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Greg, Ah... the joys of processing the metar "standard". I made a C program that makes corrections to certain obvious errors in the metars. Over the years I've been adding more and more "events". It's up to 25 now, with 2 more waiting for my attention... The international sites are the most error prone, but good ole USA sites are not immune. Quality control at data entry sounds like a wonderful and logical idea. Therefore, according to Murphy's Law, it'll never happen! Steve On Wed, Aug 9, 2017 at 10:21 AM, Greg Thompson <gthompsn@xxxxxxxx> wrote: > > Daryl, > > The number of *exceptions* for METARs, TAFs, and many other NWS products > is insane. My software will ingest the incorrect MR0C just fine, and my > program that seeks out unknown 4-letter IDs found in the METAR DB I > maintain but are not known lat/lon will reveals many sites that were typos. > > When will someone ever employ software checking upon data entry to prevent > things like this? Never at the rate we're going. The worse condition in > my opinion is when the time stamp is completely wrong - such as POST-dated > METAR data. It happens all the time and they merrily end up in final files > as supposedly good info. > > --Greg > > > On Tue, Aug 8, 2017 at 10:14 PM, daryl herzmann <akrherz@xxxxxxxxxxx> > wrote: > >> >> Oh the fun of processing METARs. Behold the METAR site MROC Juan >> Santamaria, Costa Rica. Here's the 0z ob >> >> SACS31 MROC 090000 >> METAR >> MROC 090000Z 25005KT 5000 BR FEW005 SCT015 23/23 A2993 NOSIG= >> >> and here's the 1z ob: >> >> SACS31 MROC 090100 >> METAR >> MR0C 090100Z 24005KT 3000 BR FEW002 BKN010 23/22 A3000 NOSIG= >> >> Notice what's wrong? :) So the Oh became a zero! So the KWBC collective >> then missed it. >> >> SACA35 KWBC 090100 >> METAR >> ...snipped... >> MROC NIL= >> >> So should I account for this in my METAR ingesting code somehow or alas, >> the 1z ob on 9 August 2017 is lost forever for MROC :( >> >> daryl >> >> -- >> /** >> * daryl herzmann >> * Systems Analyst III -- Iowa Environmental Mesonet >> * https://mesonet.agron.iastate.edu >> */ >> >> _______________________________________________ >> NOTE: All exchanges posted to Unidata maintained email lists are >> recorded in the Unidata inquiry tracking system and made publicly >> available through the web. Users who post to any of the lists we >> maintain are reminded to remove any personal information that they >> do not want to be made public. >> >> Data-curation mailing list >> Data-curation@xxxxxxxxxxxxxxxx >> For list information, to unsubscribe, or change your membership options, >> visit: http://www.unidata.ucar.edu/mailing_lists/ >> > > > _______________________________________________ > NOTE: All exchanges posted to Unidata maintained email lists are > recorded in the Unidata inquiry tracking system and made publicly > available through the web. Users who post to any of the lists we > maintain are reminded to remove any personal information that they > do not want to be made public. > > Data-curation mailing list > Data-curation@xxxxxxxxxxxxxxxx > For list information, to unsubscribe, or change your membership options, > visit: http://www.unidata.ucar.edu/mailing_lists/ > >
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