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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >THE ATMOSPHERIC COLUMN ABUNDANCE OF IO - IMPLICATIONS FOR STRATOSPHERIC OZONE
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THE ATMOSPHERIC COLUMN ABUNDANCE OF IO - IMPLICATIONS FOR STRATOSPHERIC OZONE

机译:IO的大气柱丰度-对平流层臭氧的影响。

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Absorption attributable to atmospheric IO is observed in high-resolution, high air mass solar spectra taken at the National Solar Observatory, Kitt Peak, Arizona, in March 1995. These observations, together with cross sections measured in the laboratory for the IO {A(2) Pi(3/2)<--X-2 Pi(3/2) (2,0)} rotationally resolved electronic transition, are consistent with a total stratospheric iodine mixing ratio of 0.2 (+0.3 -0.2) parts per trillion by volume. This result, combined with recent laboratory measurements of the rate of the reactions of IO with other halogen species, suggests that iodine chemistry is not responsible for the reductions observed in lower stratospheric ozone during the last several decades. [References: 49]
机译:1995年3月在亚利桑那州基特峰国家太阳能天文台拍摄的高分辨率,高空气质量太阳光谱中观察到了大气IO的吸收。这些观察结果以及在实验室中测量的IO {A( 2)Pi(3/2)<-X-2 Pi(3/2)(2,0)}旋转解析电子跃迁,与平流层碘的总混合比为0.2(+0.3 -0.2)数量达万亿。该结果与最近实验室对IO与其他卤素物种的反应速率的测量结果相结合,表明在过去的几十年中,碘化学反应并不导致平流层下部臭氧的减少。 [参考:49]

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