De norske Kyststationer fra Vardø til Skagerak ud- | 
vise samtlige et Minimum om Morgenen og et Maximum | 
om Eftermiddagen." Amplituden synes i de 3 Expeditions- | 
aar 1876—78 at have været lidt større end den af de 
-lengere Aarrækker fremgaaede. | 
| 
Man har nemlig: 
The Norwegian coast-stations, from Vardø to the 
Skagerak, exhibit all of them a minimum in the morning 
and a maximum in the afternoon! The amplitude of the 
variation on the three cruises af the Expedition (1876— 
1878) would appear to have been somewhat greater than is 
that derived from a longer series of years. 
We have namely — 
cor 3 DY EA DU EC DD DUE 
for Expedit.s Obs.dage: Norske Kyststationer: (for the obs. days on the Exped.: — Norw. coast-stations): — 0.18 + 0.14 + 0.03 
for de længere Aarrekker (for the longer series of years) 
— 0.10 + 0.06 + 0.04 
Forskjel: Reduction til normal (Difference; reduction to the normal values) ae 0.08 — 0.08 + 0.01 
Vilde man anvende disse Correctioner paa Resulta- 
terne fra Havet, fik man for dette Værdierne: 
—009 010 00 | 
der antyde en noget mindre Talværdi for saavel Morgenmini- 
mums som for Eftermiddagsmaximums Afvigelse fra Dagsmediet 
(en Formindskelse af respective 0.””07 og 0.””10 omtrent). 
Observationerne fra Færøerne og Islands Østkyst vise 
et Minimum om Morgenen og et Maximum om Aftenen. | 
Reduceres de ved Hjelp af Bergen og Christiansund til 20 | 
Aars, faar man 
— O05 —005 020 | 
altsaa den samme Række. 
Det fremgaar altsaa af disse Tal, at Barometrets dag- | 
lige Gang om Sommeren paa det norske Hav og paa de | 
tilgrændsende Kyster af Norge, Færøerne og Island har | 
sit Minimum om Morgenen og sit Maximum om Eftermid- | 
dagen eller om Aftenen. 
En anden Character har Fænomenet paa Fjordsta- 
tioner. som følgende Tabel viser. | 
Now, were these corrections applied to the results of 
the observations taken at sea, we should get the values 
= 009 0:10 — 0:01 
which indicate somewhat lower figures for the deviation of the 
morning minimum and the afternoon maximum from the daily 
mean (a reduction of about 0.””07 and 0.”"10 respectively). 
The observations from the Færoe Islands and the East 
Coast of Iceland show a minimum in the morning and a 
maximum in the evening. If they are reduced by means 
of the observations at Bergen and Christiansund to a series 
of 20 years, we get — 
018 —006 030 
accordingly the same series. 
Hence, it appears from these figures that the diurnal 
variation of the barometer during the summer months in 
the Norwegian Sea, as also on the adjacent coasts of Norway, 
the Færoe Islands, and Iceland, has its minimum in the 
morning and its maximum in the afternoon or evening. 
At the fjord-stations, the phenomenon assumes another 
character, as shown by the following Table: — 
Fjord-Stationer (Hjord-Stations) Aar (Year). 8 a.m. 2 p.m. 8 p.m. 9 p.m. 
Alten 10 1871—80 0.007 — 0.04” - 0.05 "nm 
Yttergen 7 68—76 + 0.16 — 0.10 — 0.07 
Flesje 10 69—80 ++ 0.18 — 0.12 — 0.07 
Locka Akureyri 6 74—79 + 0.08 — 0.23 + 0.14 
Stykkisholm 6 74—79 0.00 — 0.08 + 0.09 
Middel for de 3 norske Stationer er: 
LO O09 06% 
altsaa næsten de samme Tal, men med modsat Fortegn, 
som tilhøre de norske Vestkyststationer. | 
For Norges Østland, dets continentale Del, have vi | 
følgende Tal: 
1 Allerede af Observationerne fra 1861 og 1862 har Prof. Fearnley | 
fundet den samme Regel. Se Meteorologiske lagttagelser paa fem | 
0 = TA es mk || 
Telegrafstationer ved Norges Vestkyst, Christiania 1866. | 
The mean for the 3 Norwegian stations is 
LOI —=00 00% 
accordingly almost the same figures, but with reversed signs, 
that were found at the stations on the west coast of Norway. 
For the south eastern districts of Norway — the conti- 
nental part — we have the following figures: — 
— 
1 From the observations taken as early as 1861 and 1862, Pro- 
fessor Fearnley discovered the same rule; see “Meteorologiske Iagt- 
tagelser paa fem Telegrafstationer ved Norges Vestkyst,” Christiania 
1866. 
14* 
