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A Study on the Influence of Aerological Observation Data Assimilation at Honam Area on Numerical Weather Prediction  

Ryu Chan-Su (Center for Asia Monsoon & Climate Environment Research, Chosun University)
Won Hyo-Sung (Gwangju Regional Meteorological Offic, Korea Meteorological Administration(KMA))
Lee Soon-Hwan (Center for Asia Monsoon & Climate Environment Research, Chosun University)
Publication Information
Journal of the Korean earth science society / v.26, no.1, 2005 , pp. 66-77 More about this Journal
Abstract
Aerological observation at Heuksando located in south-western part of Koran Peninsula has been started at 1 June 2003. In order to clarify the improvement of meteorological prediction quality. it is necessary to compare between aerological data observed at Gawngju and Heuksando and to make clear the influence of Heuksando data assimilation. Therefore numerical simulations were carried out with High resolution meterological prediction system based on MM5(The 5th Generation Mesoscale Model). The pattern of wind and temperature field observed at Heuksando and Gwangju are different due to land surface friction End Sensible heat flux at surface and the wind field Simulated With Gwangju and Heuksando aerological data agree well with observation wind field. Although the amount of precipitation in these experiments is underestimated. the area and starting time of precipitation around Honam province in case with Heuksando data is more reliable that without the data.
Keywords
data assimilations; MM5; numerical simulation; mesoscale model; precipitation;
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