CONTENTS 



PAGE 



Contents iii 



Preface . viii 



I. The aim of the investigation. The assembl}- of the observational 



material I 



II. The observational material 4 



III. Survey of the region investigated 9 



The Gulf Stream and the Labrador current. The cold 

 " Wedge " southerly of Newfoimdland Banks. Distribu- 

 tion of surface temperatures in February. Distribution of 

 atmospheric pressure and winds in January and Februarj'. 

 Distribution of atmospheric temperature in February. 

 Cloudiness and precipitation in February. Distribution of 

 the surface temperature and the air temperature along the 

 route Channel-New York in February and March-April. 

 Change of temperature during the investigated decade. 

 Difference between the temperature of the water and the air. 



IV. Earlier investigations of the temperature variations of the Atlantic 



Ocean 26 



O. Pettersson (26). W. Meinardus (29), H. H. Hildebrandsson 

 (32), H. N. Dickson (34), G. Schott (35), W. Brennecke, 

 G. Schott, L. Mecking (38|, J. Hann (39), Grossmann (40), 

 J. Petersen (41), H. Liepe (46), Engeler (49), W. Koppen 

 (50), C. Hepworth (50), P. H. Galle (51). 

 V. The variations of the surface temperature 52 



Temperature variations in two degree fields of longitude and 

 in ten degree fields of longitude on the path Channel-New 

 York. Geographic and time distribution of the temperature 

 variations in the four degree longitude fields of the region 

 Channel-New York. Temperature variations in ten degree 

 longitude intervals on the southerly course Portugal-Azores. 

 Difference between the temperature variation in the middle 

 parts of the ocean and in the parts nearer the continental 

 coasts. Average temperature anomalies for the whole 

 breadth of the North Atlantic Ocean and for its middle 

 portion. Temperature variation in the Danish fields 

 northerly of fifty degrees north latitude. 



Variations of the surface temperatures of the coldest parts of 

 the year compared with the variations of the yearly tem- 

 peratures of different regions of the sea. 



Similarity of the temperature variations over great regions of 

 the ocean. Difference between easterly and middle parts 

 of the North Atlantic Ocean. 



Smithsonian Miscellaneous Collections, Vol. 70, No. 4 



III 



