The KNMI Data Platform is continuously updated and new datasets and new versions of datasets have been published the past few months.
New datasets
- Daily in situ meteorological observations (validated): This dataset contains daily meteorological data from the automatic weather stations. The data have been validated by our validators to ensure accuracy. An hourly version is also available.
- Lidar wind profiling data from Cabauw: Near–real-time Doppler lidar measurements of wind and vertical air motions above Cabauw, obtained using various scan types from the Windcube200S.
- Wet bulb globe temperature: Wet Bulb Globe Temperature values derived from 10-minute synoptic observations from KNMI using the Liljegren method.
- Potential wind from before 2009: Potential wind data for the period 1950–2009, calculated using the sigma method based on 10-minute wind measurements and converted to hourly means.
- KNMI rain yearbooks (1932–1990): Digital scans of the KNMI precipitation yearbooks (1932–1990) containing daily precipitation observations from the volunteer network, including quality control and processing by KNMI.
- KNMI’23 climate scenarios for drought research: KNMI’23 climate scenarios based on the RACMO v2.3 climate model, with representative 30-year periods and characteristic years, specifically compiled for applications in water management and drought research.
- 4-day forecast air quality: Within the framework of the CAMS NCP for the Netherlands, KNMI publishes a daily 4-day air quality forecast for the Netherlands using the LOTOS-EUROS chemical transport model, including forecasts of, among others, pollen and atmospheric composition.
- Satellite-based solar radiation nowcasting: Based on MSG-CPP cloud products, downward shortwave radiation over Europe is forecast up to 4 hours ahead using pySTEPS, with 15-minute time steps on a 0.05 × 0.05° grid.
- Weather station metadata archive: Scanned copies of the paper metadata archive of KNMI weather stations (active and discontinued), maintained until 2004, which is important for the quality assessment of climate time series.
- Third Cabauw intercomparison of nitrogen dioxide measurement instruments (CINDI-3): CINDI-3 was an international measurement campaign in 2024 at Cabauw in which researchers from 18 countries compared and calibrated NO₂ and other air quality measurements from ground-based instruments, among other purposes to validate satellite observations such as those from Sentinel-5p.
Nieuwe versies
- European climatological radar precipitation: High-quality, gauge-corrected radar precipitation data for Europe with hourly totals on a 2 km grid for the period 2013–2023. New in this version are improved radar–rain gauge merging with more local weighting, stricter quality controls and caps on extreme values, expanded rain gauge coverage (especially over Spain), and the addition of the years 2021–2023. A 24-hourly version is also available.
- Calibrated backscatter profiles from CHM15k ceilometers: Uncalibrated backscatter profiles from the CHM15k ceilometer (1064 nm) for 33 stations, including cloud base heights, cloud cover, and aerosol layer heights, with 10 m vertical and 12-second temporal resolution. This dataset is also available at 5-minute temporal resolution.