دورية أكاديمية
An Explanation for the Metric Dependence of the Midlatitude Jet‐Waviness Change in Response to Polar Warming
| العنوان: | An Explanation for the Metric Dependence of the Midlatitude Jet‐Waviness Change in Response to Polar Warming |
|---|---|
| المؤلفون: | Ruth Geen, Stephen I. Thomson, James A. Screen, Russell Blackport, Neil T. Lewis, Regan Mudhar, William J. M. Seviour, Geoffrey K. Vallis |
| المصدر: | Geophysical Research Letters, Vol 50, Iss 21, Pp n/a-n/a (2023) |
| بيانات النشر: | Wiley, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Geophysics. Cosmic physics |
| مصطلحات موضوعية: | Geophysics. Cosmic physics, QC801-809 |
| الوصف: | Abstract Arctic amplification has been proposed to promote temperature extremes by slowing the midlatitude jet and increasing the amplitude of its meanders. Observational and modeling studies have used a variety of metrics to quantify jet waviness. These studies show conflicting changes in jet waviness depending on the metric used and period examined. Here, we evaluate common metrics for dry idealized model simulations in which we apply polar warming of varying depth and meridional extent. In all simulations, polar warming increases the spatial extent of jet meanders, but reduces the magnitudes of ridges and troughs within the wave. As a result, geometric and anomaly‐amplitude measures of jet waviness can yield opposing responses. This contrast between metrics is particularly evident when warming extends into the midlatitudes. In all simulations, midlatitude temperature anomalies weaken as the poles warm, suggesting that a wavier jet need not imply stronger temperature extremes. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1944-8007 0094-8276 |
| Relation: | https://doaj.org/toc/0094-8276; https://doaj.org/toc/1944-8007 |
| DOI: | 10.1029/2023GL105132 |
| URL الوصول: | https://doaj.org/article/a64046cb66d5462aa9d2396f25f93909 |
| رقم الأكسشن: | edsdoj.64046cb66d5462aa9d2396f25f93909 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19448007 00948276 |
|---|---|
| DOI: | 10.1029/2023GL105132 |