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| DOI | 10.1073/pnas.2319228121 |
| Why the lower stratosphere cools when the troposphere warms | |
| 发表日期 | 2024 |
| ISSN | 0027-8424 |
| EISSN | 1091-6490 |
| 起始页码 | 121 |
| 结束页码 | 11 |
| 卷号 | 121期号:11 |
| 英文摘要 | Observational data have long suggested that in the tropics, when the troposphere locally warms, the lower stratosphere locally cools. Here, the observed anti -correlation between tropospheric and lower stratospheric temperature is confirmed-the lower stratosphere cools by approximately 2 degrees per degree of warming in the mid -troposphere. This anti -correlation is explained through a recently proposed theory holding that there is a quasi -balanced response of the stratosphere to tropospheric heating [J. Lin, K. Emanuel, Tropospheric thermal forcing of the stratosphere through quasi -balanced dynamics. J. Atmos. Sci. (2024).]. The local -scale anti -correlation between tropospheric and lower stratospheric temperature also holds when considering climate change-where the troposphere has been anomalously warming relative to the zonal mean, the lower stratosphere has been anomalously cooling, and vice versa. This suggests that zonally asymmetries in tropospheric temperature trends will be reflected in that of the lower stratospheric temperature trends. The zonally asymmetric trends are also found to be comparable in magnitude to the mean temperature trends in the lower stratosphere, highlighting the importance of the pattern of warming. The results and proposed theory suggest that in addition to forcing via wave -dissipation, the lower stratosphere can also be subject to direct forcing by the troposphere, through quasi -steady, quasi -balanced dynamics. |
| 英文关键词 | stratosphere; -balanced dynamics; stratospheric dynamics |
| 语种 | 英语 |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| WOS记录号 | WOS:001206188500006 |
| 来源期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/295348 |
| 作者单位 | Columbia University; Cornell University; Massachusetts Institute of Technology (MIT) |
| 推荐引用方式 GB/T 7714 | . Why the lower stratosphere cools when the troposphere warms[J],2024,121(11). |
| APA | (2024).Why the lower stratosphere cools when the troposphere warms.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(11). |
| MLA | "Why the lower stratosphere cools when the troposphere warms".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.11(2024). |
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