Possible planetary wave coupling between the stratosphere and ionosphere by gravity wave modulation
Possible planetary wave coupling between the stratosphere and ionosphere by gravity wave modulation
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DOI：
10.1016/j.jastp.2011.07.008
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发表时间：
2012-02
影响因子：
1.9
通讯作者：
P. Hoffmann;C. Jacobi;C. Borries
中科院分区：
文献类型：
--
作者：
P. Hoffmann;C. Jacobi;C. Borries
利用2002 - 2008年中纬度大气资料，研究了平流层和电离层之间可能存在的行星波耦合现象。通过提取短于6 km的垂直波长的位能，从天基SABER温度廓线中反演GW信息。为了计算波浪活动的静止和移动代理，数据被安排到每天均匀间隔的三维基础上。从温度场和位能场得到了30 ~ 130 km范围内PW活动的直接和间接（调制）指数。从比较平流层PW，分析MetOffice再分析，和电离层PW型振荡（PWTO）从GPS-TEC数据，一个可能的耦合过程。结果表明，在太阳活动极大期（2002-2005年），由于GW的调制，平流层和电离层之间存在着潜在的联系。
A possible planetary wave (PW) coupling between the stratosphere and ionosphere by the modulation of gravity waves (GW) is studied using midlatitude atmospheric datasets from 2002 to 2008. Information of GW is retrieved from space-based SABER temperature profiles by extracting the potential energy for vertical wavelengths shorter than 6km. For calculating stationary and travelling proxies of wave activity the data are arranged to a daily evenly spaced 3-dimensional basis. From temperature and potential energy fields direct and indirect (modulation) indices of PW activity are obtained between 30 and 130km. From the comparison with stratospheric PW, analysed from MetOffice reanalyses, and ionospheric PW type oscillations (PWTO) from GPS-TEC data, a possible coupling process is derived. The results reveal a potential connection between the stratosphere and ionosphere by PW activity around solar maximum (2002–2005) caused by the modulation of GW at midlatitudes.