CAJ | 학술논문

利用武汉MP-3000A型地基微波辐射计,采集降水前大气水汽含量和云液态水含量数据,结合历史观测的气象资料,详细分析了降水前一小时大气水汽含量、云液态水含量的分布和演变与降水的关系,结果表明：1）大雨开始前一刻对应的V（大气水汽含量）值≥6.5 cm,中雨对应的V值接近6 cm,小雨对应的V值在5～6 cm之间;2）V值超过5 cm,L（云液态水含量）值超过1 mm可以作为判断降水临近的一个参考指标;3）降水开始前一小时,大气水汽含量的增长大致分为平稳增长和先增长到一个峰值然后下降,在临近降水前5～10 min又再次跃增这两种情况;4）将各量级降水前一小时的L、V值去除背景值后可发现,L值的大小、波动范围及波动趋势基本无变化;V值的大小和波动范围有所减小,但其波动趋势无明显变化;5）将数据做FFT变换后,V、L值在第一个转折点处表现出的不同特征可作为判断降水临近的一个指标。
이용무한MP-3000A형지기미파복사계,채집강수전대기수기함량화운액태수함량수거,결합역사관측적기상자료,상세분석료강수전일소시대기수기함량、운액태수함량적분포화연변여강수적관계,결과표명：1）대우개시전일각대응적V（대기수기함량）치≥6.5 cm,중우대응적V치접근6 cm,소우대응적V치재5～6 cm지간;2）V치초과5 cm,L（운액태수함량）치초과1 mm가이작위판단강수림근적일개삼고지표;3）강수개시전일소시,대기수기함량적증장대치분위평은증장화선증장도일개봉치연후하강,재림근강수전5～10 min우재차약증저량충정황;4）장각량급강수전일소시적L、V치거제배경치후가발현,L치적대소、파동범위급파동추세기본무변화;V치적대소화파동범위유소감소,단기파동추세무명현변화;5）장수거주FFT변환후,V、L치재제일개전절점처표현출적불동특정가작위판단강수림근적일개지표。
With the collected data of vapor content and cloud liquid water content before precipitation by the MP-3000A in Wuhan and the meteorological data of historical observations,the distribution and evolution of atmospheric vapor,cloud liquid water and vapor density,and their relationship with precipitation one hour before precipitation were analyzed.The results show that： 1） Before the start of the heavy rain,V（vapor content） value ≥ 6.5 cm,the value of V corresponding to moderate rain was close to 6 cm,the V value corresponding to light rain was between 5~6 cm;2） The V value exceeds to 5 cm and the L value（cloud liquid water content） exceeds to 1 mm could be used as an indicator of close to precipitation;3） One hour before the start of precipitation,the growth of vapor content could be divided into two condition： one grew steadily and the other increased first to a peak and then declined,and increased again a few minutes before precipitation;4） After the removal of background values of L、V one hour before precipitation,the value fluctuation range and trend of L basically have no change;the value of V and its fluctuation range decreased,but the fluctuation trend had no significant change;5） After the Fast Fourier Transform,the different characters of V and L value in the first turning point could be used as an indicator of approaching precipitation.