CO? emissions 2 PgC yr?¹) 5.1 The carbon sources and sinks figure below shows an increasing land sink (green area) since the early 1900s. What must this increase in the land sink mean about the trend in global Net Ecosystem Exchange (NEE) since the early 1900s? 5 10 fossil fuel and cement from energy statistics land use change from data and models residual land sink measured atmospheric growth rate ocean sink from data and models emissions
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Step 1: The increase in the land sink shown in the carbon sources and sinks figure indicates that more carbon is being absorbed by the land ecosystem than being released into the atmosphere. Show more…
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Q5.10. The growth in the global Ecological Footprint since 1961 is largely a result of an increase in the global carbon footprint: As fossil fuel combustion has increased, what subsequent change has resulted in the rise of our global carbon footprint? The land associated with fossil fuel reserves has decreased The land required to produce alternative fuels has increased The land required to assimilate CO2 emissions has increased The land required to offset O2 consumption has increased
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The increase in carbon dioxide $\left(\mathrm{CO}_{2}\right)$ in the atmosphere is a major cause of global warming. Using data obtained by Charles David Keeling, professor at Scripps Institution of Oceanography, the average amount of $\mathrm{CO}_{2}$ in the atmosphere from 1958 through 2013 is approximated by $A(t)=0.012414 t^{2}+0.7485 t+313.9 \quad(1 \leq t \leq 58)$ where $A(t)$ is measured in parts per million volume (ppmv) and $t$ in years, with $t=1$ corresponding to 1958 . a. What can you say about the rate of change of the average amount of atmospheric $\mathrm{CO}_{2}$ from 1958 through $2013 ?$ b. What can you say about the rate of change of the rate of change of the average amount of atmospheric $\mathrm{CO}_{2}$ from 1958 through 2013 ?
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