a well defined Labrador Current, the mixed water extended further 

 eastward than ever noted. Prior yeare' Ice Patrol isotherm charts 

 were used for this analyzation. 



Another excellent indicator of a definite warming trend can be found 

 by following the West Greenland Current. This current tends to keep 

 an ice-free lead along the west Greenland coast to about Sondrestrom 

 Fjord during the period of maximum advance. This year, open water 

 extended well to the north of Upernavik by late May 1966. 



A singular absence of a well defined Labrador Current was noted 

 from the oceanographic data collected by the U.S.C.G. Cutter Ever- 

 green. Figures 10 and 21 are the Dynamic To^jography and Mean Sea 

 Temperatures to 150 meters charts respectively compiled fi'om data 

 collected 4 to 7 April 1966. The mean sea temperatures do not indicate 

 the presence of cold Labrador water. Zero degree average tempera- 

 tures should normally be present. The dynamic topography chart 

 shows flat contours and the absence of a normally well defined 

 Labrador Current. 



SEA LEVEL PRESSURE 

 MONTHLY MEAN 



FEB 1966 



c^__^k 



Figure 18. — Sea level chart — Monthly mean pressure — February 196& 



20 



{ 



