20020627: Synoptic Code max/mins

Jeff,

The WMO manual on codes 386 part II addresses regional reporting practices
including the time period that the max/min is valid for. The GEMPAK dcmetr
decoder takes these differences into account as to what time is assigned to
the max/min value.

Steve Chiswell
Unidata User Support

On Wed, 26 Jun 2002, Jeff Masters wrote:

> 
> I've been looking at the max/mins reported in the synoptic code obs across
> the world, and have discovered that the "standards" for reporting max/mins
> vary widely from one country to the next. For example, the UK reports a
> min at 6Z for the 12 hour period ending at 6Z. Iceland reports mins at 9z,
> presumably for the 12 hours ending at 9Z. But in Canada, the min reported
> at 18Z is the 24 hour min, and the max reported at 12Z is the 24 hour max
> for the period 6Z to 6Z. Does anyone know of a list of the various
> international standards for reporting max and mins?
> 
> Thanks,
> ------------------------------------------------------------------------------
>  Jeff Masters
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>