气候变化领域集成服务门户(CCPortal): Seasonal Variability of the CO2 System in a Large Coastal Plain Estuary

CCPortal

DOI	10.1029/2019JC015609
	Seasonal Variability of the CO2 System in a Large Coastal Plain Estuary
	Friedman J.R.; Shadwick E.H.; Friedrichs M.A.M.; Najjar R.G.; De Meo O.A.; Da F.; Smith J.L.
发表日期	2020
ISSN	21699275
卷号	125 期号:1
英文摘要	The Chesapeake Bay, a large coastal plain estuary, has been studied extensively in terms of its water quality, and yet, comparatively less is known about its carbonate system. Here we present discrete observations of dissolved inorganic carbon (DIC) and total alkalinity from four seasonal cruises in 2016–2017. These new observations are used to characterize the regional CO2 system and to construct a DIC budget of the mainstem. In all seasons, elevated DIC concentrations were observed at the mouth of the bay associated with inflowing Atlantic Ocean waters, while minimum concentrations of DIC were associated with fresher waters at the head of the bay. Significant spatial variability of the partial pressure of CO2 was observed throughout the mainstem, with net uptake of atmospheric CO2 during each season in the upper mainstem and weak seasonal outgassing of CO2 near the outflow to the Atlantic Ocean. During the time frame of this study, the Chesapeake Bay mainstem was (1) net autotrophic in the mixed layer (net community production of 0.31-mol C m−2·year−1) and net heterotrophic throughout the water column (net community production of −0.48-mol C m−2·year−1), (2) a sink of 0.38-mol C m−2·year−1 for atmospheric CO2, and (3) significantly seasonally and spatially variable with respect to biologically driven changes in DIC. © 2020. The Authors.
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187014
作者单位	Virginia Institute of Marine Science, William & Mary, Gloucester Point, VA, United States; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University ParkPA, United States
推荐引用方式 GB/T 7714	Friedman J.R.,Shadwick E.H.,Friedrichs M.A.M.,et al. Seasonal Variability of the CO2 System in a Large Coastal Plain Estuary[J],2020,125(1).
APA	Friedman J.R..,Shadwick E.H..,Friedrichs M.A.M..,Najjar R.G..,De Meo O.A..,...&Smith J.L..(2020).Seasonal Variability of the CO2 System in a Large Coastal Plain Estuary.Journal of Geophysical Research: Oceans,125(1).
MLA	Friedman J.R.,et al."Seasonal Variability of the CO2 System in a Large Coastal Plain Estuary".Journal of Geophysical Research: Oceans 125.1(2020).