Various data sources are needed to describe the weather situation at a given place.
The data used by meteoblue originates from various weather services and sources. Initial conditions are usually determined through the help of measurements, which cover some of the most important locations and weather variables, but describe only a fraction of the surface of the Earth and weather processes. These measurements are then incorporated into model simulations, to determine the state of the weather over the entire globe. After the model run, the output data may be validated and corrected through measurements and observation data.
The three main data sources are therefore:
- Measurements: these are data obtained by instruments which measure weather variables;
- Observation: these are records obtained by manual or mechanical sensing and transformed into weather variables;
- Modelling: these are data obtained by simulation.
You can find further details about each data source by clicking on the link to the respective page.