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Dr. George Hurtt Department of Natural Resources &

Dr. George Hurtt Department of Natural Resources & Institute for the Study of Earth, Oceans and Space University of New Hampshire Durham, NH 03824 george.hurtt@unh.edu. November 6, 2003. NAST 2001. IPCC 2001. IPCC 2001. Global C Budget (PgC/y). IPCC 2001. IPCC 1994. IPCC 2001.

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Dr. George Hurtt Department of Natural Resources &

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  1. Dr. George Hurtt Department of Natural Resources & Institute for the Study of Earth, Oceans and Space University of New Hampshire Durham, NH 03824 george.hurtt@unh.edu November 6, 2003

  2. NAST 2001

  3. IPCC 2001

  4. IPCC 2001

  5. Global C Budget (PgC/y) IPCC 2001

  6. IPCC 1994

  7. IPCC 2001

  8. Category Low High Forest Trees 0.11 0.15 Other Forest Organic Matter0.03 0.15   Cropland Soils 0.00 0.04 WoodyEncroachment 0.12* 0.13* Wood Products 0.03 0.07 Reservoirs 0.01 0.04   Exports MinusImports0.04 0.09   Exported byRivers 0.03 0.04 ApparentSinkWithout Woody Encroachment 0.25 0.58   Apparent Sink0.37 0.71 Sink 0.30 0.58 I II III 1990-1994 1.5 1 Land- Based Range } 0.5 0 -0.5 Transport Numbers of Regions Models 7 12 17 TM2 TM3 GCTMM Consistent land- and atmosphere- based U.S. carbon sink estimates. Pacala et al., 2001, Science, 292:2316-2320

  9. Projecting the Future of the U.S. Carbon Sink Hurtt et al., 2002, Proceedings of the National Academy of Sciences, 99(3):1389-1394

  10. Coupled Earth System Models Cox et al., 2000, Nature 408:184-187

  11. Context for decision making with uncertainty Kammen & Hassenzahl, 1999, Should We Risk It?, Princeton.

  12. Context for decision making with uncertainty Kammen & Hassenzahl, 1999, Should We Risk It?, Princeton.

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