How much has CO2 varied in the Vostok record? What were the highest and lowest values? What was the range of CO2 values?
Examine Figure 18.2. The Vostok ice core is 3310 m (10,860 ft) long. The full record extends back to 422,000 years before the present. The figure shows CO2 in parts per million (ppm) and temperature anomalies in Celsius degrees.
What will be an ideal response?
Max 300 ppm, min 182 ppm, range 118 ppm.
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