Temporal Variations (image) Research Organization of Information and Systems Share Print E-Mail Caption This graph shows temporal variations in the atmospheric CO2 concentration at Syowa Station, Antarctica (blue) and Ny-Ålesund, Svalbard (red). Dots, thick lines, and thin lines indicate the observed values, best-fitted curves, and long-term trends, respectively. Seasonal variations at the Arctic are larger than those at the Antarctic region because the terrestrial biosphere consumes atmospheric CO2 via photosynthesis and its effect is stronger in the northern hemisphere than in the southern hemisphere. Credit National Institute of Polar Research and Tohoku University Usage Restrictions Credit required Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.