Related Subjects
20 year smoothed CO2
75 year smoothed CO2
Atmospheric CO2 reconstructions
CO2 measurements
CO2 mixing ratio
TRENDS-CO2
analysis date
ice age year A.D.
ice sample dode
mean air age year A.D.
mean ice depth
year A.D.
Environmental pollution
Environmental protection
Environmental sciences
GE1-350
TD169-171.8
TD172-193.5
envir
geo
www.sciencemag.org/cgi/content/full/313/5788/827/DC1