Lightning Flash Measurements in the TOGA COARE Program

本研究的目的是：1)结合所有有效数据，利用TOGA COARE期间（1992年12月- 1993年3月）的船舶雷达体积扫描，比较红外卫星冷云历史、云对地闪电历史和单体结构。1993), 2)构建适合每种情况的探空数据，3)推导对流有效势能（CAPE），寻找产生闪电的MCS与不产生闪电的云系统之间环境的差异。此外，我们将利用在巴布亚新几内亚Kavieng获得的波形数字化闪电数据，4)确定先进闪电测向仪（ALDF）的探测效率与距离和方位角的关系，以及5)确定ALDF对云内闪电的灵敏度。

Orville/Abstract The objectives of this research are to 1) combine all valid data to compare the infrared satellite cold cloud histories, cloud- to-ground lightning histories, and cell structure using the ship radar volume scans during the TOGA COARE period (Dec. 1992-Mar. 1993), 2) construct sounding data appropriate for each case, 3) derive the convective available potential energy (CAPE), seeking differences in the environment between MCS's which produce lightning from those cloud systems that do not produce lightning. In addition, we will 4) determine the detection efficiency of the advanced lightning direction finder (ALDF) as a function of range and azimuth using waveform digitized lightning data obtained at Kavieng, Papua New Guinea, and 5) determine the sensitivity of the ALDF to intracloud lightning flashes.