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Observed trends Cooling degree days

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T_Fig2.36a_cdd.jpg   T_Fig2.36b_cdd.jpg    
 
Annual average cooling degree days for 1961–1990   Annual average cooling degree days for 1971–2000    
 
     
 
T_Fig2.37a_cdd.jpg   T_Fig2.37b_cdd.jpg  
 
Change in annual cooling degree days from 1961–1990 to 1971–2000   Change in annual cooling degree days from 1961 to 2006