Figure 2 (IMAGE) Moscow Institute of Physics and Technology Caption Concentration of water vapor in the atmosphere dependent on heliographic longitude, height from the surface, and geographic latitude. The blue and red indicate downward and upward flows, respectively. Credit Dmitry S. Shaposhnikov et al./Geophysical Research Letters Usage Restrictions None License Licensed content 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.