This part specifies the selection, mapping, manual observation and recording methods of daytime and nighttime meteorological vis bility targets, and describes meteorological vis bility observation instruments and installation and use methods. This section applies to the observation of meteorological vis bility in surface meteorological observations and other meteorological observations.
QX/T 47-2007 history
2007QX/T 47-2007 Specincations for surface meteorological observation.Part3: Measurement of meteorological visibility