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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Evidence of nonlinear interaction between quasi 2day wave and quasi-stationary wave
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Evidence of nonlinear interaction between quasi 2day wave and quasi-stationary wave

机译：准非线性相互作用的证据2天波和似稳波

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The nonlinear interaction between the westward quasi 2 day wave (QTDW) with zonal wave number s = 3 (W3) and stationary planetary wave with s =1 (SPW1) is first investigated using both Thermosphere, Ionosphere, and Mesosphere Electric Dynamics (TIMED) satellite observations and the thermosphere-ionosphere-mesosphere electrodynamics general circulation model (TIME-GCM) simulations. A QTDW with westward s = 2 (W2) is identified in the mesosphere and lower thermosphere (MLT) region in TIMED/Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) temperature and TIMED/TIMED Doppler Imager (TIDI) wind observations during 2011/2012 austral summer period, which coincides with a strong SPW1 episode at high latitude of the northern winter hemisphere. The temperature perturbation of W2 QTDW reaches a maximum amplitude of ~8 K at ~30°S and ~88 km in the Southern Hemisphere, with a smaller amplitude in the Northern Hemisphere at similar latitude and minimum amplitude at the equator. The maximum meridional wind amplitude of the W2 QTDW is observed to be ~40m/s at 95 km in the equatorial region. The TIME-GCM is utilized to simulate the nonlinear interactions between W3 QTDW and SPW1 by specifying both W3 QTDW and SPW1 perturbations at the lower model boundary. The model results show a clear W2 QTDW signature in the MLT region, which agrees well with the TIMED/SABER temperature and TIMED/TIDI horizontal wind observations. We conclude that the W2 QTDW during the 2011/2012 austral summer period results from the nonlinear interaction between W3 QTDW and SPW1.
机译：西之间的非线性相互作用准2天波(QTDW)和纬向波数= 3 (W3)和静止的行星波和s = 1(SPW1)是第一个使用调查热大气层、电离层和中间层电气动力学(定时)卫星观测和thermosphere-ionosphere-mesosphere电动力学环流模式(TIME-GCM)模拟。2 (W2)标识在中间层和低热电离层(MLT)地区定时/听起来的大气中使用宽带发射辐射测量(剑)温度和时间/时间多普勒成像(TIDI)风观测期间2011/2012南国夏季,一致高纬度的强劲SPW1集北方冬季半球。扰动的W2 QTDW达到最大值振幅的~ 8 K ~ 30°S ~ 88公里南半球,和一个更小的振幅在相同的纬度和北半球最小振幅在赤道。经向风W2 QTDW的振幅观察~ 40 m / s在95公里的赤道地区。非线性W3 QTDW和SPW1之间的相互作用通过指定W3 QTDW和SPW1扰动在较低的模型边界。显示了W2 QTDW签名MLT地区同意与定时/剑温度和时间/ TIDI水平风观察。2011/2012的南国夏季结果W3 QTDW和之间的非线性相互作用

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