文章基本信息

标题：Resolving a long‐standing model‐observation discrepancy on ozone solar cycle response
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作者：King‐Fai Li ; Qiong Zhang ; Ka‐Kit Tung 等
期刊名称：Earth and Space Science
电子版ISSN：2333-5084
出版年度：2016
卷号：3
期号：10
页码：431-440
DOI：10.1002/2016EA000199
语种：English
出版社：John Wiley & Sons, Ltd.
摘要：To have the capability for long‐term prediction of stratospheric ozone (O3), chemistry‐climate models have often been tested against observations on decadal timescales. A model‐observation discrepancy in the tropical O3 response to the 11 year solar cycle, first noted in 1993, persists for more than 20 years: While standard photochemical models predict a single‐peak response in the stratosphere, satellite observations show an unexpected double‐peak structure. Such discrepancy has led to the question of whether the current standard O3 photochemistry is deficient. Various studies have explored uncertainties in photochemistry and dynamics but there has not been compelling evidence of model biases. Here we suggest that decadal satellite orbital drifts relative to the diurnal cycle could be the primary cause of the discrepancy. We show that the double‐peak structure can be reproduced by adding the A.M./P.M. diurnal difference to the single‐peak response predicted by the standard photochemistry. Thus we argue that the standard photochemistry is consistent with the observed solar cycle modulation in stratospheric O3.
关键词：orbital drifts;diurnal asymmetry;artificial decadal variability