Vostok Ice Core CO2 Record
http://cdiac.esd.ornl.gov/trends/co2/graphics/vostok.co2.gif

Carbon Dioxide Information Analysis Center , U.S. Department of Energy (DOE)


This site from the Carbon Dioxide Information Analysis Center features a graph of CO2 levels in entrapped air from the Vostok Ice-Core.

This resource is referenced here:
Subject: Geoscience:Atmospheric Science:Climatology , Geoscience:Atmospheric Science
Resource Type: Scientific Resources:Research Results, Datasets and Tools:Datasets
Data Derived: Data Derived
Data Source: Observational Data
Topics: Atmosphere, Climate