Meteorological hazard identification apparatus, moving craft and methods

A meteorological hazard identification apparatus which performs a method comprising receiving a plurality of measurement sample tracks, each of the measurement sample tracks having been generated by a moving craft, such as an aircraft, using a measurement device mounted on the craft. Each of the measurement sample tracks comprises a plurality of captured samples of one or more meteorological parameters, such as particle concentration, measured with respect to geographical co-ordinates providing a location of the captured sample. The method includes storing the plurality of sample tracks into a data store, retrieving each of the measurement tracks from the data store, combining the plurality of measurement tracks, to form, with respect to mapping information, a representation at geographical locations within a region, of a variation in the one of more meteorological parameters with respect to displacement within the region, and generating a representation of the variation of the one or more meteorological parameters with respect to displacement within the region with respect to a map of the Earth for access by one or more devices for display to users. Also disclosed is a method of protecting an aero engine in accordance with the hazard identified.