Modeling the transport of freshwater and dissolved organic carbon in the Neuse River Estuary, NC, USA following Hurricane Irene (2011)

Brown, Matthew M.; Mulligan, Ryan P.; Miller, Richard L.

doi:10.1016/j.ecss.2014.01.005

Cited by 34 publications

(21 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A Bayesian Monte Carlo (BMC) mixing model combining stable carbon isotope analysis, SUVA 254 values and S R values, revealed new insights into the effects of extreme events on this system, improving upon prior work in which OM sources from events such as hurricanes had not been clearly identified (Peierls et al, 2003;Osburn et al, 2012;Brown et al, 2014;Paerl et al, 2018). The BMC method provided estimates of the fractional source contributions from wetlands to the NRE following Hurricane Matthew in 2016, which we then compared to estimates made with a hydrologicalconnectivity flood model.…”

Section: Resultsmentioning

confidence: 94%

“…When compared to other storm events in the NRE the present DOC mass loading results were higher than estimated DOC loads from Hurricanes Fran (1996) and Irene (2011) although much lower than estimates from the combination of sequential Hurricanes Dennis, Floyd, and Irene in 1999 (7.4-8.4, 14 (TOC), and ca. 60 Gg C, respectively; Brown et al, 2014;Crosswell et al, 2014;Paerl et al, 1998;Paerl et al, 2018).…”

Section: Shunt: Rapid Delivery Of a Majority Of Doc Coastal Waters Inmentioning

confidence: 99%

See 1 more Smart Citation

Use of Geospatial, Hydrologic, and Geochemical Modeling to Determine the Influence of Wetland-Derived Organic Matter in Coastal Waters in Response to Extreme Weather Events

et al. 2020

View full text Add to dashboard Cite

Flooding from extreme weather events (EWE), such as hurricanes, exports large amounts of dissolved organic matter (DOM) to both estuaries and coastal waters globally. Hydrologic connectivity of wetlands to adjacent river channels during flood events can potentially have a major control on the DOM exported to coastal waters after EWEs. In this study, a geographic information system based flood model was used to: (1) determine the volume of flooded wetlands in a river corridor following Hurricane Matthew in 2016; (2) compute the resulting volume fluxes of DOM to the Neuse River Estuary-Pamlico Sound (NRE-PS), in eastern North Carolina and (3) use the flood model to quantify the wetland contribution to DOM export. The flood model-derived contributions were validated with a Bayesian Monte Carlo mixing model combining measurements of DOM quality: specific UV Absorbance at 254 nm (SUVA 254 ), spectral slope ratio (S R ), and stable isotope ratios of dissolved organic carbon (δ 13 C-DOC). Results indicated that (1) hydrologic connectivity of the freshwater riparian wetlands caused the wetlands to become the primary source of organic matter (OM) that was exported into the NRE-PS after Matthew and (2) this source lingered in these coastal waters in the months after the storm. Thus, in consideration of the pulse-shunt concept, EWE such as Hurricane Matthew cause pulses of DOM from wetlands, which were the primary source of the OM shunted from the terrestrial environment to the estuary and sound. Wetlands constituted ca. 48% of the annual loading of DOC into the NRE and 16% of DOC loading into the PS over a period of 30 days after Hurricane Matthew. Results were consistent with prior studies in this system, and other coastal ecosystems, that attributed a high reactivity of DOM as the underlying reason for large CO 2 releases following EWE. Adapting the pulse-shunt concept to estuaries requires the addition of a "processing" step to account for the DOM to CO 2 dynamics, thus a Frontiers in Marine Science | www.frontiersin.org 1 February 2020 | Volume 7 | Article 18 Rudolph et al. Wetland DOM Mobilized by Extreme Eventsnew pulse-shunt process is proposed to incorporate coastal waters. Our results suggest that with increasing frequency and intensity of EWE, strengthening of the lateral transfer of DOM from land to ocean will occur and has the potential to greatly impact coastal carbon cycling.

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Shunt: Rapid Delivery Of a Majority Of Doc Coastal Waters Inmentioning

confidence: 99%

Use of Geospatial, Hydrologic, and Geochemical Modeling to Determine the Influence of Wetland-Derived Organic Matter in Coastal Waters in Response to Extreme Weather Events

et al. 2020

View full text Add to dashboard Cite

show abstract

“…No measurements were made during Irene due to the clear risks of in-field observations, but recent modelling simulations indicate that high wind and current velocities mixed the vertically stratified water column and resuspended estuary sediments at the onset of the during-storm period (Brown et al 2014;R. Corbett pers.…”

Section: Methodsmentioning

confidence: 99%

Extensive CO₂ emissions from shallow coastal waters during passage of Hurricane Irene (August 2011) over the Mid‐Atlantic Coast of the U.S.A

