Weather conditions and their measurements; precipitation, temperature, evapotranspiration, wind speed and direction. The scope of 'Meteorological geographical features' thematic data should be limited to local-level high-resolution (weather-related) data, typically observations.
• This includes synoptic observations from stations making up the WMO RA VI (European) Regional Basic Synoptic Network. The WMO operates a dedicated network (the Global Telecommunications System) to distribute observations and data products. Data exchange is governed by WMO Resolution 40, which provides for fre e and unrestricted exchange of observational data 'essential' for forecast activities.