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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Long-Term Variability and Tendencies in Non-Migrating Diurnal Tide From WACCM6 Simulations During 1850–2014
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Long-Term Variability and Tendencies in Non-Migrating Diurnal Tide From WACCM6 Simulations During 1850–2014

机译：长期的可变性和倾向从WACCM6不迁徙的全日潮模拟期间1850 - 2014

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摘要

This study reports the long-term variability and tendencies in important non-migrating (DE3, DW2, DW3) and stationary (DS0) diurnal tides using a three-member ensemble of historical simulations of National Center for Atmospheric Research Whole Atmospheric Community Climate Model latest version 6 for 1850–2014 (165 years). The climatological features of the tide in temperature (T), zonal wind (U) and meridional wind (V) are presented for equinoxes/solstices and winter/summer. The response due to solar cycle (SC), quasi biennial oscillation at 10 hPa and 30 hPa, El Ni?o-Southern Oscillation (ENSO), ozone depleting substances (ODS), carbon dioxide (CO_2), and stratospheric sulfate aerosol (volcanic eruptions) to change in tidal amplitudes with respect to 1850–1860 are analyzed using multiple linear regression. The annual mean amplitudes increase in the upper mesosphere and lowermost thermosphere (0.0001–0.01 hPa) in the three components predominantly due to increasing CO_2 and the ODSs play secondary role. However, the increasing trends are not pronounced until 1950 in the case of DE3 and DW3 amplitudes. The contribution due to ENSO shows decreasing trend in DE3, DW2, and DW3 while it causes increasing trends for DS0. Furthermore, the seasonal and latitude-pressure variations of the tidal responses to the above seven indices are presented in T and V. All the responses, except for the solar signal, are significant mostly in the upper mesosphere and lowermost thermosphere typically at equatorial/low latitudes.
机译：这项研究报告的长期变化和倾向在重要不迁徙(DE3 DW2,DW3)和静止(DS0)周日潮汐使用历史模拟的三人合奏国家大气研究中心的整体大气社区最新气候模型版本6 1850 - 2014年(165年)。潮的气候特征温度(T)、纬向风(U)和经向风(V)提出的分点和至点之时和冬季/夏季。周期(SC)、准两年振荡hPa 10点和30 hPa, El倪?消耗臭氧层物质(ODS),二氧化碳硫酸(二氧化碳)和平流层气溶胶(火山喷发)潮汐的变化振幅对1850 - 1860年进行了分析使用多元线性回归。上面的中间层和振幅增加最低热电离层(0.0001 - -0.01 hPa)三个组件主要是由于增加二氧化碳和ods扮演次要的角色。之前的上升趋势不明显1950年DE3和DW3振幅。贡献由于ENSO显示下降趋势在DE3 DW2, DW3虽然导致增加DS0的趋势。latitude-pressure潮汐的变化对以上七个指标的反应介绍了T和v反应,除了太阳能信号,主要是在非常重要上面的中间层和最低热大气层通常在赤道和低纬度地区。

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