The International Precipitation Working Group (IPWG) was established as a permanent Working Group of the Coordination Group for Meteorological Satellites (CGMS) in 2001. The IPWG is co-sponsored by CGMS and the World Meteorological Organization (WMO) and focuses the scientific community on operational and research satellite based quantitative precipitation measurement issues and challenges. IPWG currently has more than 500 registered members from around the globe organized in a set of Working Groups with specific deliverables related to product creation, validation, machine learning and incorporating CubseSats and SmallSats into the constellation, as well as Focus Groups charged with coordinating discussions around topics of mutual interest.
The IPWG Working Groups (WGs) and Focus Groups (FGs) are the following:
More information about IPWG at: https://www.eorc.jaxa.jp/IPWG/
The 12th IPWG Workshop is organized by the Institute of Meteorology and Water Management National Research Institute in Krakow in July 2026.
The main objectives of the workshop will be to review and finalize a number of IPWG initiatives related to its goals to produce higher resolution, easily accessible global precipitation products along with efforts to produce quality metrics in regions without traditional validation data. Together with an assessment of progress in open science questions, and progress to make greater use of new satellite constellations, the Workshop will aim to build a broad consensus view of precipitation capabilities and needs to move the understanding and applications forward in a coordinated manner.
This will be accomplished by a series of Plenary sessions, group discussions and poster sessions. A separate training activity will focus on new and emerging satellite technologies, sensors, and precipitation datasets.
| Abstract Submission deadline | 15 February 2026 |
| Notification of Abstract Acceptance | 31 March 2026 |
| Issue of Program | 31 March 2026 |
| Registration (free) deadline | 30 April 2026 |
| Workshop dates | 7 to 10 July 2026 |
Abstracts that deal with current operational and research precipitation estimation techniques, challenges related to the estimation of high-latitude and orographic precipitation, applications to hydrology, climate, and weather, algorithm development, temporal and spatial trends in precipitation, novel validation efforts, precipitation forecasting, and future satellite missions are encouraged.
A call for abstract will be released in the coming weeks and registration/abstract submission will start on October 2025. It is expected that abstracts will be due in January/February 2026.