Samuel E. Muñoz
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View article: Contrasting Size Dependence of Photochemical Lifetimes of Polypropylene and Expanded Polystyrene Microplastics in Surface Waters
Contrasting Size Dependence of Photochemical Lifetimes of Polypropylene and Expanded Polystyrene Microplastics in Surface Waters Open
Microplastics are found floating on natural waters. Sunlight-driven photochemistry can dissolve buoyant microplastics, producing dissolved organic carbon (DOC). We hypothesized that plastic dissolution would increase linearly with increasi…
View article: Connecting Large‐Scale Atmospheric and Land Surface Patterns to New England Riverine Peak Flow Events
Connecting Large‐Scale Atmospheric and Land Surface Patterns to New England Riverine Peak Flow Events Open
Riverine flooding in the New England region of the United States of America is devastating, arises from multiple processes during any season, and lacks ties to common climate indices. Here the connection between large‐scale atmospheric pat…
View article: Evaluation of hydroclimatic biases in the Community Earth System Model (CESM1) within the Mississippi River basin
Evaluation of hydroclimatic biases in the Community Earth System Model (CESM1) within the Mississippi River basin Open
The Mississippi River is a critical waterway in the United States, and hydrologic variability along its course represents a perennial consideration for trade, agriculture, industry, ecosystems, the economy, and communities. Simulations of …
View article: Century‐scale resilience of stored seagrass blue carbon
Century‐scale resilience of stored seagrass blue carbon Open
Blue carbon sequestration in coastal ecosystems is only relevant to climate change mitigation and carbon offset crediting if the carbon is taken out of circulation for at least a century. Here, we examined sediment cores, up to 2.2 m deep,…
View article: Drying of the Panama Canal in a Warming Climate
Drying of the Panama Canal in a Warming Climate Open
The Panama Canal is an artery of global trade, connecting the Atlantic and Pacific Oceans and relying on water from Gatún Lake to operate its lock system. During droughts, falling lake levels force the Autoridad del Canal de Panamá to rest…
View article: A 15,800 year record of productivity, carbon accumulation and environmental change at Eight Mile Lake and its catchment, central Alaska
A 15,800 year record of productivity, carbon accumulation and environmental change at Eight Mile Lake and its catchment, central Alaska Open
Despite their efficient burial of organic carbon (OC), the role of high-latitude lakes in storing and processing OC under changing climates is poorly understood. We investigate a 15,800 year sedimentary record from Eight Mile Lake, central…
View article: Multiple paleofire proxy metrics from tropical lake sediment and soil in the Greater Serengeti Ecosystem
Multiple paleofire proxy metrics from tropical lake sediment and soil in the Greater Serengeti Ecosystem Open
Black carbon is a paleofire proxy that has been measured from glacial ice, snow, soils and lake sediments, though relatively few comparisons have been made with other fire indicators in sedimentary geoarchives. Microscopic charcoal, quanti…
View article: Climatic versus Anthropogenic Influences on Sediment Delivery to the Gulf of Mexico Marginal Sea since 5000 y BP
Climatic versus Anthropogenic Influences on Sediment Delivery to the Gulf of Mexico Marginal Sea since 5000 y BP Open
We present a compilation of provenance data derived from the lower reaches of the Mississippi river showing how the source of sediment supplied to the lower reaches has changed through time in the recent geologic past. We integrate data fr…
View article: Evaluating ecosystem services in urban salt marshes: Assessing vulnerability to sea-level rise and implications for coastal management
Evaluating ecosystem services in urban salt marshes: Assessing vulnerability to sea-level rise and implications for coastal management Open
This study presents a spatio-temporal framework that integrates ecosystem services into ecological risk assessment to evaluate the ecosystem service vulnerability of urban salt marshes to sea-level rise. The model was tested at Belle Isle …
View article: Land-use change as a major driver for mid-20th-century flood intensity reduction in the Southeastern US
Land-use change as a major driver for mid-20th-century flood intensity reduction in the Southeastern US Open
Land-use changes affect hydrologic processes, but their impact on flooding remains obscure amid increasingly heavy precipitation. Instrumental records are short relative to land-use change history and inadequate for flood attribution studi…
View article: Evaluation of hydroclimatic biases in the Community Earth System Model (CESM1) within the Mississippi River basin
Evaluation of hydroclimatic biases in the Community Earth System Model (CESM1) within the Mississippi River basin Open
The Mississippi River is a critical waterway in the United States, and hydrologic variability along its course represents a perennial threat to trade, agriculture, industry, the economy, and communities. The Community Earth System Model ve…
View article: Sunlight-Driven Photochemical Removal of Polypropylene Microplastics from Surface Waters Follows Linear Kinetics and Does Not Result in Fragmentation
Sunlight-Driven Photochemical Removal of Polypropylene Microplastics from Surface Waters Follows Linear Kinetics and Does Not Result in Fragmentation Open
Floating microplastics are susceptible to sunlight-driven photodegradation, which can convert plastic carbon to dissolved organic carbon (DOC) and can facilitate microplastic fragmentation by mechanical forces. To understand the photochemi…
View article: Accounting for hydroclimatic properties in flood frequency analysis procedures
Accounting for hydroclimatic properties in flood frequency analysis procedures Open
