 8.9 10.0 11.8 12.8 12.0 10.4 9.6 10.6
IX 3.7 3.4 3.9 6.1 7.4 6.5 4.5 3.7 4.9
X 5.1 5.3 5.3 6.4 7.4 6.5 5.6 5.6 5.9 —
XI 0.8 0.7 0.8 1.0 1.0 0.7 0.3 0.5 0.7 —
XII -1.8 -2.1 -1.9 -1.9 -1.9 -2.2 -2.5 -2.3 -2.1
Ár Year 2.7 2.6 3.3 4.6 5.0 4.5 3.6 3.0 3.6
Keflavík. Hiti. Temperature Bakastig %. Rel. humidity %
Kl. Hour 3 6 9 12 15 18 21 24 MSlt. Mean 3 6 9 12 15 18 21 24 MSlt. Mean
I -2.5 -2.4 -2.1 -2.3 -2.1 -2.4 -2.6 -2.4 -2.4 80 79 78 77 79 79 77 78 78
II 2.7 2.7 2.9 3.2 3.6 3.4 3.3 2.9 3.1 88 87 88 87 85 89 90 89 88
III 0.5 0.5 0.5 1.2 1.8 1.5 0.8 0.7 0.9 89 88 87 85 83 85 88 89 87
IV 1.6 1.4 2.3 3.5 4.1 3.6 2.4 1.7 2.6 90 91 86 82 79 82 86 92 86
V 4.5 4.5 5.6 6.7 7.4 6.9 6.0 5.0 5.8 90 90 85 80 78 79 85 89 84
VI 6.2 6.4 7.5 8.4 8.8 8.9 8.1 7.1 7.7 91 90 83 79 77 77 82 87 83
VII 8.0 8.0 9.0 9.8 10.5 10.3 9.3 8.5 9.2 92 91 87 82 77 79 86 90 85
VIII 8.9 8.9 9.7 10.6 11.0 11.1 10.0 9.3 9.9 94 93 89 87 83 85 91 92 89
IX 4.9 4.5 5.2 6.8 7.2 7.0 5.7 5.1 5.8 88 86 84 76 74 77 83 85 81
X 6.0 6.1 6.1 7.1 7.5 7.0 6.2 6.3 6.5 91 90 91 87 85 87 92 92 89
XI 2.2 2.3 2.1 2.3 2.8 2.7 2.1 2.0 2.3 89 89 93 88 86 83 86 90 88
XII 0.1 0.2 0.6 0.5 0.3 0.0 -0.1 0.0 0.2 85 84 83 84 84 80 85 87 84
Ár Year 3.6 3.6 4.1 4.8 5.2 5.0 4.3 3.8 4.3 89 88 86 83 81 82 86 88 85
Meðalrakastig á hverjum athugunartima er reiknað með þvi að taka hiutfallið mllil meðalraka-
hrýstings og mettunarþrýstings við meðalhitastig athugunartímans. Rakastig mánaðarlns er á sama
hátt miðað við hlutfall milli meðalrakaþrýstings í mánuðinum og mettunarþrýstlngs við meðalhita
mánaðarins. Ársmeðaltöl eru bein meðaltöl af rakastigum mánaðanna.
Relative humidity at Jixed hours and mean monthly values are computed according to the foi ■
mula U = e/em ■ 100 where e and em stand for mean vapour pressure and saturation vapour pres-
sure at the respective mean temperature. The yearly mean ts arithmetic mean of the monthly values
for relative humidity.
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