气候变化领域集成服务门户(CCPortal): Influence of African Atmospheric Rivers on Precipitation and Snowmelt in the Near East's Highlands

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DOI	10.1029/2020JD033646
	Influence of African Atmospheric Rivers on Precipitation and Snowmelt in the Near East's Highlands
	Bozkurt D.; Sen O.L.; Ezber Y.; Guan B.; Viale M.; Caglar F.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:4
英文摘要	Atmospheric rivers (ARs) traveling thousands of kilometers over arid North Africa could interact with the highlands of the Near East (NE), and thus affect the region's hydrometeorology and water resources. Here, we use a state-of-the-art AR tracking database, and reanalysis and observational datasets to investigate the climatology (1979–2017) and influences of these ARs in snowmelt season (March–April). The Red Sea and northeast Africa are found to be the major source regions of these ARs, which are typically associated with the eastern Mediterranean trough positioned over the Balkan Peninsula and a blocking anticyclone over the NE-Caspian region, triggering southwesterly air flow toward the NE's highlands. Approximately 8% of the ARs are relatively strong (integrated water vapor transport >∼275 kg m−1 s−1). AR days exhibit enhanced precipitation over the crescent-shaped orography of the NE region. Mean AR days indicate wetter (up to + 2 mm day−1) and warmer (up to + 1.5°C) conditions than all-day climatology. On AR days, while snowpack tends to decrease (up to 30%) in the Zagros Mountains, it can show decreases or increases in the Taurus Mountains depending largely on elevation. A further analysis with the observations and reanalysis indicates that extreme ARs coinciding with large scale sensible heat transport can significantly increase the daily discharges. These results suggest that ARs can have notable impacts on the hydrometeorology and water resources of the region, particularly of lowland Mesopotamia, a region that is famous with great floods in the ancient narratives. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Euphrates-Tigris Basin; extreme precipitation; hydrometeorology; moisture transport; runoff; snow
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/237174
作者单位	Department of Meteorology, University of Valparaíso, Valparaíso, Chile; Center for Climate and Resilience Research (CR)2, Santiago, Chile; Eurasia Institute of Earth Sciences, Istanbul Technical University, Istanbul, Turkey; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina
推荐引用方式 GB/T 7714	Bozkurt D.,Sen O.L.,Ezber Y.,et al. Influence of African Atmospheric Rivers on Precipitation and Snowmelt in the Near East's Highlands[J],2021,126(4).
APA	Bozkurt D.,Sen O.L.,Ezber Y.,Guan B.,Viale M.,&Caglar F..(2021).Influence of African Atmospheric Rivers on Precipitation and Snowmelt in the Near East's Highlands.Journal of Geophysical Research: Atmospheres,126(4).
MLA	Bozkurt D.,et al."Influence of African Atmospheric Rivers on Precipitation and Snowmelt in the Near East's Highlands".Journal of Geophysical Research: Atmospheres 126.4(2021).