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| DOI | 10.1029/2020JD033749 |
| The Impact of Orography on the African Easterly Wave Stormtrack | |
| White J.D.; Aiyyer A.; Russell J.O.H. | |
| 发表日期 | 2021 |
| ISSN | 2169897X |
| 卷号 | 126期号:9 |
| 英文摘要 | We examined the sensitivity of African easterly waves (AEWs) to elevated terrain over North Africa using a numerical weather prediction model. We formed five ensembles of simulated AEW activity with orographic features independently reduced in four key regions. The ensemble members consisted of 10 consecutive AEW seasons simulated separately. From the ensembles, the southern AEW stormtrack was most sensitive to the reduction of the Ethiopian highlands. Energy budgets showed that diminished diabatic heating associated with precipitating convection was the likely driver of the weaker AEWs. Baroclinic overturning was the dominant pathway for this response. The northern AEW stormtrack was most sensitive to the reduction of the Hoggar and Tibesti mountains. In this case, a reduction in the vertical shear and diminished baroclinic energy conversions from the background state was associated with weaker AEWs. Through terrain reduction, our results provide a view of thermodynamic and dynamic feedback in AEWs that is complementary to what has been shown in past studies. © 2021. American Geophysical Union. All Rights Reserved. |
| 语种 | 英语 |
| 来源期刊 | Journal of Geophysical Research: Atmospheres
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/185233 |
| 作者单位 | North Carolina State University, Raleigh, NC, United States; University of Utah, Salt Lake City, UT, United States |
| 推荐引用方式 GB/T 7714 | White J.D.,Aiyyer A.,Russell J.O.H.. The Impact of Orography on the African Easterly Wave Stormtrack[J],2021,126(9). |
| APA | White J.D.,Aiyyer A.,&Russell J.O.H..(2021).The Impact of Orography on the African Easterly Wave Stormtrack.Journal of Geophysical Research: Atmospheres,126(9). |
| MLA | White J.D.,et al."The Impact of Orography on the African Easterly Wave Stormtrack".Journal of Geophysical Research: Atmospheres 126.9(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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