20020627: Synoptic Code max/mins

• To: Jeff Masters <jmasters@xxxxxxxxxxxxxxxx>
• Subject: 20020627: Synoptic Code max/mins
• From: Steve Chiswell <chiz@xxxxxxxxxxxxxxxx>
• Date: Thu, 27 Jun 2002 22:10:49 -0600 (MDT)

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
> (jmasters@xxxxxxxxxxxxxxxx)                                             (  )  
>  Chief Meteorologist                              /\ Home of the       (    ) 
>  The Weather Underground, Inc.               /\  /  \  /\       /\    (      )
>  300 N Fifth Ave #240                       /  \/    \/  \ /\  /  \    ------
>  Ann Arbor, MI 48104                 ______/              /  \/    \_   \\\\\
>  734-994-8824 (voice)                           Weather Underground      \`\`\
>  734-994-8919 (fax)                         http://www.wunderground.com
> 

• References:
  • Synoptic Code max/mins
    • From: Jeff Masters