This web eBook, developed in collaboration with the World Bank Group, explores water on Earth and how NASA observes and measures it.

Chapters:

• Earth's Water
• Measuring Precipitation: On the Ground and from Space
• Combining Earth Observations to Gain a Global Perspective
• Precipitation Data in the Real World
• NASA Data Access and Interactive Viewers
• NASA GPM/IMERG Precipitation
• NASA Flood Potential Analysis
• NASA GPM/IMERG Precipitation Viewer