This module presents an overview of space-based microwave remote sensing for environmental applications with a focus on meteorological applications. It delivers basic information on polar-orbiting satellite characteristics, current microwave instruments, and the products they provide. Special attention is
given to the newer capabilities for the Suomi NPP (National Polar-orbiting Partnership) and future JPSS (Joint Polar Satellite System) satellites. Additional information is included for those missions being operated by the U.S.' international partners. This module also serves as an introduction to other, more in-depth modules covering the science and application of cloud, precipitation, water vapor, and land and sea surface observations.