Estimate the yearly a) seasonal variation and b) net increase of carbon dioxide

Question

Estimate the yearly a) seasonal variation and b) net increase of carbon dioxide in our entire atmosphere ( g CO2 is 3.17 x 10^19 g ), given the data from the slope of ythis curve gives the net annual increase (delta ppm/yr)

a) calculate total carbon dioxide ( as g) released into the entire global atmosphere from rotting plants etc. from fall to spring in the northern hemisphere ( yearly carbon cycle, average annual peak hightth (ppm)).

b) calculate the net increase (as g) of carbon dioxide released into the global entire earth's atmosphere during one year, as the slope of the graph line during the most recent decade, dealta ppm / dealta years is ppm/yr

Estimate the yearly a) seasonal variation and b) net increase of carbon dioxide in our entire atmosphere ( g CO2 is 3.17 x 10^19 g ), given the data from the slope of ythis curve gives the net annual increase (delta ppm/yr) a) calculate total carbon dioxide ( as g) released into the entire global atmosphere from rotting plants etc. from fall to spring in the northern hemisphere ( yearly carbon cycle, average annual peak hightth (ppm)). b) calculate the net increase (as g) of carbon dioxide released into the global entire earth's atmosphere during one year, as the slope of the graph line during the most recent decade, dealta ppm / dealta years is ppm/yr

Explanation / Answer

CO2 increase in each year (apprx.)

1970 - 1960 = 325 - 315 = 10 ppm/L increase

1980 - 1970 = 338 - 325 = 13 ppm/L increase

1990 - 1980 = 356 - 338 = 18 ppm/L increase

2000 - 1990 = 370 - 356 = 14 ppm/L increase

Average of increase = (10+13+18+14) / 4 = 55/4

= 13. 75 ppm/L increase per year on an average [slope of the line]

So 13.75 ppm/L per year is the Net increase of carbon dioxide in our entire atmosphere

1 ppm = 1mg/litre

So, 1ppm /L = 1 mg

13.75 ppm/L* 1 mg * 10-3 g

   1 1 ppm/L 1 mg   

= 0.01375 g =net increase of CO2 per year , released into atmosphere [answer #B]

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A.

Northern hemisphere, spring begins on 1 March, summer on 1 June, autumn on 1 September, and winter on 1 December.

So from fall[Sep 1 to Nov 30] to spring [Mar 1 - May 31], its a gap of 9 months

so 3/4 of the year

so CO2 released in 9 months = 3/4 * 0.01375 g

= 0.0103125 g [Answer # A]

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