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Records 1 to 25 of 71

Impact of climate change on groundwater resource in a region with a fast depletion rate: the Mississippi Embayment
(JOURNAL) [Published : Sep 01, 2021]
Mississippi Embayment (ME) is one of the fastest groundwater depletion regions around the world, while the impacts of climate change on groundwater resources in the region are complex and basically unknown. Using the U.S. Geological Survey's Mississippi Embayment Regional Aquifer...
Regional Temperature-Ozone Relationships Across the U.S. Under Multiple Climate and Emissions Scenarios
(JOURNAL) [Published : Oct 05, 2021]
The potential effects of 21st century climate change on ozone (O3) concentrations in the United States are investigated using global climate simulations to drive higher-resolution regional meteorological and chemical transport models. Community Earth System Model (CESM) and Coupl...
Evaluating long-term emission impacts of large-scale electric vehicle deployment in the US using a human-Earth systems model
(JOURNAL) [Published : Oct 15, 2021]
While large-scale adoption of electric vehicles (EVs) globally would reduce carbon dioxide (CO2) and traditional air pollutant emissions from the transportation sector, emissions from the electric sector, refineries, and potentially other sources would change in response. Here, a...
Examining the impacts of increased corn production on groundwater quality using a coupled modeling system
(JOURNAL) [Published : May 15, 2017]
This study demonstrates the value of a coupled chemical transport modeling system for investigating groundwater nitrate contamination responses associated with nitrogen (N) fertilizer application and increased corn production. The coupled Community Multiscale Air Quality Bidirect...
Grassland-to-cropland conversion increased soil, nutrient, and carbon losses in the US Midwest between 2008 and 2016
(JOURNAL) [Published : May 07, 2021]
After decades of declining cropland area, the United States (US) experienced a reversal in land use/land cover change in recent years, with substantial areas in grassland cover converting to cropland in the US Midwest. Although previous studies estimated soil carbon (C) loss due ...
Environmental and Cost Benefits of Co-Digesting Food Waste at Wastewater Treatment Facilities - journal article
(JOURNAL) [Published : Jul 15, 2020]
The wastewater industry is in the midst of a paradigm shift from focusing solely on treatment to incorporating concepts aimed at mitigating environmental impacts such as energy and nutrient recovery and water reuse. This study uses life cycle assessment and life cycle cost analys...
Associations Between Simulated Future Changes in Climate, Air Quality, and Human Health
(JOURNAL) [Published : Jan 04, 2021]
Importance Future changes in climate are likely to adversely affect human health by affecting concentrations of particulate matter sized less than 2.5 μm (PM2.5) and ozone (O3) in many areas. However, the degree to which these outcomes may be mitigated by reducing air polluta...
Environmental and cost benefits of co-digesting food waste at wastewater treatment facilities
(JOURNAL) [Published : Jul 15, 2020]
The wastewater industry is undergoing a paradigm shift from focusing solely on treatment to incorporating concepts aimed at mitigating environmental impacts such as energy and nutrient recovery and water reuse. This study uses life cycle assessment and life cycle cost analysis to...
Applying the index of watershed integrity to the Matanuska–Susitna basin
(JOURNAL) [Published : Aug 27, 2020]
The Matanuska–Susitna Borough is the fastest growing region in the State of Alaska and is impacted by a number of human activities. We conducted a multiscale assessment of the stressors facing the borough by developing and mapping the Index of Watershed Integrity (IWI) and ...
Integrating Land Use and Socioeconomic Factors into Scenario-Based Travel Demand and Carbon Emission Impact Study
(JOURNAL) [Published : Mar 27, 2017]
Urban sprawl continues since the last century, leading to a rapid increase in automobile ownership and vehicle travel demand, while resulting in more traffic congestion and automobile emissions. Land use, serving as a source of travel demand, can significantly impact travel behav...
Universal industrial sectors integrated solutions modulefor the pulp and paper industry
(JOURNAL) [Published : Sep 01, 2017]
The U.S. is the world’s second-leading producer of pulp and paper products after China. While the pulp and paper industry has reduced its environmental impacts, concerns remain regarding the emissions of oxides of nitrogen (NOX) and sulfur dioxide (SO2) from the sector. Boilers, ...
A framework for nitrogen futures in the shared socioeconomic pathways
(JOURNAL) [Published : Mar 01, 2020]
Humanity’s transformation of the nitrogen cycle has major consequences for ecosystems, climate and human health, making it one of the key environmental issues of our time. Understanding how trends could evolve over the course of the 21st century is crucial for scientists an...
Ozone-related asthma emergency department visits in the US in a warming climate
(JOURNAL) [Published : Apr 01, 2020]
Ozone exposure is associated with higher risk of asthma-related emergency department visits. The meteorological conditions that govern ozone concentration are projected to be more favorable to ozone formation over much of the United States due to continued climate change, even as...
