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| DOI | 10.1016/j.atmosenv.2021.118575 |
| La Niña-related tropospheric column ozone enhancement over East Asia | |
| Wie J.; Moon B.-K.; Yeh S.-W.; Park R.J.; Kim B.-G. | |
| 发表日期 | 2021 |
| ISSN | 1352-2310 |
| 卷号 | 261 |
| 英文摘要 | The El Niño-Southern Oscillation (ENSO), a dominant driver of interannual climate variations around the world, is characterized in the central-to-eastern tropical Pacific by anomalous sea-surface warming during the El Niño phase and cooling during the La Niña phase. Although ENSO strongly affects atmospheric circulation in East Asia, its effects on tropospheric ozone there have not been fully explored. Here we use satellite measurements of tropospheric column ozone and chemistry-climate model simulations to assess the effects of atmospheric circulations driven by ENSO on tropospheric column ozone levels in East Asia. We find that the observed ozone tends to increase in the East Asian troposphere 4 months after the La Niña peak, corresponding to anomalous northerly downward motions and suppressed convection. The circulation changes can be attributed to anomalous cyclonic flows in the western North Pacific, which links the La Niña and East Asian climate by modulating meridional transport of water vapor. These post-La Niña changes are also evident in the chemistry-climate model results, albeit with a slightly longer (5-month) lag. The model also reveals that La Niña-related ozone enhancement in East Asia is largely due to the intensified southward transport of ozone-rich air from higher latitudes. This suggests that ENSO should be considered to estimate the ozone concentration in East Asia, requiring much attention of ENSO properties in a changing climate. © 2021 The Authors |
| 关键词 | Chemistry-climate modelEast AsiaEl Niño-Southern Oscillation (ENSO)La NiñaTropospheric ozone |
| 语种 | 英语 |
| scopus关键词 | Atmospheric chemistry; Atmospheric pressure; Climate models; Climatology; Ozone; Surface waters; Atmospheric circulation; Chemistry-climate models; Climate variation; East Asia; El Nino southern oscillation; El nino-southern oscillation; Interannual; La nina; Tropospheric column ozones; Tropospheric ozone; Troposphere; atmospheric circulation; atmospheric convection; climate change; cooling; El Nino-Southern Oscillation; La Nina; ozone; spatiotemporal analysis; troposphere; Far East; Pacific Ocean; Pacific Ocean (North) |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/248330 |
| 作者单位 | Division of Science Education / Institute of Fusion Science, Jeonbuk National University, Jeonju, South Korea; Department of Marine Science and Convergent Technology, Hanyang University, ERICA, South Korea; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Department of Atmospheric Environmental Sciences, Gangneung-Wonju National University, Gangneung, South Korea |
| 推荐引用方式 GB/T 7714 | Wie J.,Moon B.-K.,Yeh S.-W.,et al. La Niña-related tropospheric column ozone enhancement over East Asia[J],2021,261. |
| APA | Wie J.,Moon B.-K.,Yeh S.-W.,Park R.J.,&Kim B.-G..(2021).La Niña-related tropospheric column ozone enhancement over East Asia.ATMOSPHERIC ENVIRONMENT,261. |
| MLA | Wie J.,et al."La Niña-related tropospheric column ozone enhancement over East Asia".ATMOSPHERIC ENVIRONMENT 261(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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