QC2d-4 Statistics control Accumulation 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'1, RRMn'2, RRMn'3.
An error is detected when
| RRM - RRM' | > tol1
and at least two of the three following inequalities are satisfied
| RRMn1 - RRMn'1 | < tol1
| RRMn2 - RRMn'2 | < tol1
| RRMn3 - RRMn'3 | < tol1
where tol1 is a tolerance value.
Quality Control Level
- QC2d-4
Run Parameters
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
CONTROLINFO AND/OR USEINFO
- none
TYPEID, PARAMIDS, OTHER METADATA
- all typeid
Flag Settings
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
- fstat = 2 → controlinfo(2) = 2
Dependencies
- Definition of neighbour station
- Definition of regions and related region reference station
- Extracts from KDVH