Contact Us

Please use the form below to contact the Precipitation Measurement Missions.


  • Please read our FAQ before contacting us to check if your question has been answered.
  • When submitting a question about TRMM or GPM data, please include the name of the product / algorithm you are using (e.g. 3B42RT) and the URL or source you downloaded the data from (e.g. the PPS FTP).
  • 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