USGCRP
Home 
National Assessment
Background Information
Scenarios & Data
Summary Tables of Scenarios Products
Table 2: Climate Scenario Data
Climate Section of the Foundation Document: Figures
Historic Carbon Emissions, Concentration and Temperature |
| Search |
Updated
12 October, 2003
|
US
National Assessment of |
|
|
 |
Figure 2: Records of CO2
emissions, CO2 concentrations, and Northern Hemisphere average surface temperature
for the past 1000 years. (a) Reconstruction of past emissions of CO2 as
a result of land clearing and fossil fuel combustion since about 1750 (in
billions of metric tons of carbon per year) [data from CDIAC, 2000; Andres
et al., 1999; and Marland et al., 1999; Houghton, 1995, 1996]; (b) Record
of the CO2 concentration for the last 1000 years, derived from measurements
of CO2 concentration in air bubbles in the layered ice cores drilled in
Antarctica, a location that has been found to be representative of the global
average concentration [data from Etheridge et al., 1998; Keeling and Whorf,
1999]; (c) Reconstruction of annual-average Northern Hemisphere surface
air temperatures based on paleoclimatic records (Mann et al., 1999).
References Atmospheric CO2 levels - Law Dome Etheridge, D.M., L.P. Steele, R.L. Langenfelds, R.J. Francey, J.-M. Barnola, and V.I. Morgan. 1996. Natural and anthropogenic changes in atmospheric CO2 over the last 1000 years from air in Antarctic ice and firn. Journal of Geophysical Research 101:4115-4128. Atmospheric levels - Mauna Loa Keeling, C.D. and T.P. Whorf. 1999. Atmospheric CO2 records from sites in the SIO air sampling network. In Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. Land-use emissions Houghton, R.A. 1996. Terrestrial sources and sinks of carbon inferred from terrestrial data. Tellus 48B: 420-432 Houghton, R.A. 1995. Land-use change and the carbon cycle. Global Change
Biology 1:275-287. Fossil-fuel emissions Andres, R.J., D.J. Fielding, G. Marland, T.A. Boden, N. Kumar, and A.T. Kearney. 1999. Carbon dioxide emissions from fossil-fuel use, 1751-1950. Tellus, 51B: 759-765. Marland, G., T.A. Boden, R.J. Andres, A.L. Brenkert, and C. A. Johnston. 1999. Global, Regional, and National Fossil Fuel CO2 Emissions. In Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. Temperature Mann, M.E., Bradley, R.S., and Hughes, M.K. (1999). Northern Hemisphere
temperatures during the past millennium: inferences, uncertainties, and
limitations. Geophysical Research Letters, 26(6): 759-762. |
|