An Integrated Agriculture, Atmosphere, and Hydrology Modeling System for Ecosystem Assessments
(JOURNAL) [Published : Jan 24, 2020]
We present a regional‐scale integrated modeling system (IMS) that includes Environmental Policy Integrated Climate (EPIC), Weather Research and Forecast (WRF), Community Multiscale Air Quality (CMAQ), and Soil and Water Assessment Tool (SWAT) models. The centerpiece of the ...
Projections of Atmospheric Nitrogen Deposition to the Chesapeake Bay Watershed
(JOURNAL) [Published : Dec 26, 2019]
Atmospheric deposition is among the largest pathways of nitrogen loading to the Chesapeake Bay Watershed (CBW). The interplay between future climate and emission changes in and around the CBW will shift the future nutrient deposition abundance and regime (e.g., oxidized vs. redu...
Land-Use/Land-Cover Change from Socio-Economic Drivers and Their Impact on Biodiversity in Nan Province, Thailand
(JOURNAL) [Published : Jan 26, 2019]
The rate of deforestation declined steadily in Thailand since the year 2000 due to economic transformation away from forestry. However, these changes did not occur in Nan Province located in northern Thailand. Deforestation is expected to continue due to high demand for forest pr...
Combining the effects of increased atmospheric carbon dioxide on protein, iron, and zinc availability and projected climate change on global diets: a modelling study
(JOURNAL) [Published : Jul 01, 2019]
Background Increasing atmospheric concentrations of carbon dioxide (CO2) affect global nutrition via effects on agricultural productivity and nutrient content of food crops. We combined these effects with economic projections to estimate net changes in nutrient availability betw...
Managing Local Stressors for Coral Reef Condition and Ecosystem Services Delivery Under Climate Scenarios
(JOURNAL) [Published : Nov 09, 2018]
Coral reefs provide numerous ecosystem goods and services, but are threatened by multiple environmental and anthropogenic stressors. To identify management scenarios that will reverse or mitigate ecosystem degradation, managers can benefit from tools that can quantify projected c...
Estimates of Present and Future Asthma Emergency Department Visits Associated With Exposure to Oak, Birch, and Grass Pollen in the United States
(JOURNAL) [Published : Dec 15, 2018]
Pollen is an important environmental cause of allergic asthma episodes. Prior work has established a proof of concept for assessing projected climate change impacts on future oak pollen exposure and associated health impacts. This paper uses additional monitor data and epidemiolo...
Integrating multimedia models to assess nitrogen losses from the Mississippi River basin to the Gulf of Mexico
(JOURNAL) [Published : Nov 29, 2018]
This study describes and implements an integrated, multimedia, process-based system-level approach to estimating nitrogen (N) fate and transport in large river basins. The modeling system includes: 1) Community Multi-Scale Air Quality (CMAQ); 2) Water Research and Forecasting (WR...
A new method for assessing the efficacy of emission control strategies
(JOURNAL) [Published : Feb 15, 2019]
Regional-scale air quality models and observations at routine air quality monitoring sites are used to determine attainment/non-attainment of the ozone air quality standard in the United States. In current regulatory applications, a regional-scale air quality model is applied for...
Evaluating Biodiversity Metric Response to Forecasted Land Use Change in the Northern Rio Grande Basin
(JOURNAL) [Published : Aug 07, 2018]
The effects of future land use change on arid and semi-arid watersheds in the American Southwest have important management implications. Seamless, national-scale land-use-change scenarios for developed land were acquired from the US Environmental Protection Agency Integrated Clim...
Application of Climate Assessment Tool (CAT) to Estimate Climate Variability Impacts on Nutrient Loading from Local Watersheds
(JOURNAL) [Published : Aug 01, 2018]
A vast amount of future climate scenario datasets, created by climate models such as general circulation models (GCMs), have been used in conjunction with watershed models to project future climate variability impact on hydrological processes and water quality. However, these low...
Depressional wetlands affect watershed hydrological, biogeochemical, and ecological functions
(JOURNAL) [Published : Jun 01, 2018]
Depressional wetlands of the extensive U.S. and Canadian Prairie Pothole Region afford numerous ecosystem processes that maintain healthy watershed functioning. However, these wetlands have been lost at a prodigious rate over past decades due to drainage for development, climate ...
Characterizing the impact of projected changes in climate and air quality on human exposures to ozone
(JOURNAL) [Published : Jun 01, 2017]
The impact of climate change on human and environmental health is of critical concern. Population exposures to air pollutants both indoors and outdoors are influenced by a wide range of air quality, meteorological, behavioral, and housing-related factors, many of which are also i...