報告書番号

E283010

タイトル（和文）

OBSERVATION OF VERTICAL AEROSOL DISTRIBUTIONIN THE MIXED LAYER BY LIDAR

タイトル（英文）

OBSERVATION OF VERTICAL AEROSOL DISTRIBUTIONIN THE MIXED LAYER BY LIDAR

概要 （図表や脚注は「報告書全文」に掲載しております）

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概要 （英文）

MIXED LAYER OBSERVATIONS WERE CONDUCTED BY ALIDAR AND DOPPLER SODAR AT TAKEYAMA TESTING & RESEARCH CENTER CRIEPI,LOCATED AT THE SOUTHWEST SIDE OF THE KANTO PLAINS. THE OBSERVED MIXED LAYER GROWTH WAS COMPARED WITH A SIMPLE NUMERICAL MODEL USING OBSERVED TEMPERATURE GRADIENTS AND SURFACE HEAT FLUX.THE MODEL WELL APPROXIMATED THE OBSERVATION.THE VERTICAL DISTRIBUTION OF AEROSOL SHOWED DIFFERENT CHARACTERISTICS DEPENDING ON THE STABILITY OF THE LAYERS.WHEN THE STABILITY WAS NEUTRAL THE AEROSOL DENSITY DECREASED LINEARLY WITH HEIGHT.IN THE CASE OF THE MIXED LAYER,AEROSOL DENSITY DECREASED SLOWLY IN THE LOWERLAYER AND SHARPLY IN THE UPPER. THESE REPRESENTATIONS OF THE AEROSOL AND POTENTIAL TEMPERATURE MEASURED AT THE SAME TIME SHOWED THAT THE THICKNESS OF THE ENTRAINMENT LAYER WAS 0.2 OF THE WHOLE MIXED LAYER.

報告者

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