气候变化领域集成服务门户(CCPortal): Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 2. Interannual Weather Type Variability

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DOI	10.1029/2021JD034546
	Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 2. Interannual Weather Type Variability
	Suriano Z.J.; Siegert C.M.; Leathers D.J.; Gold A.J.; Addy K.; Schroth A.W.; Seybold E.; Inamdar S.; Levia D.F.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:13
英文摘要	Using synoptic classification techniques, synoptic-scale weather types associated with large exports of dissolved organic carbon and nitrate-nitrogen in three forested watersheds in the northeastern United States are analyzed. In contrast to Siegert et al. (2021, https://doi.org/10.1029/2020jd033413; Part 1), which details the general synoptic conditions associated with stream chemistry variations, this study focuses on the long-term frequency, trends, and global-scale forcing mechanisms of individual, chemistry-relevant, synoptic types. Nine individual types are identified as the most important to stream chemistry exports in northeastern watersheds during a 2.5-year period of high-frequency stream chemistry observation (2014–2016). Streamflow chemistry was the most influenced by Northwest Flow synoptic weather types in Vermont, cold front passages associated with Weak Westerly Flow types in Rhode Island, and Southwest Flow (SWF) types in Maryland. Each type provides unique atmospheric conditions that result in variations in precipitation, and thus chemical signals. From 1948 to 2017, the Arctic and North Atlantic Oscillations greatly influenced the interannual frequency of the analyzed synoptic types. When the indices were positively phased, SWF types were more frequent, while Northwest Flow and Weak Westerly Flow types were less frequent. Long-term trends in synoptic type frequency are, inpart, due to documented changes in these teleconnection indices toward more positively phased configurations. As the climate continues to change into the 21st century, such associations may continue to drive large changes in synoptic type frequency, and thus watershed hydrology and biogeochemistry in the Northeast region. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	dissolved organic carbon; nitrate; North Atlantic Oscillation; precipitation; synoptic classification
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/237145
作者单位	Department of Geography/Geology, University of Nebraska Omaha, Omaha, NE, United States; Department of Forestry, Forest and Wildlife Research Center, Mississippi State University, Starkville, MS, United States; Department of Geography and Spatial Sciences, University of Delaware, Newark, DE, United States; Department of Natural Resources Science, University of Rhode Island, South Kingstown, RI, United States; Department of Geology, University of Vermont, Burlington, VT, United States; Department of Plant and Soil Sciences, University of Delaware, Newark, DE, United States
推荐引用方式 GB/T 7714	Suriano Z.J.,Siegert C.M.,Leathers D.J.,et al. Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 2. Interannual Weather Type Variability[J],2021,126(13).
APA	Suriano Z.J..,Siegert C.M..,Leathers D.J..,Gold A.J..,Addy K..,...&Levia D.F..(2021).Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 2. Interannual Weather Type Variability.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Suriano Z.J.,et al."Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 2. Interannual Weather Type Variability".Journal of Geophysical Research: Atmospheres 126.13(2021).