Main Question or Discussion Point
At any given moment do scientists have an idea of how much water is in the atmosphere? Can we compare it to how much fresh water is stored on earth as a liquid?
Thanks to weather satellites, yes, they do. You've seen weather satellite images that show the Earth as ocean and land, partly covered by clouds. Those are visible images of the Earth as seen from space. Looking at the Earth in infrared gives a very different picture. Several wavelengths are particularly sensitive to water vapor. For example, here's a 6.7 micron channel image:At any given moment do scientists have an idea of how much water is in the atmosphere?