1905 

 1 



10 



cc 9 



(- 

 < 



^ 8 



1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970 1975 1 98C 



— I \ \ \ 1 \ \ \ \ \ \ \ \ T 



/ (estimated) 



(a) 5-year moving average of mean annual temperatures 



J L 



J L 



J L 



J L 



45 



43 





1905 1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980 



Figure 4-4 . 



Mean annual sea surface temperatures recorded at Boothbay 

 Harbor from 1906 to 1978 (a) and 5-year moving average (b) 

 (Garfield and Welch 1978). 



4-12 



