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kvalobs:kvoss:system:qc2:requirements:algorithms:rarr_24 [2011-12-05 12:13:41]
alexanderb Updated documentation for 1.3.1 |
kvalobs:kvoss:system:qc2:requirements:algorithms:rarr_24 [2022-05-31 09:29:32] (current)
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| The calculated RR_24 updates the corrected value in the kvalobs database. | The calculated RR_24 updates the corrected value in the kvalobs database. |
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| | A warning is given if fmis=0 and original!=-1. |
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| ==== Configuration and Parameters ==== | ==== Configuration and Parameters ==== |
| Further configuration options are: | Further configuration options are: |
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| * endpoint_cflags (default: fmis=4&fd=2) and endpoint_uflags (default: no constraints) specify the flags for accumulation endpoints. Endpoints not matching these flags will not be detected. | ^ Option ^ Default ^ Description ^ |
| * missingpoint_cflags (default: fmis=3&fd=2) and missingpoint_uflags (default: no constraints) specify the flags for the missing points before the accumulation. | | endpoint_cflags | fmis=[04]&fd=2&fhqc=0 | specify the flags for accumulation endpoints. Endpoints not matching these flags will not be detected | |
| * before_cflags (default: fmis=[04]) and before_uflags (default: no constraints) specify the flags for a data point before the start of the accumulation period. | | endpoint_uflags | no constraints | ::: | |
| * neighbor_cflags (default: fd=1) and neighbor_uflags (default: U2=0) specify requirements for the neighbor stations used for the interpolations. Neighbor stations that do not match these flags will be ignored. | | missingpoint_cflags | fmis=3&fd=2 | specify the flags for the missing points before the accumulation | |
| * warn_and_stop_cflags (default: fhqc=)0() and warn_and_stop_uflags (default: no constraints) define for which flags for the accumulation point or the missing points before the accumulation the only action should be to print a warning and stop. | | missingpoint_uflags | no constraints | ::: | |
| * update_flagchange (default: fd=7;fmis=3->fmis=1;fmis=0->fmis=4) flags to change for the accumulation endpoint and the missing points. | | neighbor_cflags | fd=1 | specify requirements for the neighbor stations used for the interpolations. Neighbor stations that do not match these flags will be ignored. | |
| | | neighbor_uflags | U2=0 | ::: | |
| * ParamId (no default) selects the parameter ids to use. The only value tested here is 110 (RR_24). | | warn_and_stop_cflags | fhqc=)0( | define for which flags for the accumulation point or the missing points before the accumulation the only action should be to print a warning and stop | |
| * tids accepted typeids | | warn_and_stop_uflags | no constraints | ::: | |
| * measurement_hour (default: 6) specifies the hour at which the data are expected. Series containing data with other times will be rejected with a warning. | | update_flagchange | %%fd=7;fmis=3->fmis=1%% | flags to change for the accumulation endpoint and the missing points | |
| | | ParamId | --- | selects the parameter ids to use. The only value tested here is 110 (RR_24). | |
| | | tids | --- | accepted typeids | |
| | | measurement_hour | 6 | specifies the hour at which the data are expected. Series containing data with other times will be rejected with a warning. | |
| | | min_neighbors | 1 | specifies the minimum number of neighbor stations with good data | |
| | | max_neighbors | 5 | specifies the maximum number of neighbor stations to use | |
| | | InterpolationDistance | 100 | radius in km inside which to search neighbor stations | |
| | | warning_distance_closest_neighbor | 50 | minimum neighbor distance to print an INFO message about not so good neighbors | |
| | | days_before_no_neighbor_warning | 14 | specifies the number of days after which a WARN is written to the logfile if there are not enough neighbor data | |
| | | days_before_redistributing_zeroes_warning | 14 | specifies the number of days after which a WARN is written to the logfile if a non-dry accumulation has only dry neighbors | |
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| ==== Parameters ==== | ==== Parameters ==== |
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| This algorithm has only been tested for paramid 110. | This algorithm has only been tested for paramid 110. |
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| | ==== Log Messages ==== |
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| | There might be many different WARN messages in the log file ''/var/log/kvalobs/kvqc2d.log'' from this algorithm. These messages are (as of version 1.3.14pre3): |
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| | * ''original = missing/rejected for endpoint'' -- an endpoint (i.e. a row matching ''endpoint_?flags'') has a missing original value; this might also indicate a row which somehow obtained the same flags as an endpoint. |
| | * ''fmis=0 and original!=-1 for endpoint'' -- fmis should only be 0 for dry accumulations [[kvalobs:kvalobs-flagg#manglende_observasjon_missing|flagg-spec]] |
| | * ''fd=2 and original!=corrected for endpoint'' -- redistribution has apparently been performed without setting fd=7 |
| | * ''endpoint matches warn_and_stop_flags'' or ''missing point ... matches warn_and_stop_flags for accumulation'' -- a row matches ''warn_and_stop_?flags'', which is ''never'' by default |
| | * ''missing point ... has different fd flag than endpoint'' -- a redistribution seems to have been done without setting fd flags consistenly |
| | * ''missing point ... has fmis!=3 while fd=2 for endpoint'' -- normally, all missing rows (if they exist) should have fmis=3 before redistribution |
| | * ''missing point ... has fmis!=1 while fd=7 for endpoint'' -- normally, all missing rows should have fmis=1 after redistribution |
| | * ''found ... but expected ... rows with corrected values for accumulation ...'' -- normally, only one row should have a corrected value if the endpoint has fd=2, and all rows if fd=6/7 |
| | * ''redistributed sum ... starting ... differs from original in endpoint ...'' -- the sum of corrected values in the accumulation period does not match the original value in the endpoint row; unless fhqc!=0, an attempt will be made to fix this automatically |
| | * ''fhqc mess for accumulation from .. to endpoint ...'' -- some rows in the accumulation period have fhqc=0, while others have fhqc!=0 |
| | * ''suspicious row ... before endpoint ..; giving up'' -- a row with missing original value has been found before the assumed accumulation period; to avoid a wrong redistribution in case the correct start date for the accumulation has not been detected, the algorithm stops |
| | * ''no really good neighbors at obstime ... for accumulation ending ...'' -- the nearest neighbor is quite far away (more than ''warning_distance_closest_neighbor'') |
| | * ''accumulation ... > 0 would be redistributed to zeros for endpoint ...'' -- there is non-zero accumulated precipitation, but all accessible neighbor stations are dry so that the redistribution cannot be performed |
| | * ''could not avoid difference of ... between distributed sum and accumulated value at endpoint ...'' -- some precipitation has been lost due to numerical (rounding) problems |
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