Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094078 |
Influence of low-frequency PNA variability on MJO teleconnections to North American atmospheric river activity | |
Kinya Toride; Gregory J. Hakim | |
2021-06-19 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The Madden-Julian oscillation (MJO) modulates atmospheric river (AR) activity along the West Coast of North America. The forecast skill of ARs based solely on the MJO phase is limited, motivating the identification of other predictive factors. Here we show that low-frequency variability of the Pacific/North American (PNA) pattern is mostly independent of the MJO and the monthly PNA pattern influences the MJO-AR relationship much more robustly than other large-scale patterns such as the El Niño Southern Oscillation, and the quasi-biennial oscillation. During PNA+ conditions, when the Pacific jet exit region is located further east than average, baroclinic wave packets extend downstream toward North America. The clear contrast in wave packets’ zonal scale results in partitioning active and inactive AR phases. The PNA influence is most significant over the Pacific Northwest region of North America, where AR landfall is most frequent, with implied forecasting skill beyond 20 days. |
领域 | 气候变化 |
URL | 查看原文 |
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/330699 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Kinya Toride,Gregory J. Hakim. Influence of low-frequency PNA variability on MJO teleconnections to North American atmospheric river activity[J]. Geophysical Research Letters,2021. |
APA | Kinya Toride,&Gregory J. Hakim.(2021).Influence of low-frequency PNA variability on MJO teleconnections to North American atmospheric river activity.Geophysical Research Letters. |
MLA | Kinya Toride,et al."Influence of low-frequency PNA variability on MJO teleconnections to North American atmospheric river activity".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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