AUSTRALASIAN WEATHER 83 



are reported by ships between New Zealand 

 and the Cape, " we, (in Southern New 

 Zealand), invariably got a showery spring and 

 summer with plentiful rains in the winter follow- 

 ing." 



CHAPTER III. THE INTERVAL BETWEEN DIS- 

 TURBANCES IN OCEANIC CIRCULATION, AND 

 THEIR EFFECT ON THE WEATHER. 



Unfortunately we cannot trace the full 

 influence of these ice-masses on the Australasian 

 climate, as we know so little of the temperature 

 of the sea water in the Southern Ocean. 

 Analogy with other oceans however, suggests 

 that the lowering of the temperature of the sea 

 water, which is in part the cause and in part an 

 effect of the northern position of the icebergs, 

 must influence the climate of Australia and New 

 Zealand. One striking case in the North 

 Atlantic, knowledge of which we owe mainly 

 to the work of Mr. H. N. Dickson, the lecturer 

 on Oceanography at Oxford, shows how an 

 unusual condition of weather in north-western 

 Europe was due to an unusual position of the 

 North Atlantic anticyclone, 18 months before.* 

 Dickson's comparison of the North Atlantic in 

 1896 and 1897, shows that there were several 

 differences in the circulation, which were due to 



*For a non-technical statement of this case see the Argus, iQth Sept. 

 1903. 



