About IPWG

The International Precipitation Working Group was initiated in 2000 after the 52nd session of the World Meteorological Organization (WMO) Executive Council recommended involving relevant science groups in a systematic manner to improve satellite system utilization. IPWG was then endorsed by Coordination Group for Meteorological Satellites (CGMS). IPWG provides a forum for operational and research users of satellite precipitation measurements to exchange information and fosters the development of better measurements and improvement of their utilization, the improvement of scientific understanding, and the development of international partnerships.



The first International Workshop on Space-based Snowfall Measurement was held in 2005.The goal of IWSSM is to bring together researchers focusing on the measurement of snowfall from space using active and passive microwave sensors for the purpose of assessing the state of the science and measurement technology and to recommend future directions in research and technology development.

Objectives of the workshop

  • Review the state of the art of rainfall and snowfall/high-latitude precipitation measurement techniques.
  • Discuss the application of satellite precipitation products for research and operations.
  • Recommend future directions to WMO/CGMS and Coordinate with GEWEX on topics related to precipitation.

Abstract Submission

  • In order to submit an abstract, you first need to register on the platform, then you can access the abstract submission form
  • Abstracts that deal with current operational and research precipitation estimation techniques, applications to climate and weather, data assimilation, validation, sensor calibration, scattering and future satellite missions are encouraged.
  • The abstract should be in English, approximately one half of an A4 page.
  • Registration applications and abstracts will be reviewed by the Program Committee of IPWG and IWSSM.
  • No abstract fee is requested.

Scientific Committee

  • Viviana Maggioni (George Mason University, USA, vmaggion@gmu.edu)
  • Philippe Chambon (Météo-France, France, philippe.chambon@meteo.fr)
  • Ralf Bennartz (Vanderbilt University, USA)
  • Stefan Kneifel (University of Cologne, Germany)
  • Chris Kummerow (Colorado State University, USA)
  • Ralph Ferraro (NOAA, USA)
  • Huan Meng (NOAA, USA)
  • Dong-Bin Shin (Yonsei University, Korea)
  • Ziad Haddad (Radar Science/JPL, USA)

Local Organizing Comittee

  • Chris Kummerow (Colorado State University, USA)
  • Holli Knutson (Colorado State University, USA)





Important dates

Registrations are open

Abstract submissions

are closed


Abstract submission deadline:

January 31st, 2020

Deadline extended

to February 15th, 2020


Registration deadline:

April 15th, 2020

Online user: 1