气候变化领域集成服务门户(CCPortal): Constraining and Characterizing the Size of Atmospheric Rivers: A Perspective Independent From the Detection Algorithm

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DOI	10.1029/2020JD033746
	Constraining and Characterizing the Size of Atmospheric Rivers: A Perspective Independent From the Detection Algorithm
	Inda-Díaz H.A.; O'Brien T.A.; Zhou Y.; Collins W.D.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:16
英文摘要	Atmospheric rivers (AR) are large and narrow filaments of poleward horizontal water vapor transport. Because of its direct relationship with horizontal vapor transport, extreme precipitation, and overall AR impacts over land, the AR size is an important characteristic that needs to be better understood. Current AR detection and tracking algorithms have resulted in large uncertainty in estimating AR sizes, with areas varying over several orders of magnitude among different detection methods. We develop and implement five independent size estimation methods to characterize the size of ARs that make landfall over the west coast of North America in the 1980–2017 period and reduce the range of size estimation from ARTMIP. ARs that originate in the Northwest Pacific (WP) (100°−180°E) have larger sizes and are more zonally oriented than those from the Northeast Pacific (EP) (180°−240°E). ARs become smaller through their life cycle, mainly due to reductions in their width. They also become more meridionally oriented toward the end of their life cycle. Overall, the size estimation methods proposed in this study provide a range of AR areas (between 7 × 1011 and 1013 m2), that is, several orders of magnitude narrower than current methods estimation. This methodology can provide statistical constraints in size and geometry for the AR detection and tracking algorithms, and an objective insight for future studies about AR size changes under different climate scenarios. © 2021. Lawrence Berkeley National Laboratory.
英文关键词	area; atmospheric rivers; life cycle; size
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/237058
作者单位	Lawrence Berkeley National Laboratory, Berkeley, CA, United States; University of California Davis, Davis, CA, United States; Indiana University Bloomington, Bloomington, IN, United States; University of California Berkeley, Berkeley, CA, United States
推荐引用方式 GB/T 7714	Inda-Díaz H.A.,O'Brien T.A.,Zhou Y.,et al. Constraining and Characterizing the Size of Atmospheric Rivers: A Perspective Independent From the Detection Algorithm[J],2021,126(16).
APA	Inda-Díaz H.A.,O'Brien T.A.,Zhou Y.,&Collins W.D..(2021).Constraining and Characterizing the Size of Atmospheric Rivers: A Perspective Independent From the Detection Algorithm.Journal of Geophysical Research: Atmospheres,126(16).
MLA	Inda-Díaz H.A.,et al."Constraining and Characterizing the Size of Atmospheric Rivers: A Perspective Independent From the Detection Algorithm".Journal of Geophysical Research: Atmospheres 126.16(2021).