CAJ | 학술논문

以2003年6月29日-7月11日淮河流域梅雨期强降水为研究对象，采用ERA Interim再分析资料和站点降水资料，综合分析该期间强降水时段水汽收支。结果表明：降水主要来自低层水汽辐合的贡献，而与低空急流相联系的水汽辐合具有显著的日变化，即后半夜至凌晨最大，午后最小，并由此造成了梅雨期强降水独特的日变化特征，最强降水出现在后半夜至凌晨；蒸发主要集中在白天，夜晚很小，数值约为降水量的15%，表明局地水循环的重要作用。针对淮河流域强降水区进行的水汽收支计算表明，水汽收支方程左、右两边数值在整个强降水时段具有较好的一致性，相关系数为0.77；对整个强降水期取时间平均，获得的水汽收支方程左、右两端数值的偏差为18%。
이2003년6월29일-7월11일회하류역매우기강강수위연구대상，채용ERA Interim재분석자료화참점강수자료，종합분석해기간강강수시단수기수지。결과표명：강수주요래자저층수기복합적공헌，이여저공급류상련계적수기복합구유현저적일변화，즉후반야지릉신최대，오후최소，병유차조성료매우기강강수독특적일변화특정，최강강수출현재후반야지릉신；증발주요집중재백천，야만흔소，수치약위강수량적15%，표명국지수순배적중요작용。침대회하류역강강수구진행적수기수지계산표명，수기수지방정좌、우량변수치재정개강강수시단구유교호적일치성，상관계수위0.77；대정개강강수기취시간평균，획득적수기수지방정좌、우량단수치적편차위18%。
Moisture budgets during heavy rainfall events in the Huai River Basin from June 29 to July 11 of the 2003 Meiyu season are stud-ied by using the ERA Interim reanalysis data and rain gauge records. It is shown that the water supply to the rainfall is mainly from the low-lev-el convergence of moisture. The moisture convergence associated with the low-level jet has a remarkable diurnal variation with a maximum during midnight to early morning and an afternoon minimum, which produces a characteristc precipitation diurnal cycle during the Meiyu sea-son. The evaporation mainly concentrates in the daytime and constitutes about 15%of the amount of precipitation, indicating the importance of the regional moisture recycling. Over the Huai River Basin, the left and right sides of the moisture budget equation have a good consistency with a correlation coefficient of 0.77 throughout the 2003 Meiyu season. When averaged over time, a moisture imbalance of 18%is obtained.