Flood hazard is typically evaluated by computing extreme flood probabilities from a flood frequency distribution following nationally defined procedures in which observed peak flow series are fit to a parametric probability distribution. T…
View article: Mississippi River low-flows: context, causes, and future projections
Mississippi River low-flows: context, causes, and future projections Open
The Mississippi River represents a major commercial waterway, and periods of anomalously low river levels disrupt riverine transport. These low-flow events occur periodically, with a recent event in the fall of 2022 slowing barge traffic a…
View article: Comment on hess-2022-292
Comment on hess-2022-292 Open
Abstract. Flood hazard is typically evaluated by computing extreme flood probabilities from a flood frequency distribution following nationally defined procedures in which observed peak flow series are fit to a parametric probability distr…
View article: A Hydraulic Modelling Approach to Study Flood Sediment Depositions in Floodplain Lakes
A Hydraulic Modelling Approach to Study Flood Sediment Depositions in Floodplain Lakes Open
Abandoned river channels on alluvial floodplains represent dynamic systems where sediments, organic matter, and pollutants preferentially accumulate during extreme discharge events. Descriptive models that explain the infilling of these fl…
View article: Mid-20th century land-use change greatly reduced flood intensity in the Southeastern US
Mid-20th century land-use change greatly reduced flood intensity in the Southeastern US Open
Land cover and land use influence hydrologic processes, but their impacts on flooding remain obscure amid intensifying land-use changes and the global increase in heavy precipitation. Instrumental records are short relative to the long his…
View article: Tropical Pacific and North Atlantic Sea Surface Temperature Patterns Modulate Mississippi Basin Hydroclimate Extremes Over the Last Millennium
Tropical Pacific and North Atlantic Sea Surface Temperature Patterns Modulate Mississippi Basin Hydroclimate Extremes Over the Last Millennium Open
Mississippi River basin floods impart large socioeconomic impacts over the central United States. Improving flood predictability depends on our understanding of the dynamical controls on Mississippi basin hydroclimate. However, short instr…
View article: Accounting for Hydroclimatic Properties in Flood Frequency Analysis Procedures
Accounting for Hydroclimatic Properties in Flood Frequency Analysis Procedures Open
Flood hazard is typically evaluated by computing extreme flood probabilities from a flood frequency distribution following nationally defined procedures in which observed peak flow series are fit to a parametric probability distribution. T…
View article: A hydraulic modelling approach to study flood sediment deposition in floodplain lakes
A hydraulic modelling approach to study flood sediment deposition in floodplain lakes Open
Abandoned river channels on alluvial floodplains represent areas where sediments, organic matter, and pollutants preferentially accumulate during overbank flooding. Theoretical models describing sedimentation in floodplain lakes recognize …
View article: Contrasting Ocean–Atmosphere Dynamics Mediate Flood Hazard across the Mississippi River Basin
Contrasting Ocean–Atmosphere Dynamics Mediate Flood Hazard across the Mississippi River Basin Open
The Mississippi River basin drains nearly one-half of the contiguous United States, and its rivers serve as economic corridors that facilitate trade and transportation. Flooding remains a perennial hazard on the major tributaries of the Mi…
View article: A Bayesian approach to integrating radiometric dating and varve measurements in intermittently indistinct sediment
A Bayesian approach to integrating radiometric dating and varve measurements in intermittently indistinct sediment Open
Annually laminated lake sediment can track paleoenvironmental change at high resolution where alternative archives are often not available. However, information about the chronology is often affected by indistinct and intermittent laminati…
View article: Reconstructing postglacial hydrologic and environmental change in the eastern Kenai Peninsula lowlands using proxy data and mass balance modeling
Reconstructing postglacial hydrologic and environmental change in the eastern Kenai Peninsula lowlands using proxy data and mass balance modeling Open
Despite extensive paleoenvironmental research on the postglacial history of the Kenai Peninsula, Alaska, uncertainties remain regarding the region's deglaciation, vegetation development, and past hydroclimate. To elucidate this complex env…
View article: Comment on gchron-2021-15
Comment on gchron-2021-15 Open
Abstract. Annually laminated lake sediment can track paleoenvironmental change at high resolution where alternative archives are often not available. However, information about the chronology is often affected by indistinct and intermitten…
View article: Comment on gchron-2021-15
Comment on gchron-2021-15 Open
Abstract. Annually laminated lake sediment can track paleoenvironmental change at high resolution where alternative archives are often not available. However, information about the chronology is often affected by indistinct and intermitten…
View article: New approaches to dating intermittently varved sediment, Columbine lake, Colorado, USA
New approaches to dating intermittently varved sediment, Columbine lake, Colorado, USA Open
Annually laminated lake sediment can track paleoenvironmental change at high-resolution where alternative archives are often not available. However, information about both paleoenvironmental change and chronology are often affected by indi…
View article: Improvements to Flood Frequency Analysis on Alluvial Rivers Using Paleoflood Data
Improvements to Flood Frequency Analysis on Alluvial Rivers Using Paleoflood Data Open
Hydrologists and engineers routinely use flood frequency analyses to compute flood probabilities for mitigation, infrastructure planning, and emergency management. Conventional flood frequency analyses—in which annual discharge maxima from…