[From nobody Fri Jul 15 13:23:19 2005 From: Philip Gladstone <philip@gladstonefamily.net> To: Scott Pride <woodpro@hargray.com>, Discussion of data quality issues <wxqc@lists.gladstonefamily.net> Cc: Subject: [wxqc] Re: A comment on the data quality for the last two days Date: Fri, 15 Jul 2005 14:56:44 +0000 Content-Type: Multipart/mixed; boundary="NextPart_Webmail_9m3u9jl4l_11988_1121448195_1" --NextPart_Webmail_9m3u9jl4l_11988_1121448195_1 Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms060809020505080502080001" This is a cryptographically signed message in MIME format. --------------ms060809020505080502080001 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Scott, Yes, your data is almost certainly correct. Very small scale events do not show up in the analysis. I have noticed that my (personal) barometer readings are sometimes flagged when a sharp front moves through. Having said that, it would be nice if MADIS could somehow not flag these events. Actually, now I look more closely at your output, I see that MADIS flagged 7 readings, yet my script reported on 13 samples. Hmm -- that feels like a bug to me! I'll take a look. Philip Scott Pride wrote: > Philip, > I stand by my data as both days we had localized intense > thunderstorms producing large amounts of rain in short periods of time > and the corresponding rapid and steep decline in temp.. C3282, located > 8 miles NE from me, had similar rain amounts from the same storm on the > 13th and experienced a similar drop in temp during the same period. On > the 14th I watched the cell popup about 4 miles SW of me on radar, build > into a small but intense storm and then dissipate 4 miles NE of me > before reaching C3282 location. As this is typical summer weather for > the Lowcountry of South Carolina I expect I'll receive more data error > reports for the next two months as the data quality program can not take > into account these localized weather events. > > Scott Pride > > > ----- Original Message ----- > > *From:* Weather Quality <mailto:weather-qc@nospam.gladstonefamily.net> > *To:* woodpro@hargray.com <mailto:woodpro@hargray.com> > *Sent:* Thursday, July 14, 2005 9:05 PM > *Subject:* Weather data quality report for 2005-07-14 > > Date UTC SITE Alt (mb) Temp °F DewPt °F Wind Dir Speed knts > 14-JUL-2005 1916 CW3308 1013.7 +0.35 *80* *+7.42* 74 > +3.43 0 +137 0.0 +4.5 > 14-JUL-2005 1931 CW3308 1014.3 -0.25 *78* *+9.42* 75 > +2.60 0 +137 0.0 +4.5 > 14-JUL-2005 1946 CW3308 1014.2 -0.15 *78* *+9.42* 76 > +1.62 0 +137 0.0 +4.5 > 14-JUL-2005 2001 CW3308 1014.3 -0.42 *77* *+7.99* 75 > +1.62 0 +114 0.0 +2.4 > 14-JUL-2005 2016 CW3308 1014.3 -0.42 *76* *+8.99* 74 > +3.25 0 +114 0.0 +2.4 > 14-JUL-2005 2031 CW3308 1014.8 -0.92 *74* *+10.99* 72 > +4.91 63 +75 1.7 +0.7 > 14-JUL-2005 2051 CW3308 1013.8 +0.08 *73* *+11.99* 72 > +4.66 0 +114 0.0 +2.4 > 14-JUL-2005 2101 CW3308 1013.9 -0.17 *74* *+6.31* 73 > +2.96 0 +119 0.0 +3.6 > 14-JUL-2005 2130 CW3308 1013.3 +0.43 *74* *+6.05* 74 > +2.66 0 +119 0.0 +3.6 > 14-JUL-2005 2150 CW3308 1013.2 +0.53 *75* *+6.33* 75 > +1.66 0 +119 0.0 +3.6 > 14-JUL-2005 2205 CW3308 1013.3 +0.09 *75* *+6.51* 75 > +1.95 0 +115 0.0 +4.6 > 14-JUL-2005 2220 CW3308 1013.4 -0.01 *76* *+6.11* 76 > +0.95 0 +115 0.0 +4.6 > 14-JUL-2005 2230 CW3308 1013.4 -0.01 *76* *+6.03* 76 > +0.95 0 +115 0.0 +4.6 > 14-JUL-2005 Errs CW3308 0/91 7/91 0/91 0/91 0/91 > 14-JUL-2005 Smry CW3308 +0.2 0.40 +3 2.50 +0 1.74 -21 > 146 +2.5 1.1 > > Note that times are in UTC. The values displayed are 'Observed > Error' The error value is 'analysis - observed'. I.e. if your > observed value is higher than the computed value, then the error > will be negative. The error readings are listed in *bold*. The row > with the time of 'Smry' is a daily summary and the data is 'mean > standard-deviation' for each observation during that day. The 'Errs' > row contains the number of samples in error / the number of samples > (as seen by MADIS). This may indicate more observations that are > shown above. This is due to the differing limits used by this > reporting program and the MADIS program itself. > > For more information: > > * Daily graph > <http://weather.gladstonefamily.net/qchart?date=20050715&site=C3308>. > > * Quality checking information <http://www.wxqa.com>. > * WXQC Mailing list > <http://weather.gladstonefamily.net/mailman/listinfo/wxqc>. > > To stop this email, just click here > <http://weather.gladstonefamily.net/cgi-bin/weather-qc.pl?act=unsub&pwd=496c7a77b4> > --------------ms060809020505080502080001 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJgTCC AxswggKEoAMCAQICAwzAqjANBgkqhkiG9w0BAQQFADBiMQswCQYDVQQGEwJaQTElMCMGA1UE ChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNv 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