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The National Aeronautics and Space Administration (NASA), Science Mission Directorate, Earth Science Division has selected new projects from the 2018 Precipitation Measurement Missions (PMM) Science Team focus area solicitation. PMM projects focus on investigations related to satellite observations of precipitation using measurements from, but not limited to, the Global Precipitation Measurement (GPM) Core Observatory, GPM mission constellation partner spacecraft, and the Tropical Rainfall Measuring Mission (TRMM). Specifically the PMM program supports three types of investigations: (1) The

a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z Click one of the letters above to advance the page to terms beginning with that letter. A active sensor search for term A remote-sensing sys­tem (e.g., an instrument) that transmits its own radiant energy to detect an object or area for observation and receives the reflected or transmitted energy. Radar is an example of an active system. Compare with passive sensor. algorithm search for term A self-contained step-by-step set of operations to be performed. Scientists use mathematical algorithms

What is NASA Worldview? This tool from NASA's Earth Observing System Data and Information System (EOSDIS) provides the capability to interactively browse global, full-resolution satellite imagery and then download the underlying data, including data from the Global Precipitation Measurement Missions. Many of the 600+ available products are updated within three hours of observation, essentially showing the entire Earth as it looks "right now". This supports time-critical application areas such as wildfire management, air quality measurements, and flood monitoring. Arctic and Antarctic views of

GPM Ground Validation Data Homepage: http://gpm-gv.gsfc.nasa.gov/ GPM Ground Validation Data Access: https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/gpmValidation/ The goal of this site is to provide a one-stop-shopping portal for accessing the various radar, disdrometer, gauge and other instrument data sets supporting GPM GV activities. Use the tabs above to access the various datasets, including: Radar Gauge Disdrometer NOAA/NMQ Field Campaigns Validation Network Wallops Precipitation Research Facility Marquette data browser (GV data from the Marquette, Michigan NWS Snowfall Observation Site)

Permissions for using imagery found on this website are the same as those listed in NASA's official Media Usage Guidelines For questions about permission for using NASA images and videos, please refer to NASA's official Media Usage Guidelines. For any additional questions please contact bert.ulrich@nasa.gov A few key points of NASA's media usage policy include: NASA content (images, videos, audio, etc) are generally not copyrighted and may be used for educational or informational purposes without needing explicit permissions. The NASA insignia logo (the blue "meatball" insignia), the retired