More Satellites to Explore Clouds’ Most Intimate Secrets


The CloudSat radar will take vertical surveys of clouds and layers of clouds and determine how much water they contain and its form. Graeme Stephens of Colorado State University, the principal investigator, told a news conference on Wednesday at the Jet Propulsion Laboratory in Pasadena, Calif., that although just 1 percent of Earth’s water existed in the atmosphere, little was known about its overall role in climate.