4° 



BJØRN HELLAND-HANSEN AND FRIDTJOF NANSEN. 



M.-N. Kl. 



The material of observations is naturall}' much too small for a com- 

 putation of the normal temperature of the water of the current in these 

 regions. It is, however, evident that the water was comparatively very 

 warm in 1910, and the above values have, therefore, to be raised b}^ a 

 certain amount, in order to give more probable values for the anomaly. 

 If it be assumed that the anomaly of the temperature of the water in 1910 

 was -|- 0.40"^ C. in the southern region (of Sects. I and II), and -|- 0.25'' C. 

 in the northern region (of Sects. IV and VI), we find the following values 

 of the possible anomaly in the other years: 



The above values are naturally very inaccurate as they are based on 

 far too few observations. They may therefore only be considered as giving 

 some approximate indications of the directions in which the variations of 

 the temperature of the current have gone in some years. The values may 

 be considered as most trustworthy for 1878, rgoo, and 1910, from which 

 years we have the fullest and best material of observations. From 1899 

 there are also a good many observations, though scattered over a wide 

 area and giving no vertical sections of the current. The observations 

 from 1898 are very few and insufficient for comparison, from 1908 there 

 is onl}' one vertical series of observations, and from 1901 there are no 

 deeper observations than in 200 and 280 metres. The observations from 

 1896 are not satisfactory for a comparison such as this. 



From 1905 there are only two stations, taken during the Belgica 

 expedition very far north; and no certain conclusions can be drawn from 

 them as to the mean temperature of the current that year. The anomaly 

 found, -f- 0.63° C, agrees nevertheless very well with the fact that the 

 Norwegian Atlantic Current was very warm in the Lofoten section in May, 

 1904, and in the Sognefjord section in May, 1903. 



