24 A SUMMER IN GREENLAND 



data collected at Jakobshavn (lat. 69 N.): Curve I 

 shows the air temperature in degrees Centigrade 

 and Fahrenheit for the twelve months; II shows 

 the percentage of days in each month on which 

 the thermometer fell below the freezing-point; 

 III gives the rainfall in inches and millimetres. 

 It is interesting to note that the date of flowering 



H 



m 



-25 



M 



M 



D 



23 



14 



-25 



n 

 m 



of several Greenland plants fluctuates within a 

 range of a few weeks and that this is consistent 

 with the variation of the date of incidence of the 

 spring temperature, that is a temperature above 

 freezing-point. In the chart the temperature curve 

 (I) shows the mean about which there is a fairly 

 wide fluctuation. 



It is on the whole true that the further north 

 one goes, the more settled and finer the weather. 



