The temperature structure of the Southern Hemisphere stratosphere August – October 1971
The temperature structure of the Southern Hemisphere stratosphere August – October 1971
复制标题
1971年8月至10月南半球平流层温度结构
DOI：
10.1002/qj.49710142707
复制
发表时间：
1975
影响因子：
8.9
通讯作者：
R. Harwood
中科院分区：
文献类型：
--
作者：
R. Harwood
本文利用雨云四号航天器上的选择斩波辐射计观测资料，描述了1971年8月至10月期间南半球平流层100 - 1 mb的温度场。
本文给出了由这些温度推算的1971年9月和10月的纬向和月平均风场，并讨论了波数为1，2，3的纬向温度波的行为。在水平方向上，波数1和2的最大振幅与最大西风带大致一致。波数2的振幅一般在20毫巴左右比以上或以下的振幅小。在30°S以北，两波的振幅都很小。
波数1在整个8月和9月几乎没有垂直相干性。然而，在10月，波的斜率与高度的变化要小得多，尽管在10月上旬缓慢向东移动，并在10月下旬向西移动。
2号波在8月15日至10月7日期间以每天约15.5 °经度的速度向东移动，但在其他时间则不那么均匀。在平流层顶水平波振幅的变化与对流层顶附近的变化相关联。1971年9月26日的波数2振幅极大值与平流层低层ZPE下降和平流层高层ZPE上升有关。平流层下部对涡动有效位能的贡献最大。
在平流层低层，纬向和涡动可用位能呈反比关系，一种形式的上升与另一种形式的福尔斯下降有关。在高平流层中，这种反比关系并不明显。
The temperature field in the Southern Hemisphere stratosphere from 100 to 1mb during August to October 1971 is described using observations from the Selective Chopper Radiometer on the Nimbus IV spacecraft.
Zonal and monthly mean wind fields for September and October 1971 deduced from these temperatures are presented and the behaviour of the zonal temperature waves with wavenumbers 1, 2 and 3 is discussed. The largest amplitudes of wavenumbers 1 and 2 in the horizontal coincide broadly with the maximum westerlies. The amplitudes of wavenumber 2 are generally smaller at around 20mb than above or below. The amplitudes of both waves are small north of 30°S.
Wavenumber 1 exhibits little vertical coherence throughout August and September. In October, however, the slope of the wave with height is much less variable, in spite of a slow eastward movement in early October and a westward movement in late October.
Wavenumber 2 travelled eastwards with a fairly uniform rate of approximately 15·5° longitude per day between 15 August and 7 October but less uniformly at other times. Changes in wave amplitude at strato-pause levels are associated with comparable changes near the tropopause. A maximum of wavenumber 2 amplitude on 26 September 1971 is associated with falling ZPE in the lower stratosphere and rising ZPE in the higher stratosphere. The dominant contribution to the eddy available potential energy is in the lower stratosphere.
In the low stratosphere there is an inverse relationship in zonal and eddy available potential energies, rises in one form being associated with falls in the other. This inverse relationship is not well marked in the high stratosphere.
论抛物型偏微分方程的动态奇异性（第一部分、第二部分）
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
E. Yanagida;菅徹;柳田英二;柳田英二
通讯作者：
柳田英二