...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Global distributions and occurrence rates of transient luminous events
【24h】

Global distributions and occurrence rates of transient luminous events

机译：全球分布和出现的比率瞬态发光的事件

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report the global transient luminous event (TLE) distributions and rates based on the Imager of Sprites and Upper Atmospheric Lightning (ISUAL) experiment onboard the FORMOSAT-2 satellite. ISUAL observations cover 45°S to 25°N latitude during the northern summer and 25°S to 45°N latitude during the northern winter. From July 2004 to June 2007, ISUAL recorded 5,434 elves, 633 sprites, 657 halos, and 13 gigantic jets. Surprisingly, elve is the dominant type of TLEs, while sprites/halos are a distant second. Elve occurrence rate jumps as the sea surface temperature exceeds 26 degrees Celsius, manifesting an ocean-atmosphere-ionosphere coupling. In the ISUAL survey, elves concentrate over the Caribbean Sea, South China Sea, east Indian Ocean, central Pacific Ocean, west Atlantic Ocean, and southwest Pacific Ocean; while sprites congregate over central Africa, Japan Sea, and west Atlantic Ocean. The ISUAL experiment observed global rates of 3.23, 0.50, 0.39, and 0.01 events per minute for elves, sprites, halos, and gigantic jets, respectively. Taking the instrumental detection sensitivity and the restricted survey area into account, the corrected global occurrence rates for sprites and elves likely are a factor of two and an order of magnitude higher, respectively. ISUAL observations also indicate that the relative frequency of high peak current lightning (>80 kA) is 10 times higher over the oceans than over the land. On the basis of the corrected ISUAL elve global occurrence rate, the total electron content at the lower ionosphere above elve hot zones was computed to be elevated by more than 5%.
机译：我们报告全球瞬态发光的事件(框架)分布和利率根据成像仪精灵和上层大气闪电(视觉)实验FORMOSAT-2上卫星。纬度在北部夏季和25°S在北方冬天北纬45°。2004年7月到2007年6月,视觉记录5434精灵,633精灵,657晕,13巨大飞机。tl,而精灵/晕位居第二。精灵出现率跳跃在海面温度超过摄氏26度,展现一个ocean-atmosphere-ionosphere耦合。在加勒比海,南中国海,东印度洋,太平洋中部,西部大西洋和太平洋西南;而精灵聚集在非洲中部,日本海,西大西洋。实验观察到全球利率的3.23,0.50,每分钟0.39和0.01事件的精灵,精灵,晕,分别和巨大的飞机。仪器检测灵敏度和限制了调查区域考虑在内,全球精灵的出现率和纠正精灵可能是两倍和订单的级高,分别。观察也表明,相对的高频率峰值电流闪电(> 80 kA)是10倍的比在海洋吗土地。全球出现率、总电子以上内容在低电离层精灵热计算区域是升高超过5%.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号