Based on the change in CO2 measured at Mauna Loa from 1958 to 2014 calculated in

Question

Based on the change in CO2 measured at Mauna Loa from 1958 to 2014 calculated in 2.3, about how much has CO2 increased on a yearly basis over this time (divide the change in CO2 by the number of years – and remember to include units in your answer)?

The figure below shows the record of monthly-averaged and seasonally-adjusted atmospheric carbon dioxide (CO2) gas concentrations measured at the Mauna Loa Observatory in Hawaii beginning in 1958 and ending in 2014. Answer the questions below pertaining to these measurements. You might want to have a simple calculator available to help you with these questions.

Based on the change in CO2 measured at Mauna Loa from 1958 to 2014 calculated in 2.3, about how much has CO2 increased on a yearly basis over this time (divide the change in CO2 by the number of years – and remember to include units in your answer)?

Explanation / Answer

During 1958, CO2 concentration at Mauna Loa=315ppm

During 2014, CO2 concentration at Mauna Loa-399ppm

Change in CO2 concentration from 1958 to 2014 = 399-315=84ppm

Rate of Change of CO2 concentration from 1958 to 2014 = 84/56= 1.5 ppm/year

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