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논문 기본 정보

자료유형
학술저널
저자정보
김덕래 (국립환경과학원) 권태영 (강릉원주대학교)
저널정보
한국기상학회 대기 대기 Vol.21 No.3
발행연도
2011.9
수록면
273 - 284 (12page)

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This study investigates the characteristics of satellite brightness temperature (TB) and rainfall intensity over the life cycle of convective cells. The convective cells in the three event cases are detected and tracked from the growth stage to the dissipation stage using the half-hourly infrared (IR) images. For each IR images the values of minimum, mean, and variance for the convective cell’s TBs and the sizes of convective cells are calculated and also the relationship between TB and rainfall intensity are investigated, which is obtained using the pixel values of satellite TB and the ground rainfall intensity measured by AWS (Automatic Weather Station). At the growth stage of the convective cells, the TB's variance and cloud size consistently increased, whereas TB’s minimum and mean consistently decreased. At this stage the empirical relationships between TB and rainfall intensity are statistically significant and their slopes (intercepts) in absolute values are relatively large (small) compared to those at the dissipation stage. At the dissipation stage of the convective cells, the variability of TB distributions shows the opposite trend. The statistical significance of the empirical relationships are relatively weak, but their slopes (intercepts) vary over life cycle. These results indicate that satellite IR images can provide valuable information in identifying the convective cell’s maturity stage and in the growth stage, they may be used in providing considerably accurate rainfall estimates.

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Abstracts
1. 서론
2. 자료 및 연구방법
3. 사례분석
4. 발단 단계에 따른 휘도온도와 강우강도 사이의 경험적 관계식
5. 요약 및 결론
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UCI(KEPA) : I410-ECN-0101-2013-453-000799199