High-resolution maps of ground-based observations for the Netherlands

Based on a combination of ground-based observations from multiple networks, this data set provides high-resolution maps of surface weather in the Netherlands. We have developed an innovative way of statistically blending (a) weather observations from our official network, (b) citizen weather observations from the wow.knmi.nl network and (c) land cover type. This statistical blend results in weather maps which have a much higher spatial detail as well as higher local accuracy than maps based only on our official network. In addition, we provide not only a best estimate, but also a quantified uncertainty estimate of the local weather. Currently, we provide this service for air temperature, but we are in the process of extending the service to 10 m wind speed, relative humidity and 10 m wind gust.