As of April 1st, 2020, the official URL for accessing this website will change to https://gpm.nasa.gov. The legacy URL at https://pmm.nasa.gov will only continue to work for a limited time. Please update your records accordingly.
GPM is designed to advance scientific understanding of the Earth's water and energy cycle but also provides near real-time data for a wide array of societal applications. As a science mission with integrated application goals, the GPM mission has five scientific objectives: