How Do Ice Cores of Glaciers Tell Us about Past Climates?
ES2105  Recent Changes in Atmospheric Carbon Dioxide

Scientists have been precisely measuring the amount of carbon dioxide in the atmosphere since 1958. The results of these studies are plotted on the graph below. The yearly average CO2 level is represented by the smooth black line, and seasonal changes appear as small peaks and dips.


NOAA
Recent CO2 measurements taken at Mauna Loa, Hawaii.

9. Based on your observations of CO2 amounts, predict how temperatures changed from 1958 to 2001. 



	

 	

		
			
	

	
	

		 
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