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Vindens Hastighed.
Velocity of the Wind.
1876.
Som ovenfor, Side 5 og (3, nævnt, ere de efter
Observationerne beregnede Vindhastigheder fra 1876 ikke
corrige-rede for Fejlene i Anemometrets Registrering. Dette har
imidlertid ingen væsentlig Betydning for Bestemmelsen af
den daglige Periode, da Vindens Middel-Hastighed er 9.™8
pr. Secund, og Anemometercorrectionen ved denne
Hastighed kun er — 0.m03. De samme 31 Observationsdage ere
benyttede som ved de øvrige Elementer.
1876.
As stated above, pp. 5, 6, the wind-velocities in 1876
computed from the observations have not been corrected
for the errors in the registration of the anemometer. This,
however, has no real significance for the determination of
the diurnal period, the mean velocity of the wind having
been 9.’"8 per second, and the correction of the
anemometer for this velocity being only — 0.m03. The same
observation days, 31, as for the other elements.
Den (on the) 27 .luni (of June) 12Ap.m., var Vindens Hastighed (the velocity of the wind was) 6.’"3.
„ „ 8 Juli (of July) „ ,. ,, O.-O.
Forskjel (.Difference) 6.’"3:11 = 0.57 = c.
Den (on the) 16 Juli (of July) 12A p.m., var Vindens Hastighed (the velocity of the wind was) 10.m6.
26 „ ,. „ „ 4.™8.
Forskjel ( Difference) 5.m8 :10 = 0.58 = c.
Den (on the) 3 Aug. (of Aug.) 12A p.m., var Vindens Hastighed (the velocity of the wind was) 7."’7.
13 „ „ „ 3.m8.
Forskjel (Difference) 3."9:10 = 0.39 = c.
For den hele Gruppe bliver c = 0.52. || For the whole group c = rf- 0.52.
a. m.
Klokkeslet iA 2h 3’’ 4A 5’’ 6a 7A 8a 9’’ ioA nA i2A Hour.
Corr. Obs.media 9.48 9.50 9.33 9.55 9.71 9.76 10.03 9 95 10.00 10.29 10.14 9-97 Corr. obs. means.
Afv. fraDagsmedium—0.37—0.35—0.52—0.30 0.14 — 0.09 0.18 0.10 0.15 0.44 0.29 o. 12 Diff. from daily mean.
Beregnet Afvigelse—0.50—0.50—0.40—0.26 0.15—0.06 0.03 0.15 0.28 0.33 0.28 o. 15 Computed difference.
Forskjel:Obs. — Ber. 0.13 0.15—0.12 0.04 o.oi —0.03 0.15—0.05—0.13 o.ii o.01—0.03 Diff.: obs. comp.
p. m. ’
Corr. Obs.media 9.80 9.90 9.77 10.12 10.15 10.07 10.20 9.67 10.16 10.02 9.47 9.30 Corr. obs. means.
Afv. fraDagsmedium—0.05 0.05—0.08 0.27 0.30 0.22 0.35—0.18 0.31 0.17—0.38 -0.55 Diff. from daily mean.
Beregnet Afvigelse 0.03 0.00 0.07 0.18 0.25 0.26 0.22 0.17 0.09—0.03—0.20—0.38 Computed difference.
ForskjekObs.—Ber.—0.08 0.05—0.15 0.09 0.05—0.04 0.13—0.35 0.22 0.20 -0.18—0.17 Diff.: obs. — comp.
Formel (Formula): Wt = 9.»85 — 0.’"282 sin (62" 14.’9 + t) — 0.»206 sin (31° 45/1 + 2t)
— 0.m035 sin (150° 59’ + St) — 0."060 sin (9° 36’ + 4t).
Figuren Pl. III, Vindens Hastighed 1876, viser den
observerede og den beregnede Curve. MF= + 0.mll.
Af Formelen beregnes:
Maximum: -f-0."’33. 10A 3’" a.m.-,
„ + 0.™26, 5A 35™ p.m.;
Medium indtræffer: ’6A 36™ a.m., 1A 45m p.m. og 9A
46m p.m.
Amplitude: 0.’"85.
The figure in Pl. III, Velocity of the Wind, 1876,
shows the observed and the computed curve. MF = + 0ml 1.
From the formula were computed —
Minimum: —-0.m52, 1A 30m a.m.
,. 0.m00, 1A 45’" p.m.
The Mean occurs at 6A 36m a.m., at 1A 45’" p.m.,
and at 9A 46m p.m.
Total Range: 0.-85.
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