Characteristics of equatorial gravity waves derived from mesospheric airglow imaging observations
Characteristics of equatorial gravity waves derived from mesospheric airglow imaging observations
复制标题
DOI：
10.5194/angeo-27-1625-2009
复制
发表时间：
2009-04
影响因子：
1.9
通讯作者：
Shin‐ichi Suzuki;K. Shiokawa;A. Liu;Y. Otsuka;T. Ogawa;Takuji Nakamura
中科院分区：
文献类型：
--
作者：
Shin‐ichi Suzuki;K. Shiokawa;A. Liu;Y. Otsuka;T. Ogawa;Takuji Nakamura
利用2002 - 2005年印度尼西亚Ko- totabang (100.3 E, 0.2 S) OH气辉成像观测资料，研究了赤道中层顶区域小尺度（<100 km）重力波的特征。采用了一种利用重力波二维交叉功率谱自动检测气辉图像中的重力波的方法。波的传播方向可能受到平流层平均风的纬向滤波控制，平流层平均风表现出准两年一次的振荡（QBO），对流层中存在许多波源。
We present the characteristics of small-scale (<100 km) gravity waves in the equatorial mesopause re- gion derived from OH airglow imaging observations at Ko- totabang (100.3 E, 0.2 S), Indonesia, from 2002 to 2005. We adopted a method that could automatically detect grav- ity waves in the airglow images using two-dimensional cross power spectra of gravity waves. The propagation directions of the waves were likely controlled by zonal filtering due to stratospheric mean winds that show a quasi-biennial oscilla- tion (QBO) and the presence of many wave sources in the troposphere.