Crosswell

Wetz

Hales

et al. 2014

Limnology & Oceanography

View full text Add to dashboard Cite

Shallow coastal waters serve an important role as long-term carbon (C) sinks because they capture terrestrial C and retain internally produced C in wetlands and sediments. We show that tropical cyclones (TCs) can lead to rapid CO 2 efflux from estuaries, driven by physical and biogeochemical perturbation of these coastal C reservoirs, and that the magnitude of TC-driven CO 2 emissions may offset C that accumulates over much longer timescales. In August 2011, Hurricane Irene passed over North Carolina's Neuse River Estuary-Pamlico Sound (NRE-PS), which is part of the second largest estuarine system in the U.S., the Albemarle-Pamlico Sound. Irene rapidly changed the NRE-PS system from a small CO 2 sink to a large CO 2 source. Irene-induced CO 2 efflux from the NRE alone was at least four times the annual riverine C input and seven times the annual atmospheric CO 2 uptake. The magnitude and duration of ecosystem disturbance from TCs vary with storm intensity and frequency but likely are qualitatively similar across many terrestrial and coastal systems. Consequently, altered TC activity under future climate scenarios may shift the balance between C accumulation in, and release from, coastal C reservoirs.

show abstract

“…Numerical simulation is an efficient method in oceanography, and it has been applied in numerous studies of carbon systems (Brown et al, ; Das et al, ; Sohma et al, ). However, most of them have been limited to the simulation of a single or a few critical variables in the carbon system and thus cannot thoroughly evaluate the entire carbon cycle.…”

Section: Introductionmentioning

confidence: 99%

“…To address this issue, we conduct a model study here and simulate the multiple carbon components and different interfaces in the PRE as an integrated system. Numerical simulation is an efficient method in oceanography, and it has been applied in numerous studies of carbon systems (Brown et al, 2014;Das et al, 2010;Sohma et al, 2018). However, most of them have been limited to the simulation of a single or a few critical variables in the carbon system and thus cannot thoroughly evaluate the entire carbon cycle.…”

Section: Introductionmentioning

confidence: 99%

Carbon System Simulation in the Pearl River Estuary, China: Mass Fluxes and Transformations

Liang

et al. 2020

JGR Biogeosciences

View full text Add to dashboard Cite

A carbon cycle model is built to describe the behavior of carbon materials in the Pearl River Estuary (PRE), China. The distributions and transformations of dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), and particulate organic carbon (POC) are simulated in the water column and sediment for the year 2006. The terrestrial carbon input is the dominant factor that determines the seasonal variation of carbon, while physical and biochemical processes contribute to the spatial‐temporal circulation of carbon. The simulation results reveal that the PRE acts as a net source for atmospheric CO2 throughout the year, and it buffers the export of DIC from the river and sediment to the adjacent system via the DIC consumption by primary production. As a consequence of biochemical processes, the PRE exports more organic carbon to the sediment and adjacent marine ecosystems than the amount that it receives from upstream river reaches. POC burial in sediment and refractory DOC export to the adjacent marine ecosystems are the main carbon fixation pathways in the PRE. The total amount of carbon fixation in PRE is estimated 6.92 × 1010 mol C year−1. Carbon fixation analysis shows that (1) 20.4% of the POC deposited into sediment is fixed through burial, while the remaining continues to participate in the circulation of carbon materials, and (2) the combined effects of river discharge and monsoon dominate the amount and direction of refractory DOC exports.

show abstract

Modeling the transport of freshwater and dissolved organic carbon in the Neuse River Estuary, NC, USA following Hurricane Irene (2011)

Cited by 34 publications

References 47 publications

Use of Geospatial, Hydrologic, and Geochemical Modeling to Determine the Influence of Wetland-Derived Organic Matter in Coastal Waters in Response to Extreme Weather Events

Use of Geospatial, Hydrologic, and Geochemical Modeling to Determine the Influence of Wetland-Derived Organic Matter in Coastal Waters in Response to Extreme Weather Events

Extensive CO₂ emissions from shallow coastal waters during passage of Hurricane Irene (August 2011) over the Mid‐Atlantic Coast of the U.S.A

Carbon System Simulation in the Pearl River Estuary, China: Mass Fluxes and Transformations

Contact Info

Product

Resources

About

Modeling the transport of freshwater and dissolved organic carbon in the Neuse River Estuary, NC, USA following Hurricane Irene (2011)

Cited by 34 publications

References 47 publications

Use of Geospatial, Hydrologic, and Geochemical Modeling to Determine the Influence of Wetland-Derived Organic Matter in Coastal Waters in Response to Extreme Weather Events

Use of Geospatial, Hydrologic, and Geochemical Modeling to Determine the Influence of Wetland-Derived Organic Matter in Coastal Waters in Response to Extreme Weather Events

Extensive CO2 emissions from shallow coastal waters during passage of Hurricane Irene (August 2011) over the Mid‐Atlantic Coast of the U.S.A

Carbon System Simulation in the Pearl River Estuary, China: Mass Fluxes and Transformations

Contact Info

Product

Resources

About

Extensive CO₂ emissions from shallow coastal waters during passage of Hurricane Irene (August 2011) over the Mid‐Atlantic Coast of the U.S.A