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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Vertical Coupling From the Lower Atmosphere to the Ionosphere: Observations Inferred From Indian MST Radar, GPS Radiosonde, Ionosonde, Magnetometer, OLR (NOAA), and SABER/TIMED Instrument Over Gadanki
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Vertical Coupling From the Lower Atmosphere to the Ionosphere: Observations Inferred From Indian MST Radar, GPS Radiosonde, Ionosonde, Magnetometer, OLR (NOAA), and SABER/TIMED Instrument Over Gadanki

机译：从低层大气垂直耦合从印度MST电离层:观察推断雷达、GPS无线电探空仪、Ionosonde、磁强计OLR (NOAA)和军刀/计时仪器Gadanki

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摘要

Simultaneous wind observations from Mesosphere Stratosphere Troposphere (MST) radar collectively with Global Positioning System (GPS) radiosonde over Gadanki, covering altitude range of 3.6-20 km (January-December 2009; 365 days), divulge the propagation of lower atmospheric waves up to the ionosphere. It is combined with temperature data (20-110 km) observed from Sounding of the Atmosphere using the Broadband Emission Radiometry (SABER) instrument onboard Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite, ionosonde observations, and daily Outgoing Longwave Radiation (OLR) data acquired from the National Ocean and Atmospheric Administration (NOAA; centered around Gadanki [13.5°N, 79.2°E]) for the same time period. Long-period oscillations with periodicities of ~64, ~32, and ~21 days are witnessed along with the well-known oscillations of ~16, ~6.4, and ~5.3 days. Most of the long-period oscillations are dominantly perceived during the summer months (April-June 2009), which can even exist up to September. These long-period oscillations are found to propagate from lower tropospheric heights up to ionospheric heights with large vertical wavelengths (~300-400 km, in some cases) near to transition zones of atmospheric layers (e.g., tropopause, stratopause, and mesopause). Signatures of vertical coupling of atmosphere through large vertical wavelengths (indicating possible intraseasonal connections) is clearly observed in the equatorial electrojet current and the peak plasma frequencies of ionospheric layers (E and F regions). Noticeable reduction of the wave oscillations in spatial scale with upsurge in spatial damping is evidently visible, in the tropical stratosphere and mesosphere, which can be attributed to stratospheric ozone.
机译：同时从中间层风观测集体平流层对流层(MST)雷达与全球定位系统(GPS)无线电探空仪在Gadanki,覆盖海拔3.6 -20公里(January-December 2009;降低大气波传播的电离层。(20 - 110公里)观察到的声音使用宽带发射气氛辐射测量仪器(剑)热大气层电离层中间层能量动力学(定时)卫星,ionosonde观察,和日常传出长波辐射(OLR)从国家获得的数据海洋和大气管理局(NOAA);围绕Gadanki[13.5°N, 79.2°E])的同一时期。周期的研究64年~ ~ ~ 32岁和21天见证了著名的振荡~ 16日~ 6.4 ~ 5.3天。长周期振荡是居多的感知夏季(4 - 2009)9月甚至可以存在。发现振荡传播从较低对流层高度电离层的高度与大型垂直波长(~ 300 - 400公里某些情况下)过渡区附近大气层(例如,对流层顶,平流层顶、中气层顶)。通过大型垂直耦合大气垂直波长(指示动力学连接)明显观察到赤道电喷流电流和峰值等离子体频率的电离层层(E和F地区)。振动在空间规模激增空间阻尼显然可见,热带平流层和中间层,它可以是由于平流层臭氧。

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