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kvalobs:kvoss:system:qc2:requirements:algorithms:diptest01 [2011-01-24 12:58:34] paule |
kvalobs:kvoss:system:qc2:requirements:algorithms:diptest01 [2022-05-31 09:29:32] |
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- | ====== Dip test - QC2d-1 - Revision 01====== | ||
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- | {{: | ||
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- | The flag fs=2 is detected on the observation A(t), the previous value A(t-1) is also flagged fs=2, and the next previous value A(t-2) is flagged fs=1. | ||
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- | < | ||
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- | | A(t) - A(t-2) | < | A(t-1) - A(t-2) | | ||
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- | | A(t) - A(t-1) | > DELTA | ||
- | </ | ||
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- | where DELTA is dependent on the parameter | ||
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- | < | ||
- | set fs=9 for A(t-1) | ||
- | set fs=6 for A(t) | ||
- | </ | ||
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- | A(t-1) receives a corrected value by interpolation. The interpolation method can be linear or by [[Akima splines]]. | ||
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- | Relevant parameters are all those subject to the step check (QC1-3a): | ||
- | | ** 1** | AA | | ||
- | | ** 2** | BI| | ||
- | | ** 81** | FF| | ||
- | | ** 85** | FM| | ||
- | | ** 86** | FX| | ||
- | | ** 87** | FX_1| | ||
- | | ** 88** | FX_6| | ||
- | | ** 89** | FX_12| | ||
- | | ** 90** | FG_1| | ||
- | | ** 91** | FG_6| | ||
- | | ** 92** | FG_12| | ||
- | | ** 93** | FX_X| | ||
- | | ** 94** | FG_X| | ||
- | | ** 104** | RA| | ||
- | | ** 105** | RR_01| | ||
- | | ** 113** | SS_1| | ||
- | | ** 123** | RT_1| | ||
- | | ** 172** | PH| | ||
- | | **174** | POM| | ||
- | | ** 175** | PON| | ||
- | | ** 176** | POX| | ||
- | | ** 177** | PP| | ||
- | | ** 197** | QE| | ||
- | | ** 198** | QL| | ||
- | | ** 199** | QLX| | ||
- | | ** 200** | QO| | ||
- | | ** 201** | QOX| | ||
- | | ** 211** | TA| | ||
- | | ** 212** | TAM| | ||
- | | ** 213** | TAN| | ||
- | | ** 215** | TAX| | ||
- | | ** 221** | TG| | ||
- | | ** 222** | TGM| | ||
- | | ** 223** | TGN| | ||
- | | ** 225** | TGX| | ||
- | | **227** | TJM| | ||
- | | ** 262** | UU| | ||
- | | ** 264** | UN| | ||
- | | ** 265** | UX| | ||
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- | ===== Dip test flags ===== | ||
- | |Flag value|Definition|useinfo(2) consequence| | ||
- | |**fs=4**|Kontrollert. Mistanke om feil detektert i QC1-3. Ingen tilsvarende feil i QC2d-1. Ingen korreksjon.|**Friskmeldt.**| | ||
- | |fs=5|Kontrollert. Ingen mistanke om feil detektert i QC1-3. Mistanke om feil detektert i QC2d-1.Ingen korreksjon.|Originalverdi noe mistenkelig.| | ||
- | |**fs=9**|Kontrollert. Observert endring høyere enn testverdi. Korrigert automatisk.|**Originalverdi sikkert feilaktig.**| | ||
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- | ===== Previous met.no dip tests ===== | ||
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- | The report 24/93 KLIMA " | ||
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- | [[http:// | ||
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- | Comparison between Øgland' | ||
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- | For wind and temperature the Kvalobs dip test will flag more often than by Øgland' | ||