Retrieve and store a trace of weather and irradiation data to get a data base for analyzing stability and quality of forecasts. Data is stored in an H2 database. Program architecture takes limited resources of a Raspberry Pi into account. For installing and running the project on a raspi, see my github project Java To Pi With Gradle and Idea.
German Weather Service (DWD - Deutscher Wetterdienst) provides an hourly forecast for the next ten days for some 5000 weather stations as XML files in two forms. MOSMIX_L is updated four times a day and contains more then 100 weather parameters. MOSMIX_S is updated 24 times a day about 20 minutes after every hour.
