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Figuren Pl. II. Vanddampenes Tryk 1876, viser den
observerede og den beregnede Curve. MF = + 0."""019.
Efter Formelen beregnes:
Minimum: — 0."""11. 3’* 50’" a.m.
— 0."""09, 10* 14m p.m.
,, -f 0.wm10, l’’ 50™ p.m.
Medium indtræffer: 8* 18™ a.m. og 7* 35’" p.m.
Amplitude: 0.""n24.
Den beregnede Curve ligner (lurven for den daglige
Variation af Vanddampenes Tryk paa Indlandsstationer
med sit secundære Minimum om Eftermiddagen. Dette
Minimum er ikke fremkommet ved nogen større
Vindhastighed, der paa den Tid af Dagen skulde have gjort det
psyclirometrisk bestemte Tryk af Vanddampene mindre, thi,
som Curven for Vindhastigheden i 1876. PI. III. viser, har
denne ogsaa et secundært Minimum omkring Kl. 2 Eftm.
The figure in Pl. II, Force of Vapour, 1876, shows
the observed and the computed curve. MF = + 0."""019.
From the formula were computed —
Maximum: -(- 0.™ml3, 4* 32"’ p.m.
„ -+ 0.™"11. 11* 39m a.m.
„ — 0.ram08, 0* 2m a.m.
The Mean occurs at 8* 18m a.m. and 7* 35™ p.m.
Total Range: 0.m’"24.
The computed curve resembles the curve for th,e
diurnal variation of the force of vapour at inland stations,
with a secondary minimum in the afternoon. This minimum
is not the result of any increase in the velocity of the wind,
which, at that time of the day, should have reduced the
psychrometrically determined force of the vapour; for, as
shown by the curve for the wind-velocity in 1876, PI. HI,
this velocity, too, has a secondary minimum about 2 p.m.
1877.
Den første Gruppe omfatter 19 Observationsdage i
den varme Strøm. Dagene ere de samme som de. der ere
benyttede til Luftens Temperatur, med Undtagelse af den
21de Juni. der ikke er medtaget her, fordi det vaade
Thermometer i flere Timer ikke havde været tilstrækkeligt vaadt.
1877.
The first group comprises 19 observation days in the
warm current. The davs were the same as those devoted"
to determining the temperature of the air, with the
exception of the 21st of June, which is not included here, since
the wet bulb during several hours on that day had not
been sufficiently supplied with water.
Den (on the) 16 Juni (of June) 1* a.m.. var Vanddampenes Tryk (the force of ra/pour was) 7.m’"4.
21 .. ,. ,. ’ ,. 5.""»3.
Forskjel (Difference) 2.mml: 5 — 0.m,"42 = c.
Den (on the) 22 Juni (of June) 1* a.m.. 23 var Vanddampenes Tryk (the force of vapour wi is) 5.mm4. 5.mm7.
Forskjel (Difference) — <).mm3:1 = — 0.mm30 = c.
Den (on the) 28 Juni (of June) 12* p.m., 30 var Vanddampenes Tryk (the force of vapour wt is) 4."""9. 7."""2.
Forskjel (Difference) — 2.""n3:2 = — 1.—15 = c.
Den (on the) 3 Juli (of July) V’ a.m.. » » 8 >• ,, var Vanddampenes Tryk (the fwce of vapour uk is) 7."""6. 6.-2.
Forskjel (Difference) 1 ."""4 :5 = 0."»»28 = c.
Den (on the) 16 Juli (of July) I* a.m.. var Vanddampenes Tryk (the force oj vapour was) 8."""1.
„ ,. 20 ,. ,. „ ,, 6.mm7.
Forskjel (Difference) 1 ."""4: 4 = 0."""35 = c.
Den (on the) 25 Juli (of July) 1* a.m.. var Vanddampenes Tryk (the force oj vapour was) (>."""7.
27 ,. „ „ 7.mm9.
Forskjel (Difference) — 1 ."""2:2=- 0."""60 = c.
For den hele Gruppe bliver c = + 0.fflm058.
Den gjennemsnitlige Fejl i Observationsklokkeslettet
ved Middag bliver — 2.m3.
For the whole group c = + 0.mm058.
The average error in the hour of observation at noon
— 2.m3.
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