200 - Typhoon Committee

ESCAP/WMO
Typhoon Committee Annual Review 2007
hydrological data, quality management system, and
improvement of the related technology.
In the quality control system, it is impossible to construct
the fully perfect automatic system by mathematical
algorithms or methods. Although the fully perfect
automatic system is constructed, it can be undesirable
because this system can not treat all outlier data.
Therefore, it is required that quality control system should
include the manual procedure and treatment procedure.
Also, before the construction of the system, all guideline
which deals with outlier data and its treatment procedure
should be determined. Figure 2.2 shows the procedure
of quality control system. Figure 2.3 and 2.4 represents
graphic user interface of the quality system for rainfall
data and stage data.
It is very important to confirm and check out the
hydrological data because the hydrological data have
many margins occurred error caused by environmental
change in the field, miss-operation of observation
instrument, mistake of person observing in field and any
other factor. Therefore observed record(original data)
that is acquired from field observation, magnetic record,
data logger, telemeter and so on must be confirmed and
checked out to use it.
Figure 2.2 Procedure of quality control system Figure 2.3 Quality control of rainfall data Figure 2.4 Quality control of
stage data
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