Publications
Filter Total Items: 1434
The North American greenhouse gas budget: Emissions, removals, and integration for CO2, CH4, and N2O (2010–2019): Results From the Second REgional Carbon Cycle Assessment and Processes Study (RECCAP2) The North American greenhouse gas budget: Emissions, removals, and integration for CO2, CH4, and N2O (2010–2019): Results From the Second REgional Carbon Cycle Assessment and Processes Study (RECCAP2)
Accurate accounting of greenhouse-gas (GHG) emissions and removals is central to tracking progress toward climate mitigation and for monitoring potential climate-change feedbacks. GHG budgeting and reporting can follow either the Intergovernmental Panel on Climate Change methodologies for National Greenhouse Gas Inventory (NGHGI) reporting or use atmospheric-based “top-down” (TD)...
Authors
Benjamin Poulter, Guillermo Murray-Tortarolo, Daniel J. Hayes, Philippe Ciais, Robbie M. Andrew, Ana Bastos, Brendan Byrne, David Butman, Josep G. Canadell, Abhishek Chatterjee, Grant Domke, Andrew F. Feldman, Kelsey Foster, Neha Hunka, Robert B. Jackson, Werner A. kurz, Ayia Lindquist, Maodian Liu, Ingrid Luijkx, Arnaud Mialon, Anna M. Michalak, John Miller, Wolfgang A. Obermeier, Naiqin Pan, James T. Randerson, Peter A. Raymond, Pierre Regnier, Laure Resplandy, Gerard Rocher-Ros, Nemesio Rodriquez-Fernandez, Judith A. Rosentreter, Julio Cesar Salazar-Neira, Suzanne E. Tank, Hanqin Tan, Rodrigo Vargas, Yohanna Villalobos, Jonathan A. Wang, Xinyuan Wei, Kimberly Wickland, Christopher J. Williams, Lisamarie Windham-Myers, Christopher W. Woodall, Qing Ying, Zhen Zhang
Applying U-Th disequilbrium for dating siliceous sinters Applying U-Th disequilbrium for dating siliceous sinters
Continental hydrothermal systems are critical avenues for the crustal transport of heat and mass captured for geothermal energy and mineral exploration. Thus, understanding their temporal evolution and longevity is important for resource characterization. Deposits of microlaminated siliceous sinter, common surface expressions of high temperature reservoirs (> 170 °C), have the potential...
Authors
Lauren Sankovitch, Carolina Munoz-Saez, Adam M. Hudson, Linda V. Godfrey, Jay Michael Thompson
An enhanced national-scale urban tree canopy cover dataset for the United States An enhanced national-scale urban tree canopy cover dataset for the United States
Moderate-resolution (30-m) national map products have limited capacity to represent fine-scale, heterogeneous urban forms and processes, yet improvements from incorporating higher resolution predictor data remain rare. In this study, we applied random forest models to high-resolution land cover data for 71 U.S. urban areas, moderate-resolution National Land Cover Database (NLCD) Tree...
Authors
Lucila Marie Corro, Kenneth J. Bagstad, Mehdi Heris, Peter Christian Ibsen, Karen Schleeweis, James E. Diffendorfer, Austin Troy, Kevin Megown, Jarlath P.M. O'Neil-Dunne
Interoperability for ecosystem service assessments: Why, how, who, and for whom? Interoperability for ecosystem service assessments: Why, how, who, and for whom?
Despite continued, rapid growth in the literature, the fragmentation of information is a major barrier to more timely and credible ecosystem services (ES) assessments. A major reason for this fragmentation is the currently limited state of interoperability of ES data, models, and software. The FAIR Principles, a recent reformulation of long-standing open science goals, highlight the...
Authors
Kenneth J. Bagstad, Stefano Balbi, Greta Adamo, Ioannis Athanasiadis, Flavio Affinito, Simon Willcock, Ainhoa Magrach, Kiichiro Hayashi, Zuzana Harmackova, Aidin Niamir, Bruno Smets, Marcel Buchhorn, Evangelia Drakou, Alessandra Alfieri, Bram Edens, Luis Gonzalez Morales, Agnes Vari, Maria-Jose Sanz, Ferdinando Villa
Land-use and socioeconomic time-series reveal legacy of redlining on present-day gentrification within a growing United States city Land-use and socioeconomic time-series reveal legacy of redlining on present-day gentrification within a growing United States city
Home Owners’ Loan Corporation (HOLC) maps illustrated patterns of segregation in United States cites in the 1930s. As the causes and drivers of demographic and land-use segregation vary over years, these maps provide an important spatial lens in determining how patterns of segregation spatially and temporally developed during the past century. Using a high-resolution land-use time series...
