Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-7169-2018 |
A comparison of the momentum budget in reanalysis datasets during sudden stratospheric warming events | |
Martineau, Patrick1; Son, Seok-Woo2; Taguchi, Masakazu3; Butler, Amy H.4 | |
2018-05-24 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:10页码:7169-7187 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; South Korea; USA |
英文摘要 | The agreement between reanalysis datasets, in terms of the zonal-mean momentum budget, is evaluated during sudden stratospheric warming (SSW) events. It is revealed that there is a good agreement among datasets in the lower stratosphere and troposphere concerning zonal-mean zonal wind, but less so in the upper stratosphere. Forcing terms of the momentum equation are also relatively similar in the lower atmosphere, but their uncertainties are typically larger than uncertainties of the zonal-wind tendency. Similar to zonal-wind tendency, the agreement among forcing terms is degraded in the upper stratosphere. Discrepancies among reanalyses increase during the onset of SSW events, a period characterized by unusually large fluxes of planetary-scale waves from the troposphere to the stratosphere, and decrease substantially after the onset. While the largest uncertainties in the resolved terms of the momentum budget are found in the Coriolis torque, momentum flux convergence also presents a non-negligible spread among the reanalyses. Such a spread is reduced in the latest reanalysis products, decreasing the uncertainty of the momentum budget. It is also found that the uncertainties in the Coriolis torque depend on the strength of SSW events: the SSW events that exhibit the most intense deceleration of zonal-mean zonal wind are subject to larger discrepancies among reanalyses. These uncertainties in stratospheric circulation, however, are not communicated to the troposphere. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432998200004 |
WOS关键词 | BREWER-DOBSON CIRCULATION ; SURFACE WEATHER ; PROJECT ; CLIMATE ; REGIMES ; SYSTEM |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/15121 |
专题 | 地球科学 |
作者单位 | 1.Univ Tokyo, Res Ctr Adv Sci & Technol, Tokyo, Japan; 2.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea; 3.Aichi Univ Educ, Dept Earth Sci, Kariya, Aichi, Japan; 4.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Martineau, Patrick,Son, Seok-Woo,Taguchi, Masakazu,et al. A comparison of the momentum budget in reanalysis datasets during sudden stratospheric warming events[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(10):7169-7187. |
APA | Martineau, Patrick,Son, Seok-Woo,Taguchi, Masakazu,&Butler, Amy H..(2018).A comparison of the momentum budget in reanalysis datasets during sudden stratospheric warming events.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(10),7169-7187. |
MLA | Martineau, Patrick,et al."A comparison of the momentum budget in reanalysis datasets during sudden stratospheric warming events".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.10(2018):7169-7187. |
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