CAJ | 학술논문

利用2005-2011年的静止卫星、常规探空和重要天气报资料，文章选取了18次典型区域性雷暴大风过程，在分析500 hPa 天气形势基础上对导致雷暴大风的强对流云型进行了分类分析，其发展过程可划分为初始、发展、成熟和消亡四个阶段。对静止卫星观测的定量特征分析表明，对流云团中 IR1通道和水汽（WV）通道的亮温差基本为负值，其值的不断减小预示着强对流在持续发展；在监测和预报雷暴大风天气时，需要特别关注长椭圆形强对流云带的右侧和其右侧的孤立对流云团，尤其是 TBB（红外亮度温度）低负值区、TBB 高梯度区、IR1和 WV 通道亮温差值区及大梯度区均配合的区域。在定性分析的基础上对静止卫星 IR1与 WV 通道的亮温特征进行了定量统计分析，获得了雷暴大风出现站点附近的红外亮温、水汽亮温、IR1与 WV 通道亮温差和红外亮温梯度的分布情况，结果发现大部分站点的雷暴大风天气出现在以下时段：红外亮温由急剧下降到平缓下降之间的过渡期；IR1与 WV 通道亮温差由迅速下降转为缓慢下降或稳定少变的时间点前后，且多数处于IR1和 WV 通道亮温差由正转负临近的时间段内；红外亮温梯度达到最大的时间点附近或开始下降的时候。
이용2005-2011년적정지위성、상규탐공화중요천기보자료，문장선취료18차전형구역성뇌폭대풍과정，재분석500 hPa 천기형세기출상대도치뇌폭대풍적강대류운형진행료분류분석，기발전과정가화분위초시、발전、성숙화소망사개계단。대정지위성관측적정량특정분석표명，대류운단중 IR1통도화수기（WV）통도적량온차기본위부치，기치적불단감소예시착강대류재지속발전；재감측화예보뇌폭대풍천기시，수요특별관주장타원형강대류운대적우측화기우측적고립대류운단，우기시 TBB（홍외량도온도）저부치구、TBB 고제도구、IR1화 WV 통도량온차치구급대제도구균배합적구역。재정성분석적기출상대정지위성 IR1여 WV 통도적량온특정진행료정량통계분석，획득료뇌폭대풍출현참점부근적홍외량온、수기량온、IR1여 WV 통도량온차화홍외량온제도적분포정황，결과발현대부분참점적뇌폭대풍천기출현재이하시단：홍외량온유급극하강도평완하강지간적과도기；IR1여 WV 통도량온차유신속하강전위완만하강혹은정소변적시간점전후，차다수처우IR1화 WV 통도량온차유정전부림근적시간단내；홍외량온제도체도최대적시간점부근혹개시하강적시후。
Based on the satellite data,observational data of upper-air and significant weather report from 2005 to 2011,the weather situation at 500 hPa and the cloud patterns of 18 processes of thunderstorm high winds are classified and analyzed.The development of cloud patterns can be divided into 4 stages:initial, growing,mature and dissipating.The brightness temperature difference between IR1 channel and water vapor channel is mostly negative,and the number’s decreasing indicates that the severe convective clouds are still developing.We need to pay more attention to the right part or the right single-cell storm of the elongated strong convective clouds when we monitor and forecast the cloud system of thunderstorm high winds,especially the low TBB areas,the high TBB gradient part and the area coordinating with the nega-tive area of IR1 and WV channel brightness temperature difference.Quantitative statistical analysis of the characteristic value are made on the basis of subjective analysis,and we get the distribution of the infrared brightness temperature,water vapor brightness temperature,channel brightness temperature difference and infrared brightness temperature gradient near the sites observing the thunderstorm high winds.We discover that the majority of thunderstorm high winds often take place during the period when the infrared brightness temperature develops from a sharp decline to a gentle decline and at the time point when the channel brightness temperature gently slows down or becomes stable.Moreover,most examples are near the time period when the channel brightness temperature difference changes from positive to negative,and at the point when the infrared brightness temperature gradient approaches the largest area or begins to decline.