Nio 
Bredde (Zat.) 60° 65° 60° 70° 60° 65° 70° 750 60° 
Længde (Long.) 30° W. 30° W. 20° W. 20° Wi. 10° W. 10° W. 10° W. 10° We 09 
Januar 746.0 746.3 749.9 751.0 752.5 749.0 751.0 753.6 755.1 
Februar 48.1 48.7 50.1 54.4 54.2 50.0 52.6 55.6 56.3 
Marts * 53.2 55.5 55.2 58.6 56.0 55.8 57.1 60.1 56.1 
April 55-5 58.1 58.3 62.2 58.5 58.0 60.0 64.2 59.3 
Maj 58.0 59.3 59.9 62.5 60.5 61.0 62.1 64.2 60.4 
Juni 57.0 57.0 56.7 59.8 59.0 57.8 58.9 60.4 60.4 
Juli 57-4 57-7 57.5 58.7 58.4 57-2 58.0 59.3 584 
August 56.4 B7/0ll 57-3 58.4 58.3 57.4 58.1 59-3 58.3 
September 54.1 54.8 55.0 56.5 55.9 55.3 56.0 58.7 56.5 
October 53-1 54:7 53.2 57.2 54.2 53-3 55-5 58.5 55-4 
November 53.7 56.1 55.4 60.8 56.7 57.6 60.0 62.5 56.7 
December 48.8 50.0 52.6 56.2 54.0 51.7 53.7 56.1 55.2 
Aar (Year) 753:4 754.6 755-1 758.0 756.5 755-3 756.9 759-4 757-3 
Bredde (Zat.) 65° 70° Te 65° 70° Ue Tes! 70° 70° 
Længde (Long.) 0° 0° 0° 10° E 10° E 10° E 20° E 40° E. 50° E 
Januar 751.5 750.3 752.9 755-2 PRXD 752.7 752.8 755-0 755.8 
Febrar 53.8 52.3 55.1 55.2 52.1 53.8 53-9 54.1 56.9 
Marts 56.7 57.1 58.4 55.8 54.0 56.0 56.2 54.3 RID 
April 57-9 58.3 61.1 58.5 57-5 58.3 58.7 57-4 60.3 
Maj 60.2 59.7 62.3. 60.2 59.0 59.9 60.0 60.9 63.2 
Juni 58.1 58.1 60.1 59.7 58.4 58.7 58:8 59.2 59.7 
Juli 56.9 56.3 58.3 58.3 57.1 R77) 57-7 59.2 60.4 
August 57.6 58.0 58.8 58.1 57-5 57-7 57.7 58.3 59.8 
September 56.7 B7/oll 58.3 57.2 56.2 57.4 56.8 57.5 59.5 
October 53.1 53.9 55.8 56.1 53-7 56.1 55-1 56.2 57.0 
November 55.2 57.2 60.2 55.1 54.5 58.1 56.7 55-5 57.2 
December 52.1 53.6 55-3 54.8 54.2 55.4 54.2 56.2 58.4 
Aar (Year) 755.8 756.0 758.1 757-6 755-5 756.8 756.6 757.0 758.8 
Mosselbay. Smiths Obs. ' Sabine I. Jan Mayen. 
Bredde (Zat.) TAP ber 89 28/ 749 327 70? 59” 
Længde (Zong.) 16 4 E 15 43 E 18 50 W 8 28 W 
Aar (Year) 761.1 760.1 760.6 757-3 
Afsættes disse samt de skotske og danske Observa- 
tioner paa et Kart, finder man, at der 1 alle Maaneder 
ligger et Lufttryk-Minimum over det norske Hav". Det, 
som her interesserer os mest, er det normale Lufttryk for 
Aaret. Dette er fremstillet ved Hjelp af Isobarer i PI. 
XXXI. I dette Kart ere samtlige benyttede Observationer 
indtegnede. De Tal paa Havet, der ikke høre til de oven- 
nævnte Stationer, ere udledede af Maanedsmedia, fundne 
ved Hjelp af Maanedskarter og controllerede ved Curver 
for den aarlige Variation. 
I Sydvest for Island finde vi det bekjendte Grønlandsk- 
Islandske Lufttryk-Minimum med et Lufttryk af under 
754 mm. Imellem Sydost-Enden af Island og den sydlige 
Del af Østhavet ligger et langstrakt Lufttrykminimum, om- 
1 En udførligere Fremstilling af Lufttrykkets Fordeling over 
Nordvest-Europa og Nordhavet har jeg givet i Zeitschrift der öster- 
reichischen Gesellschaft fir Meteorologie 1884, S. 145. Med Karter. 
Man observere Berigtigelserne i samme Tidsskrift S. 303 og for 1885 
S. 82, samt Jahrbuch des norwegischen meteorologischen Instituts 
fiir 1884, Vorwort, S. VI og VII, samt Jahrbuch fir 1885, Vorwort. 
Tallene i ovenstaaende Tabel ere corrigerede efter alle bekjendte Cor- 
rectioner, efterat Kartet, Pl. XX XI, var trykt. 
Den norske Nordhavsexpedition. H. Mohn: 
Now if these observations, together with the Scottish 
and Danish, are set down on a map, a minimum of at- 
mospheric pressure will be found to extend during every 
month of the year above the Norwegian Sea.t That with 
which we here have specially to deal is the normal atmo- 
spheric pressure for the year. It is represented by means 
of isobars in Pl XXXI. The map gives all observa- 
tions made use of. The figures for the sea not belonging 
to the fore-mentioned Stations, have been educed from monthly 
media found by means of monthly maps and controlled by 
curves for the annual variation. 
South-west of Iceland, occurs the well-known Green- 
land-Icelandic minimum, with a pressure of somewhat less 
than 754 mm. Between the south-eastern extremity of 
Iceland and the southern part of the Barents Sea, we have 
t A more detailed account of the distribution of atmospheric 
pressure over North-western Europe and the North Ocean, I have 
given in Zeitschrift der dsterreichischen Gesellschaft fiir Meteorologie, 
1884, p.145. With Maps. Attention is called to the rectification of 
errors in that volume of the Periodical, p.303, and in that for 1885 
p. 32; as also to Jahrbuch des norwegischen meteorologischen Instituts 
fiir 1884, preface, pp. VI and VII; and to Jahrbuch fiir 1885, preface. 
The numbers in the above Table were corrected for all known errors 
after the Map, Pl. XX XI, had been printed. 
Nordhavets Dybder, Temperatur og Strømninger. 15 