Authors
Peter Christian Ibsen, Anna Bierbrauer, Lucila Marie Corro, Zachary H. Ancona, Mark Drummond, Kenneth J. Bagstad, James E. Diffendorfer
Re-evaluating the tectonic affinity of Proterozoic crustal provinces in the Southwest USA: Detrital zircon evidence for a Laurentian source for the Yavapai and Mojave Provinces Re-evaluating the tectonic affinity of Proterozoic crustal provinces in the Southwest USA: Detrital zircon evidence for a Laurentian source for the Yavapai and Mojave Provinces
Models for crustal growth commonly involve the accretion of dominantly juvenile crust to continental margins. However, tracking the provenance and tectonic affinity of dominantly juvenile crustal provinces is challenging. This difficulty is highlighted by uncertainty over whether the Yavapai and Mojave Provinces, part of the >1300-km-wide system of Proterozoic orogens in southwestern...
Authors
Ian William Hillenbrand, Amy K. Gilmer, Wayne R. Premo, Michael L. Williams, Michael J. Jercinovic
Luminescence dating of stone structures in northeastern United States Luminescence dating of stone structures in northeastern United States
There is no consensus on who built the numerous stone structures that dot the archaeological landscape in the northeastern United States. Professional archaeologists traditionally have attributed them to colonial farmers, but increasing numbers of archaeologists have joined many nonprofessional groups and Native Americans in arguing for Indigenous origins. Better understanding of these...
Authors
Jim Feathers, Shannon A. Mahan
Quantifying the effect of petrogenic carbon on SOC turnover for two Rocky Mountain soils: When are petrogenic carbon corrections required? Quantifying the effect of petrogenic carbon on SOC turnover for two Rocky Mountain soils: When are petrogenic carbon corrections required?
Petrogenic organic carbon (OCpetro), derived from sedimentary rocks, is an often overlooked and poorly quantified source of soil organic carbon (SOC), which may influence measured or modeled SOC composition, age, and stability. In this study, we exploited differences in thermochemical stability between OCpetro and biogenic SOC (OCbio) using stepped elemental analysis to quantify the...
Authors
Elizabeth Kellisha Williams, Corey Lawrence
Light absorbing particles deposited to snow cover across the Upper Colorado River Basin, Colorado Rocky Mountains, 2013-16: Interannual variations from multiple natural and anthropogenic sources Light absorbing particles deposited to snow cover across the Upper Colorado River Basin, Colorado Rocky Mountains, 2013-16: Interannual variations from multiple natural and anthropogenic sources
Atmospheric particulate matter (PM) as light-absorbing particles (LAPs) deposited to snow cover can result in early onset and rapid snow melting, challenging management of downstream water resources. We identified LAPs in 38 snow samples (water years 2013–2016) from the mountainous Upper Colorado River basin by comparing among laboratory-measured spectral reflectance, chemical, physical...
Authors
Richard L. Reynolds, Harland L. Goldstein, Raymond F. Kokaly, Heather A. Lowers, Geroge N. Breit, Bruce M. Moskowitz, Peat Solheid, Jeff Derry, Corey Lawrence
Evidence for nonlocal sediment transport on hillslopes from fault scarp morphology Evidence for nonlocal sediment transport on hillslopes from fault scarp morphology
Hillslope sediment transport processes such as bioturbation, rainsplash, and granular mechanics occur across the entire planet. Yet, it remains uncertain how these small-scale processes act together to shape landscapes. Longstanding hillslope diffusion theory posits that hillslope processes are spatially limited, whereas new concepts of nonlocal sediment transport argue otherwise...
Authors
Harrison J. Gray, Tyler Doane, Sylvia R. Nicovich, Christopher DuRoss, Ryan D. Gold
History of terrestrial ecosystem development in southern Alexander Archipelago, Alaska since the onset of deglaciation History of terrestrial ecosystem development in southern Alexander Archipelago, Alaska since the onset of deglaciation
This chapter focuses on reconstructing the history of vegetation development in southern Alexander Archipelago (AA) of southeast Alaska during and after deglaciation up to the present day. It also summarizes key findings from recent paleoceanographic research in the Gulf of Alaska to provide a detailed, well-dated record of late Quaternary climate changes for the region. Understanding...
Authors
Thomas A. Ager, James F Baichtal
Modelling and mapping burn severity of prescribed and wildfires across the southeastern United States (2000-2022) Modelling and mapping burn severity of prescribed and wildfires across the southeastern United States (2000-2022)
Background The southeastern United States (‘Southeast’) experiences high levels of fire activity, but the preponderance of small and prescribed fires means that existing burn severity products are incomplete across the region. Aims We developed and applied a burn severity model across the Southeast to enhance our understanding of regional burn severity patterns. Methods We used Composite...
Authors
Melanie K. Vanderhoof, Casey Elizabeth Menick, Joshua J. Picotte, Kevin Robertson, Holly Nowell, Chris Matechik, Todd Hawbaker