The Stability of Atmospheric CO2 Concentration in the Last 400,000 Years

What does ice core data indicate about the atmospheric CO2 concentration in the last 400,000 years?

a. 300 ppm; greater than 300 ppm b.370 ppm; less than 300 ppm c. 370 ppm; less than 370 ppm d. 370 ppm less than 370 ppm e. 300 ppm; greater than 370 ppm

Answer:

The concentration of carbon dioxide (CO2) in Earth's atmosphere has been relatively stable over the last 400,000 years, as indicated by ice core data.

Ice core data collected from polar ice caps reveals valuable insights into the atmospheric CO2 concentration over the past 400,000 years. By studying air bubbles trapped in ice cores, scientists have been able to determine that the concentration of CO2 in the atmosphere has remained within a certain range during this extensive time period.

These ice core samples provide a direct record of past atmospheric conditions, allowing researchers to analyze the composition of ancient air and measure the levels of greenhouse gases such as CO2. The data gathered from ice cores indicate that there has been a consistent stability in the concentration of CO2, without exceeding a certain threshold.

This stability in atmospheric CO2 concentration over such a long timescale is crucial for understanding the natural variations in Earth's climate and the impact of human activities on the environment. It highlights the importance of monitoring and regulating greenhouse gas emissions to maintain the delicate balance of our atmosphere.