Diagnosis of Annual Synchronization of the Quasi-Biennial Oscillation: Results from JRA-25/JCDAS Reanalysis and MRI Chemistry-Climate Model Data
Diagnosis of Annual Synchronization of the Quasi-Biennial Oscillation: Results from JRA-25/JCDAS Reanalysis and MRI Chemistry-Climate Model Data
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准两年期振荡的年度同步诊断：JRA-25/JCDAS 再分析和 MRI 化学-气候模型数据的结果
DOI：
10.2151/jmsj.2013-301
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发表时间：
2013
影响因子：
3.1
通讯作者：
K. Shibata
中科院分区：
文献类型：
--
作者：
M. Taguchi;K. Shibata
利用日本25年再分析/日本气象厅气候资料同化系统（JRA 25/JCDAS）和日本气象研究所化学气候模式（CCM）的资料，研究了赤道平流层准两年振荡（QBO）的年同步趋势。年同步是指QBO的相变往往发生在特定的季节。JRA-25/JCDAS再分析资料也表现出类似的年同步特征。目前的诊断的基础上的变换欧拉平均纬向动量方程表明，纬向风加速度的年度同步在很大程度上是无法解释的明确计算的条款，与解决波驱动和强烈的取消效应垂直平流的贡献很小。虽然CCM模拟了QBO的一般特征以及赤道上升流的年变化，但没有模拟出观测到的年同步。年同步的情况下，有关的参数化重力波强迫的几乎季节性均匀分布。综合这些结果推测，在实际条件下，对流波和重力波的季节变化对诱导QBO的年同步趋势起着关键作用。
Data from the Japanese 25-yr reanalysis/Japan Meteorological Agency Climate Data Assimilation System (JRA25/JCDAS) and the chemistry climate model (CCM) of the Meteorological Research Institute (MRI) were used in this study to investigate the annual synchronization tendency of the quasi-biennial oscillation (QBO) in the equatorial stratosphere. The annual synchronization refers to phase transitions of the QBO that tend to occur for specific seasons. The JRA-25/JCDAS reanalysis data exhibit similar features of the annual synchronization. The present diagnosis based on the transformed-Eulerian mean zonal momentum equation shows that zonal wind accelerations for the annual synchronization are largely unexplained by explicitly calculated terms, with a small contribution from resolved wave driving and a strong canceling effect from vertical advection. The CCM does not simulate the annual synchronization as observed, although it does simulate general features of the QBO, as well as annual variation in equatorial upwelling with some differences. The absence of the annual synchronization is related to an almost seasonally uniform distribution of parameterized gravity wave forcing. It is speculated from these results collectively that seasonal variation of convection and gravity waves plays a key role in inducing the annual synchronization tendency of the QBO under actual conditions.
2001-2006年GPS无线电掩星温度数据揭示的热带地区大气波能的水平分布
DOI：
--
发表时间：
2009
期刊：
Earth Planets Space (Accepted)
影响因子：
--
作者：
Tsuda;T.;M. V. Ratnam;S. P. Alexander;T. Kozu;Y. Takayabu
通讯作者：
Y. Takayabu
平流层准两年期振荡与厄尔尼诺-南方涛动的联系
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
K.Sawai;Y.Takano;M.Izquierdo;S.Filippone;N.Martin;Z.Slanina;N.Mizorogi;M.Waelchli;T.Tsuchiya;T.Akasaka;S.Nagase;Horikawa H.;Taguchi. M.
通讯作者：
Taguchi. M.
Deushi，已解决的波强迫和未解决的重力波强迫之间的划分对准两年一次振荡的影响，如化学-气候耦合模型所揭示的
DOI：
--
发表时间：
2005
期刊：
Geophysical Research Letters 32, L12820, doi : 10.1029/2005GL022885
影响因子：
--
作者：
Shibata;K.;M.
通讯作者：
M.