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kvalobs:kvoss:system:qc2:requirements:algorithms:qc2d-4periodesum [2010-05-28 10:25:48] gabrielk created |
kvalobs:kvoss:system:qc2:requirements:algorithms:qc2d-4periodesum [2022-05-31 09:29:32] (current) |
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| - | ====== QC2d-4 Statistics control | + | ====== QC2d-4 Statistics control |
| ==== Description of Method ==== | ==== Description of Method ==== | ||
| - | ... | + | The monthly accumulated precipitation RRM is calculated. |
| + | The corresponding normal monthly accumulated precipitation RRM' is retrieved form the climate data base. | ||
| + | Corresponding accumulated value at three neighbour stations are RRMn1, RRMn2, RRMn3. Corresponding reference accumulated value at three neighbour stations are RRMn' | ||
| + | |||
| + | An error is detected when | ||
| + | |||
| + | < | ||
| + | |||
| + | and at least two of the three following inequalities are satisfied | ||
| + | |||
| + | < | ||
| + | |||
| + | < | ||
| + | |||
| + | < | ||
| + | |||
| + | where tol1 is a tolerance value. | ||
| ==== Quality Control Level ==== | ==== Quality Control Level ==== | ||
| - | * ... | + | * QC2d-4 |
| Line 18: | Line 34: | ||
| It shall be possible to run the algorithm for | It shall be possible to run the algorithm for | ||
| - | * ... | + | * RR_1 |
| - | * ... | + | * RR_6 |
| - | * ... | + | * RR_12 |
| + | * RR_24 | ||
| ==== Characteristics of the data to which the method is applied ==== | ==== Characteristics of the data to which the method is applied ==== | ||
| Line 26: | Line 43: | ||
| __CONTROLINFO AND/OR USEINFO__ | __CONTROLINFO AND/OR USEINFO__ | ||
| - | * ... | + | * none |
| __TYPEID, PARAMIDS, OTHER METADATA__ | __TYPEID, PARAMIDS, OTHER METADATA__ | ||
| - | * ... | + | * all typeid |
| ==== Flag Settings ==== | ==== Flag Settings ==== | ||
| Line 36: | Line 53: | ||
| __SPECIFICATION OF CONTROLFLAGS TO BE SET FOR EXPECTED RESULTS OF THE ALGORITHM, I.E. CONSIDER BOTH POSITIVE AND NEGATIVE RESULTS__ | __SPECIFICATION OF CONTROLFLAGS TO BE SET FOR EXPECTED RESULTS OF THE ALGORITHM, I.E. CONSIDER BOTH POSITIVE AND NEGATIVE RESULTS__ | ||
| - | * ... | + | * fstat = 1 on no error detection |
| + | * fstat = 2 on error detection | ||
| __EXPECTIONS OF THE USEINFO FLAGS CORRESPONDING TO CONTROLINFO FLAG SETTINGS__ | __EXPECTIONS OF THE USEINFO FLAGS CORRESPONDING TO CONTROLINFO FLAG SETTINGS__ | ||
| - | * ... | + | * fstat = 2 -> controlinfo(2) = 2 |
| ==== Dependencies ==== | ==== Dependencies ==== | ||
| - | * ... | + | * Definition of neighbour station |
| - | * ... | + | * Definition of regions and related region reference station |
| - | * ... | + | * Extracts from KDVH |