In an effort to improve climate research, the Royal Netherlands Meteorological Institute (KNMI) is set to distribute new handheld rain gauges to its network of voluntary precipitation observers in 2025. This initiative aims to replace aging equipment, ensuring accurate and reliable rainfall measurements across the country.
The role of these volunteers is crucial; they collect daily precipitation data from their own gardens and local areas, contributing to a comprehensive overview of rainfall patterns in the Netherlands. This information is vital for weather forecasting and climate studies.
The new rain gauges have been rigorously tested and comply with international standards set by the World Meteorological Organization. They are designed to be more user-friendly and ergonomic, enhancing the overall measurement experience for volunteers.
To ensure a smooth transition, the KNMI will conduct a two-year comparative study at eight locations, using both the old and new gauges. This will help identify any discrepancies in readings and improve the understanding of measurement accuracy.
Every morning, over 300 volunteers manually record rainfall amounts and, when necessary, measure snow depth with a ruler. They also report any instances of hail. This data is submitted digitally to the KNMI, creating a detailed precipitation network that complements the institute's automatic weather stations.
Through these observations, scientists gain insights into climate change dynamics and the frequency of extreme rainfall, which is essential for preparing for potential flooding events.