The tenth IMSC, Beijing, China, 2007 - International Meetings on ...

For creating historical data of base a whole series of problems are solved.
• Rescue of historical data, recording data using modern technologies.
• Forming of historical data in united size (format).
• Forming of metadata of appropriate stations.
• Elimination of heterogeneity in meteorological variable connected with the changes in
methodic of observation and processing and changes of devices.
• Providing with ability of regular replenishment of current information.
During the formation of historical series the problem of filling the lack of meteorological
data, which evenly appeared in different periods of creating archives, is solved ( during
overwriting of information from punched card to magnetic tape, during overwriting from old
magnetic tape to modern technical methods ).
For the formation of historical data in united size (format) and of metadata special attention is
paid on the control of the quality of data and elimination of heterogeneity. <strong>The</strong> cause of
heterogeneity in data is changes in methodic of observation (change of quantity of term of
observation), replacement of devices, changes in methodic of processing data of
observation.<strong>The</strong>re are no program methods for homogenizing historical series in Armenia on
this stage, but it is very important. It is handmade.
Starting from aforesaid it becomes clear that for integrated solving of the problem of
homogeneous data formation, it is important to eliminate heterogeneity in the series of
meteorological elements connected with the changes in the methodic of observation and
processing, changes of devices, etc.
<strong>The</strong> KMA Ensemble Prediction System : the impact of Ensemble size increase
Joo-Hyung Son
Numerical Prediction Center, KMA
jhson@kma.go.kr
Hyung-Sook Jung
Numerical Prediction Center, KMA
Seon-Ok Moon
Numerical Prediction Center, KMA
Eun-Hee Jeon
Numerical Prediction Center, KMA
Dong-Joon Kim
Numerical Prediction Center, KMA
<strong>The</strong> Ensemble Prediction System (EPS), based on the breeding method with the global
spectral (KMA GDAPS) model was on operation at March 2001 at KMA. Since the revised
GDAPS (T426L40) was implemented for operation, the EPS has also been constructed with
T213L40M32 version at 00 and 12 UTC in July 2006.
<strong>The</strong> global spectral model with the slightly different initial conditions run 17 times included
the control forecast at 00 UTC and 12UTC. And then we have 32 members from the 12hourly
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