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Atmospheric River Variability Over the Last Millennium Driven by Annular Modes

التفاصيل البيبلوغرافية
العنوان: Atmospheric River Variability Over the Last Millennium Driven by Annular Modes
المؤلفون: Seung H. Baek, J. Michael Battalio, Juan M. Lora
المصدر: AGU Advances, Vol 4, Iss 1, Pp n/a-n/a (2023)
بيانات النشر: Wiley, 2023.
سنة النشر: 2023
المجموعة: LCC:Geology
LCC:Geophysics. Cosmic physics
مصطلحات موضوعية: annular modes, atmospheric river, extratropical variability, extreme precipitation, last millennium, Geology, QE1-996.5, Geophysics. Cosmic physics, QC801-809
الوصف: Abstract Atmospheric rivers (ARs) are filamentary conduits of intense moisture transport crucial for water delivery to mid‐latitude coastal regions. How ARs have responded to extratropical climate variability remains poorly understood despite ARs being features of the extratropical atmosphere. Here, using “Last Millennium” simulations, we characterize the role of annular modes of extratropical variability on ARs and moisture transport. We find that positive (negative) phases of the annular modes intensify (weaken) and weaken (intensify) ARs over the subpolar and subtropical latitudes, respectively, with up to ∼20–25 mm/month associated changes in precipitation. Importantly, the annular modes comprise the primary mode of AR variability over the last ∼1,000 years. We also separately examine the annular modes' influence on storm track activity and find it distinct from that on ARs and moisture transport, despite the storm tracks being associated with ARs and overlapping with strong moisture transport. Lastly, our results provide a robust paleoclimate baseline from which to contextualize projected 21st century AR intensification.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2576-604X
Relation: https://doaj.org/toc/2576-604X
DOI: 10.1029/2022AV000834
URL الوصول: https://doaj.org/article/aacff0937522487d936b87528c0a1379
رقم الأكسشن: edsdoj.ff0937522487d936b87528c0a1379
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:2576604X
DOI:10.1029/2022AV000834