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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Stratosphere-troposphere exchange of ozone associated with the equatorial Kelvin wave as observed with ozonesondes and rawinsondes
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Stratosphere-troposphere exchange of ozone associated with the equatorial Kelvin wave as observed with ozonesondes and rawinsondes

机译：平流层-对流层中与赤道开尔文波有关的臭氧交换，如用臭氧探空仪和原始信噪比观测

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An intensive observation with ozonesondes and rawinsondes was conducted in Indonesia in May and June 1995 to investigate a phenomenon of ozone enhancement in the tropical upper troposphere. We obtained the characteristics of an enhancement that continued for about 20 days, concurring with a zonal wind oscillation associated with the equatorial Kelvin wave around the tropopause and the Madden-Julian oscillation (MJO) in the troposphere. The isoline of ozone mixing ratio of 40 nmol/mol moved by 5.0 km downward from 17.8 km to 12.8 km, while the tropopause height was 16.2-17.8 km throughout the period. Moreover, the maximum ozone concentration of 300 nmol/mol at the tropopause was concurrent with the maximum eastward wind phase of the Kelvin wave. The detailed mechanism of the ozone transport is interpreted as follows: The downward motion associated with the Kelvin wave and the MJO transported the stratospheric ozone into the troposphere, and the air mixing due to the Kelvin wave breaking at the tropopause also caused stratosphere-troposphere exchange. The upper limit of the net amount of ozone transported from the stratosphere was estimated to be 9.9 Dobson units with the zonal and meridional extents of the ozone-increased region of more than 6.6 x 10(6) m and 1.8 x 10(6) m, respectively, to imply the potential to affect the photochemistry around the tropical tropopause. [References: 29]
机译：1995年5月和6月，在印度尼西亚进行了一次臭氧探空仪和原始探空仪的密集观测，以研究热带对流层上空臭氧增强的现象。我们获得了持续约20天的增强特征，这与对流层顶周围的赤道开尔文波和对流层的Madden-Julian振荡（MJO）有关的纬向风振荡是一致的。臭氧混合比的等值线40 nmol / mol从17.8 km向下移动了5.0 km至12.8 km，而对流层顶高度在整个期间为16.2-17.8 km。此外，对流层顶的最大臭氧浓度为300 nmol / mol与开尔文波的最大东风相同时发生。臭氧传输的详细机理解释如下：与开尔文波和MJO相关的向下运动将平流层臭氧传输到对流层，由于在对流层顶开尔文波的破坏引起的空气混合也引起了平流层-对流层交换。从平流层输送的净臭氧量的上限估计为9.9 Dobson单位，臭氧增加区的纬向和经度范围分别大于6.6 x 10（6）m和1.8 x 10（6）m分别暗示有可能影响热带对流层顶周围的光化学。 [参考：29]

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