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 1. Synoptic-Scale Forcing

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DOI	10.1029/2020JD033413
	Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 1. Synoptic-Scale Forcing
	Siegert C.M.; Suriano Z.J.; 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	Synoptic typing is a method of classifying atmospheric conditions (i.e., pressure, temperature, wind direction) and can be used to relate those conditions to terrestrial processes. In this study, a daily synoptic calendar was developed for the northeastern United States to assess the atmospheric controls on variations in stream chemistry across three forested watersheds in Vermont, Rhode Island, and Maryland. Stream discharge along with dissolved organic carbon and nitrate concentrations were monitored in situ from March to November for 3 years (2014–2016) and then compared to the regional daily synoptic calendar to assess (a) which atmospheric patterns exported the greatest flux of water and solutes, (b) whether all three watersheds responded similarly to the regional atmospheric patterns, and (c) how these fluxes changed seasonally. Seven broad categories of atmospheric patterns were identified. In general, low pressure systems situated over the Great Lakes region produced the most rainfall which resulted in the highest peak streamflow by event along with daily fluxes of DOC and (Formula presented.) -N across the watersheds. In contrast, southwest flow regimes and Northwest Flow regimes occurred the most frequently (36% and 14% of study days, respectively) and resulted in the largest overall export (+50% of total) of water and solutes from the three watersheds. Regardless of watershed size or location, streamflow dynamics were similar when classified using synoptic typing. As such, valuable insight into the meteorological mechanisms behind temporal variation in carbon and nitrate stream export in forested watersheds can be gained by employing regional synoptic weather analyses. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	DOC; forested watershed; nitrate; 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/237143
作者单位	Department of Forestry, Forest and Wildlife Research Center, Mississippi State University, Mississippi State, MS, United States; Department of Geography and Geology, University of Nebraska Omaha, Omaha, NE, United States; Department of Geography and Spatial Sciences, University of Delaware, Newark, DE, United States; Department of Natural Resources Science, University of Rhode Island, San Ramon, CA, 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	Siegert C.M.,Suriano Z.J.,Leathers D.J.,et al. Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 1. Synoptic-Scale Forcing[J],2021,126(13).
APA	Siegert C.M..,Suriano Z.J..,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 1. Synoptic-Scale Forcing.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Siegert C.M.,et al."Effects of Atmospheric Circulation on Stream Chemistry in Forested Watersheds Across the Northeastern United States: Part 1. Synoptic-Scale Forcing".Journal of Geophysical Research: Atmospheres 126.13(2021).