Remember, to find a percentage divide the current level by the past level and multiply by 100. The observatory is far from sources of carbon dioxide and in the presence of a clean flow of ocean air. Suggest two bad places to take these measurements. Discuss its appearance and the summer and winter differences in CO2. Plants are dormant in the winter.
Plant growth occurs in the summer and absorb carbon dioxide.
Due to this pattern, we expect the absorption of carbon dioxide to fluctuate with growing seasons. Similar trends have been found in the changes of gas levels and global temperatures. These trends have led many to believe that that the two are related. The ice core samples go back 160,000 years and provide data on temperature and carbon dioxide levels. A positive correlation has been found between the two.