NSWP: Space Weather--An Examination of Short Term Forecasting of Equatorial Spread-F Using a Longitudinal Chain of Wind Measuring Fabry-Perot Interferometers

利用位于秘鲁Carmen Alto、巴西Cachoeira Paulista和南大西洋阿森松岛的三个法布里-珀罗涉仪的纵向链来确定中性风在触发和随后预报赤道扩散-F中的作用。使用成熟的法布里-珀罗涉仪仪器对OI(630 Nm)夜辉发射的多普勒剖面进行了同步测量，测量了F区电离层峰值下方的纬向风。秘鲁和巴西在研究的第一年完成并安装了仪器，阿森松岛在研究的第三年安装了仪器。这些测量确定了磁赤道附近夜间F区中性风的气候学。60度经线上的纬向风梯度与赤道扩展F的开始和扩展以及伴随的射电闪烁有关。中性风是国家空间天气计划预报赤道闪烁的重点工作中的一个关键参数。风的测量与专门用于预报工作的C/NOFS卫星的存在不谋而合。

The role of neutral winds in triggering and subsequently forecasting equatorial spread-F is determined using a longitudinal chain of three Fabry-Perot interferometers located at Carmen Alto, Peru, Cachoeira Paulista, Brazil, and Ascension Island in the South Atlantic. Simultaneous measurements of zonal winds just below the F-region ionospheric peak are made using well-established Fabry-Perot interferometer instrumentation sampling the Doppler profile of the OI (630nm) nightglow emission. Peru and Brazil instrumentation is completed and installed in the first research year, and Ascension Island is instrumented in research year three. The measurements determine the climatology of the nighttime F-region neutral winds near the magnetic equator. Zonal wind gradients in a sixty-degree swath of longitude are correlated to the onset and expansion of equatorial spread-F, and concomitant radio scintillations. Neutral winds are a key parameter to include in a focused effort by the National Space Weather Program to forecast equatorial scintillations. The wind measurements coincide with the presence of the C/NOFS satellite, dedicated to the forecast effort.