Limiting future atmospheric carbon dioxide | Zendy

Sarmiento Jorge L. | Zendy; Le Quéré Corinne | Zendy; Pacala Stephen W. | Zendy

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Limiting future atmospheric carbon dioxide

Author(s) -

Sarmiento Jorge L.,

Le Quéré Corinne,

Pacala Stephen W.

Publication year - 1995

Publication title -

global biogeochemical cycles

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.512

H-Index - 187

eISSN - 1944-9224

pISSN - 0886-6236

DOI - 10.1029/94gb01779

Subject(s) - biosphere , environmental science , carbon dioxide , carbon dioxide in earth's atmosphere , atmospheric carbon cycle , atmospheric sciences , limiting , carbon fibers , carbon sink , atmospheric chemistry , environmental chemistry , carbon respiration , chemistry , carbon sequestration , negative carbon dioxide emission , oceanography , climate change , ozone , ecology , materials science , geology , mechanical engineering , organic chemistry , composite number , engineering , composite material , biology

We estimate anthropogenic carbon emissions required to stabilize future atmospheric CO 2 at various levels ranging from 350 ppm to 750 ppm. Over the next three centuries, uptake by the ocean and terrestrial biosphere would permit emissions to be 3 to 6 times greater than the total atmospheric increase, with each of them contributing approximately equal amounts. Owing to the nonlinear dependence of oceanic and terrestrial biospheric uptake on CO 2 concentration, the uptake by these two sinks decreases substantially at higher atmospheric CO 2 levels. The uptake also decreases with increased atmospheric CO 2 growth rate. All the stabilization scenarios require a substantial future reduction in emissions.

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