Do times of low atmospheric CO 2 on the carbon dioxide graph correspond to the t

Question

Do times of low atmospheric CO2 on the carbon dioxide graph correspond to the times of cold glacial stages seen on the temperature graph? (3 pts)

Now look at the next graph (image below). It shows CO2 concentrations in the atmosphere over the last 420,000 years, extracted from the Vostok ice core. The CO2 concentrations are given in parts per million (ppm). Vostok Ice Core Data: Carbon Dioxide vs Age 325 300 225 200 175 50,000 00,000 150,000 200,000 250,000300,000 350,000 400,000 450,000 age (years before present) Hint: Think of a CO2 value of 230 ppm on the graph as a baseline. The amount of CO2 in the atmosphere was relatively low when its concentration was less than 230 ppm, relatively high when its concentration was above 230 ppm 8. Do times of low atmospheric CO2 on the carbon dioxide graph correspond to the times of cold glacial stages seen on the temperature graph? (3 pts)

Explanation / Answer

Yes, the times of low atmospheric CO2 on the carbon dioxide graph corresponds to the times of cold glacial stages seen on the temperature graph. All the times the carbon dioxide levels are the lowest, it has been the times of cold glacial stage.

For example the last glacial period which occured in the Pleistocene epoch which began about 110,000 years ago and ended about 15,000 years ago. and if you look closely in the map the carbon dioxide levels are relatively low during that period i.e below 230 ppm. In the similar manner it coincides with other glacial periods as well.

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