AMC2 MET.TR.205(e)(1) Reporting of meteorological elements

• ED Decision 2022/004/R found in: ATM/ANS Provision of Services (2017/373) (Mar 2025)

AMC2 MET.TR.205(e)(1) Reporting of meteorological elements ED Decision 2022/004/R CLOUD — AUTOMATIC OBSERVING SYSTEM When an automatic observing system is used to report local routine report, local special report, METAR and SPECI: (a) when the cloud type cannot be observed, the cloud type in each cloud group should be replaced by ‘///’; (b) when no clouds are detected, it should be indicated by using the abbreviation ‘NCD’; (c) when cumulonimbus clouds or towering cumulus clouds are detected and the cloud amount and/or the height of cloud base cannot be observed, the cloud amount and/or the height of cloud base should be replaced by ‘///’; and (d) when the sky is obscured and the value of the vertical visibility cannot be determined due to a temporary failure of the system/sensor, the vertical visibility should be replaced by ‘///’. AMC2 MET.TR.205(e)(1) Reporting of meteorological elements ED Decision 2022/004/R CLOUD — AUTOMATIC OBSERVING SYSTEM When an automatic observing system is used to report local routine report, local special report, METAR and SPECI: (a)       when the cloud type cannot be observed, the cloud type in each cloud group should be replaced by ‘///’; (b)       when no clouds are detected, it should be indicated by using the abbreviation ‘NCD’; (c)       when cumulonimbus clouds or towering cumulus clouds are detected and the cloud amount and/or the height of cloud base cannot be observed, the cloud amount and/or the height of cloud base should be replaced by ‘///’; and (d)       when the sky is obscured and the value of the vertical visibility cannot be determined due to a temporary failure of the system/sensor, the vertical visibility should be replaced by ‘///’.