How to encode varying RVR (present in US metars) to IWXXM?

wmo-im / iwxxm

XML schema and Schematron for aviation weather data exchange

https://old.wmo.int/wiswiki/tiki-index.php%3Fpage=TT-AvXML

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How to encode varying RVR (present in US metars) to IWXXM? #326

Closed zdKouba closed 1 year ago

zdKouba commented 1 year ago

If RVR varies significantly, it may be expressed as e.g. R01L/0600V1000FT in U.S. METARs. In this case we do not have the mean value of RVR at disposal. We have the lower (600FT) and upper (1000FT) limits of RVR instead. How such an RVR shall be converted to IWXXM, where only the mean RVR is defined? Shall 'meanRVR' be set to 183 (= equivalent of 600FT in meters) and 'meanRVROperator' to "above"?

mgoberfield commented 1 year ago

This issue is specific to United States and out of scope for this team. I invite you to re-raise this issue on the United States github IWXXM-US repository.