# Conclusion

- There is a large international network of surface observation stations that record, among other things, air temperature, humidity, pressure, wind speed, wind direction, cloud type, cloud cover and precipitation.
- Satellites provide global, or at least hemispheric, coverage, from either polar or geostationary orbits, using remote instruments which operate at various frequencies in the electromagnetic spectrum.
- To complement surface data and observations from space, data from within the atmosphere itself can be gathered by radiosondes, aircraft and by radar.
- The collation and distribution of atmospheric data is coordinated by the World Meteorological Organisation.

OpenLearn - Watching the weather
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