Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0223.1 |
Type Classification of Sudden Stratospheric Warming Based on Pre- and Postwarming Periods | |
Choi, Hyesun1,2; Kim, Baek-Min2,3; Choi, Wookap1 | |
2019-04-01 | |
发表期刊 | JOURNAL OF CLIMATE
![]() |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:8页码:2349-2367 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | In existing literature, sudden stratospheric warming (SSW) events have been typically defined as displacement or split types. Detailed reexamination of SSW evolution has revealed that an SSW event often alters its type before and after the central day of the warming event. On the basis of this observation, we objectively define three types of SSW using wave amplitude: displacement-displacement (DD) type, displacement-split (DS) type, and split-split (SS) type. The geopotential height (GPH) amplitude of zonal wavenumbers 1 and 2 averaged over 55 degrees-65 degrees N at 10 hPa was used as a criterion for the classification. If the amplitude of zonal wavenumber 1 is larger (smaller) than that of wavenumber 2 before and after the central day of SSW, the event is regarded as a DD (SS) type. If the amplitude of zonal wavenumber 1 is larger than that of wavenumber 2 before the central day but is smaller after that day, the event is regarded as a DS type. The above classification algorithm has been applied to both reanalysis data and model results. We observe that conventional split-type SSW events identified by previous studies can be categorized as either DS- or SS-type events, each type of which exhibits different evolution characteristics. In particular, they are distinctively different during the prewarming period. In the SS type, the characteristics of the conventional split type are more obvious, and the features that differ from those of the DD type are the most robust. The model results generally resemble the reanalysis data, particularly in the DD cases. |
英文关键词 | Atmosphere Arctic Waves atmospheric Stratosphere-troposphere coupling Stratosphere |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463599100003 |
WOS关键词 | POLAR VORTEX ; PLANETARY ; WEATHER |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/182148 |
专题 | 气候变化 |
作者单位 | 1.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea; 2.Korea Polar Res Inst, Incheon, South Korea; 3.Pukyong Natl Univ, Dept Environm Atmospher Sci, Pusan, South Korea |
推荐引用方式 GB/T 7714 | Choi, Hyesun,Kim, Baek-Min,Choi, Wookap. Type Classification of Sudden Stratospheric Warming Based on Pre- and Postwarming Periods[J]. JOURNAL OF CLIMATE,2019,32(8):2349-2367. |
APA | Choi, Hyesun,Kim, Baek-Min,&Choi, Wookap.(2019).Type Classification of Sudden Stratospheric Warming Based on Pre- and Postwarming Periods.JOURNAL OF CLIMATE,32(8),2349-2367. |
MLA | Choi, Hyesun,et al."Type Classification of Sudden Stratospheric Warming Based on Pre- and Postwarming Periods".JOURNAL OF CLIMATE 32.8(2019):2349-2367. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论