Atmosphere 589 + 240 ±10 (average atmospheric increase: 4 PgClyr) 6 6 Net ocean

Question

Atmosphere 589 + 240 ±10 (average atmospheric increase: 4 PgClyr) 6 6 Net ocean flux Net land flux 2.6±1.2 11.7 2.3 ±0.7 Rock weathering Export from soils to rivers 50 Marine surface ocean 900 biota 3 Rivers f11 0.9 Burial 901 1101 0.2 Intermediate & deep sea 2 Dissolved organic carbon 700 Vegetation 37,100 +155 ±30 350-550 -30 ±45 Soils 0.2 1500-2400 Permafrost 1700 Fossil fuel reserves Ocean floor surface sediments 1,750 Gas: 383-1135 Oil: 173-264 Coal: 446-541 -365 ±30 Units Fluxes: PgCyr Stocks: Pgc

Explanation / Answer

pgC means peta gram of carbon = 1015 gm of carbon

1. Total atmospheric carbon reserve at present = 589+240 pgC = 829 pgC = 829×2.12 ~ 1758 ppm

2.Pre industrial conc in pgC= 589 pgC =589×2.12 ~ 1249 ppm

3. If all of the carbon emitted due to fossil fuels were in the atmosphere then

Total carbon in atmosphere= 829+365 =1194 pgC

4. 1194 ×2.12 ~ 2531 ppm

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