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Metrics to assess the mitigation of global warming by carbon capture and storage in the ocean and in geological reservoirs
Author(s) -
Haugan Peter M.,
Joos Fortunat
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl020295
Subject(s) - environmental science , global warming , carbon cycle , climate change , leakage (economics) , carbon capture and storage (timeline) , carbon sequestration , carbon fibers , greenhouse gas , carbon dioxide , climatology , hydrology (agriculture) , oceanography , geology , ecosystem , materials science , ecology , geotechnical engineering , macroeconomics , composite number , economics , composite material , biology
Different metrics to assess mitigation of global warming by carbon capture and storage are discussed. The climatic impact of capturing 30% of the anthropogenic carbon emission and its storage in the ocean or in geological reservoir are evaluated for different stabilization scenarios using a reduced‐form carbon cycle‐climate model. The accumulated Global Warming Avoided (GWA) remains, after a ramp‐up during the first ∼50 years, in the range of 15 to 30% over the next millennium for deep ocean injection and for geological storage with annual leakage rates of up to about 0.001. For longer time scales, the GWA may approach zero or become negative for storage in a reservoir with even small leakage rates, accounting for the CO 2 associated with the energy penalty for carbon capture. For an annual leakage rate of 0.01, surface air temperature becomes higher than in the absence of storage after three centuries only.