Atmospheric Disturbance Characteristics in the Lower-middle Stratosphere Inferred from Observations by the Round-Trip Intelligent Sounding System (RTISS) in China

Identification of stratospheric disturbance information in China based on the round-trip intelligent sounding system

“…This method has previously been used for aircraft observation data (Cho and Lindborg, 2001). At the tail of the S 3 (r) (turbulence subrange), the r slope represents the occurrence of turbulence, whereas at larger scales (GW subrange) of S 3 (r), the r 2 and r 3 slopes represent the unstable and stable GWs, respectively (Lu and Koch, 2008;He et al, 2022). The related calculation is as follows (Cho and Lindborg, 2001;Lindborg, 1999):…”

“…A3). As S q (r) = |δ u L (r)| q , when the curve of S q (r) at a certain separation distance r has an obvious inflection point, it means that there is a sudden increase or decrease in some velocity increment in the set of all velocity increments at this scale (He et al, 2022).…”

“…Data used in the paper are from an experimental project using the round-trip intelligent sounding system (RTISS) and cover sites in China, including the following: Yichang (YC), Wuhan (WH), Anqing (AQ), Changsha (CS), Nanchang (NC), and Ganzhou (GZ). The RTISS can realize three-stage detection, including the rising, flat-floating, and falling stages, and has become an important source of atmospheric disturbance information for analysis in the horizontal direction of the stratosphere (Cao et al, 2019;He et al, 2022). The release time span is from 1 June to 10 July (summer) and from 13 October to 18 November (autumn) in 2018.…”

Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere

“…Satellite observation is superior to ground observation because the area measured by a satellite is often larger than can be observed by ground instruments, and some satellite observations also provide better temporal and vertical resolution than ground-based systems (Jin S and Feng GP, 2011;Jin S et al, 2013). A large number of satellite-mounted instruments have been used to observe temporal and spatial distribution characteristics of GWs (Wu DL and Waters, 2013;He Y et al, 2022b;Ge W et al, 2023). The distribution characteristics of global GW activity have been studied, and the impact of background wind field on GWs has been discussed (Tsuda et al, 2016;Jia MJ et al, 2018;Wu JF et al, 2018;Ge W et al, 2019;Yi W et al, 2019;He Y et al, 2020d;Ern et al, 2022).…”

Characteristic Analysis of Relationship Between Precipitation and Turbulence in the Troposphere and Lower Stratosphere Over Tropical Western Pacific

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Turbulence in the free atmosphere plays a very important role in many aspects of research and life, which can cause the originally stable laminar atmosphere to produce short-term and high-frequency irregular fluctuations (Zhao et al, 2019), which is one of the main drivers of the exchange and transmission of energy and rare gases at different altitudes (Dutta et al, 2009;Fritts et al, 2012;He et al, 2022). In addition, clear air turbulence is the main cause of aircraft bumpiness, which has a huge impact on the aviation sector (Sharman et al, 2006(Sharman et al, , 2012Storer et al, 2019).

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