Transient climate–carbon simulations of planetary geoengineering
- Department of Global Ecology, Carnegie Institution of Washington, 290 Panama Street, Stanford, CA 94305
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Edited by David M. Karl, University of Hawaii, Honolulu, HI, and approved April 25, 2007 (received for review January 16, 2007)
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Fig. 1.Simulated changes in surface air temperature (a and c) and precipitation (b and d) at 2100 relative to 1900 for model runs A2 (a and b) and GEO (c and d). Plots show differences in 10-year averages centered on 2095 and 1895, respectively.
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Fig. 2.Prescribed geoengineering radiative forcing (a), simulated globally averaged surface air temperature (b), simulated atmospheric CO2 (c), and simulated change in combined land and ocean carbon storage (d) for runs A2 (red), GEO (blue), ON_2025 (green), ON_2050 (orange), and ON_2075 (purple).
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Fig. 3.Simulated surface air temperature (a) and annual rate of temperature change (b) for runs A2 (red), GEO (BLUE), OFF_2025 (green), OFF_2050 (orange), and OFF_2075 (purple). Runs with doubled climate sensitivity (A2+CS, GEO+CS, and OFF_2050+CS) are plotted as dashed lines.
Footnotes
- †To whom correspondence should be sent at the present address: Department of Geography, Planning, and Environment, Concordia University, 1455 de Maisonneuve Boulevard West, Montreal, QC, Canada H3G 1M8. E-mail: dmatthew{at}alcor.concordia.ca
- © 2007 by The National Academy of Sciences of the USA
