Lightning Flash Measurements in the TOGA COARE Program

TOGA COARE 计划中的闪电测量

• 批准号: 9527935
• 负责人: Richard Orville
• 金额: $ 8万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527935&HistoricalAwards=false
• 关键词: Lightning; Flash; Measurements; TOGA; COARE

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.

奥维尔/摘要 本研究的目的是：（1）结合联合收割机的有效资料，比较TOGA COARE期间使用船舶雷达体扫描的红外卫星冷云历史、云地闪电历史和单体结构（1992年12月~ 1993年3月），2）建立适合于每种情况的探空资料，3）推导对流有效位能（CAPE），寻找产生闪电的MCS与不产生闪电的MCS之间的环境差异。 此外，我们将4）使用在巴布亚新几内亚卡维恩获得的波形数字化闪电数据，确定高级闪电定向仪（ALDF）的探测效率作为距离和方位角的函数，以及5）确定ALDF对云内闪电的灵敏度。