GSM based weather station for the Weather Underground Network

Currently full description is only available in German using the link above.

I'm running this weather station on our paramotor airfield.

Hardware:

Sensors:

wind speed (from WH1080)
wind direction (from WH1080)
temperature (Maxim DS18B20)
humidity (Honeywell HIH-5031)
pressure (Freescale MPL3115A2)
rain gauge (from WH1080)
solar radiation (8x BPW34)