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--- kvalobs:kvalobs:qc17 [2008-09-16 14:10:39]
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-============
-|[[http://klima.dnmi.no/|KLIMA]]** **|[[http://instrument/obs/|OBSERVASJON]]** **|[[http://fou.dnmi.no/|FOU]]|[[http://it.dnmi.no/|IT]]|
-KVALOBS \\  Kvalitetssikring av observasjoner
-----
-======QC1-7 DETECTION OF COLLECTED VALUES FOR SEPARATION======
-Gabriel Kielland
-In the extended use and presentation of some observations there is a need to infere a simulated observation taken to cover a shorter time span than the one observed.
-In Kvalobs the separation procedure will be implemented for precipitation, maximum temperature and minimum temperature.
-The Kvalobs parameters are:
-  *RR_X - Amount of precipitation which has fallen during a period preceding the standard time of observation;
-  *TAX_X - Temperature in degrees C, maximum one minute value during a period preceding the standard time of observation;
-  *TAN_X - Temperature in degrees C, minimum one minute value during a period preceding the standard time of observation.
-The parameter values RR_X, TAX_X and TAN_X will be entered in the database together with values to indicate commencement and ending of the period. The time parameters are:
-  *KLSTART - Time of phenomenon commencement, 12 digits YYYYMMDDHHmm ("measurement from")
-  *KLOBS - Time of phenomenon ending, 12 digits YYYYMMDDHHmm ("measurement untill")
-The following flag values are available:
-|fd=0|Not considered as collected value|
-|fd=1|Normal observation, not collected value|
-|fd=2|The original value is a collected value not separated|
-|fd=3|Abnormal observation. The original value may be a collected value|
-====The rules for applying the flag values is the following:====
-"measurement from" minus "measurement untill" < 23 hours => fd=3
-"measurement from" minus "measurement untill" >= 23 hours og\\  "measurement from" minus "measurement untill" <= 25 hours => fd=1
-"measurement from" minus "measurement untill" > 25 hours og\\  "measurement from" minus "measurement untill" < 47 hours => fd=3
-"measurement from" minus "measurement untill" >= 47 hours og\\  "measurement from" minus "measurement untill" <= 73 hours => fd=2
-"measurement from" minus " measurement untill" > 73 hours => fd=3
-Note that whenever KLOBS or KLSTART is a non valid time indication the __observationen__ is flagged with fd=3.
-Also with KLOBS or KLSTART missing the observation is flagged with fd=3.
-=====Automatic separation of precipitation amount=====
-The separation algorithms is to be implemented with QC2. The observation stored as an RR_X parameter will then be translated into one or several RR_24 values. The observed value will be placed in the field //data.original// and the separated partial value will be placed in the field //data.corrected//.
-Last modified: Fri Dec 31 12:47:00 GMT 2004