Ionospheric F Layer Scintillation Weakening as Observed by COSMIC/FORMOSAT-3 During the Major Sudden Stratospheric Warming in January 2013
Ionospheric F Layer Scintillation Weakening as Observed by COSMIC/FORMOSAT-3 During the Major Sudden Stratospheric Warming in January 2013
复制标题
2013 年 1 月平流层突然变暖期间 COSMICFORMOSAT 观测到的电离层 F 层闪烁减弱
DOI：
10.1029/2019ja027721
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发表时间：
2020
影响因子：
2.8
通讯作者：
Zhao Biqiang
中科院分区：
文献类型：
--
作者：
Yu Tao;Ye Hailun;Liu Huixin;Xia Chunliang;Zuo Xiaomin;Yan Xiangxiang;Yang Na;Sun Yangyi;Zhao Biqiang
北方冬季平流层突然增暖事件对电离层大扰动有重要影响。然而，SSW对电离层小尺度结构的影响，即电离层Flayer不规则性，通常缺乏了解。本文利用COSMIC/FORMOSAT-3卫星（一个用于气象、电离层和气候使命的星座观测系统）的观测数据，对2013年1月4日至2月5日SSW事件期间的赤道Flayer闪烁进行了详细的研究。在SSW期间，电离层闪烁的发生率明显降低了约30%。这种现象在美洲区（90°W-0°）和非洲区（0°-90 ° E）较为明显。另一个突出的特点是在2013年1月SSW事件期间，日落后的前2小时内，与赤道Flayer不规则性抑制相关的最大闪烁发生率延迟约0.5当地时间小时。
Sudden stratospheric warming (SSW) events in Northern Hemisphere winter atmosphere play a significant effect on large ionospheric disturbances. Nevertheless, the SSW effects on small‐scale structure in ionosphere, that is, the ionosphericFlayer irregularities, are generally lack of understanding. This work carefully studied the equatorialFlayer scintillation during the SSW event extending from 4 January to 5 February in 2013 by using the data of COSMIC/FORMOSAT‐3 (a Constellation Observing System for Meteorology, Ionosphere, and Climate mission). The occurrence rate of ionosphericFlayer scintillation was found to be apparently decreased by about 30% during the SSW period. This phenomenon was obviously seen in American sector (90°W–0°) and African sector (0°–90°E). Another prominent feature was the ~0.5 local time hour delay of maximum scintillation occurrence rate associated with the suppression of equatorialFlayer irregularities in the first 2 hr after the sunset during the SSW event in January 2013.