Table 2.

Values of S(z) calculated from Holocene soils.

Embedded Image*Embedded Image*Embedded Image*Soil T (°C)Embedded Imageatm CO2 (ppmV)S(z) (ppmV)
Bolivia-23.3-6.5-8.516-18.42805,300
France-25.0-6.5-10.017-19.72803,838
Greece-25.7-6.5-9.319-18.82801,329
Greece-23.7-6.5-7.519-17.02801,245
Nevada-23.7-6.5-8.512-18.82806,139
Nevada-23.9-6.5-8.511-19.02805,389
Nevada-23.4-6.5-6.813-17.02801,433
New York-25.6-6.5-9.421-18.72801,297
Saskatchewan-24.2-6.5-7.920-17.32801,168
Saskatchewan-24.1-6.5-8.420-17.82801,586
Turkey-24.5-6.5-10.023-19.02803,019
Turkey-24.5-6.5-10.323-19.32804,151
Utah-24.5-6.5-7.416-17.32801,034
Utah-24.4-6.5-7.516-17.42801,120
Utah-23.8-6.5-8.816-18.72804,094
mean2,809
1σ1,842
  • *δ13C values are reported in ‰ vs PDB

  • 5 °C higher than temperature used by Ekart et al 1999.