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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >CHARACTERISTICS OF KELVIN WAVES AND GRAVITY WAVES OBSERVED WITH RADIOSONDES OVER INDONESIA
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CHARACTERISTICS OF KELVIN WAVES AND GRAVITY WAVES OBSERVED WITH RADIOSONDES OVER INDONESIA

机译：在印度尼西亚上观察到的放射性同位素的开尔文波和重力波的特征

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摘要

Profiles of wind velocity and temperature at 0-35 km were observed by means of radiosondes in Nest Java, Indonesia, during November 1992 and April 1993 and used to study the behavior of various atmospheric waves in the equatorial atmosphere. An oscillation of zonal winds with a period of about 27 days was found in the troposphere, which was associated with variations in humidity and cloud top height. Kelvin waves showed phase progression beginning at cloud top height (13-16 km) and were particularly enhanced near the tropopause. The Kelvin waves strongly modulated the tropopause structure including the tropopause height, minimum temperature, and atmospheric stability. A hodograph analysis was applied to determine the propagation characteristics of inertial gravity waves. Height variation of the vertical group velocity suggests that the gravity waves were generated in the troposphere, while the horizontal phase velocity distribution suggests that they were interacting with the background mean zonal winds. These wave activities were enhanced when tall, convective clouds passed over the site, suggesting that cumulus convection seems to play a key role in generating these waves in the equatorial region. [References: 24]
机译：在1992年11月至1993年4月期间，通过印度尼西亚Nest Java的无线电探空仪观测了0-35 km处的风速和温度分布，并将其用于研究各种大气波在赤道大气中的行为。在对流层中发现纬向风的振荡周期约为27天，这与湿度和云顶高度的变化有关。开尔文波显示出从云顶高度（13-16 km）开始的相移，并且在对流层顶附近尤为增强。开尔文波强烈调节了对流层顶的结构，包括对流层顶的高度，最低温度和大气稳定性。应用全息分析仪确定惯性重力波的传播特性。垂直群速度的高度变化表明重力波是在对流层产生的，而水平相速度分布表明它们与背景平均纬向风相互作用。当高高的对流云层通过该地点时，这些波浪活动得到了增强，这表明积云的对流似乎在赤道区域产生这些波浪中起着关键作用。 [参考：24]

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