Related Topics: Climate Change Research

Climate Change Research Products in the Science Inventory

Records 1 to 25 of 358

Next >>
Unexpected Nitrogen Sources in a Tropical Urban Estuary (JOURNAL)
Tropical urban estuaries are severely understudied. Little is known about the basic biogeochemical cycles and dominant ecosystem processes in these waterbodies, which are often low lying and heavily modified. The San Juan Bay Estuary (SJBE) in San Juan, Puerto Rico, is an example...
Solar UV radiation in a changing world: roles of cryosphere–land–water–atmosphere interfaces in global biogeochemical cycles (JOURNAL)
Global change influences biogeochemical cycles within and between environmental compartments (i.e., the cryosphere, terrestrial and aquatic ecosystems, and the atmosphere). A major effect of global change on carbon cycling is altered exposure of natural organic matter (NOM) to so...
Dry Deposition of Ozone Over Land: Processes, Measurement, and Modeling (JOURNAL)
Dry deposition of ozone is an important sink of ozone in near surface air. When dry deposition occurs through plant stomata, ozone can injure the plant, altering water and carbon cycling and reducing crop yields. Quantifying both stomatal and nonstomatal uptake accurately is rele...
Mapping Aedes aegypti (Diptera: Culicidae) and Aedes albopictus Vector Mosquito Distribution in Brownsville, TX (JOURNAL)
Aedes mosquitoes are vectors of several emerging diseases and are spreading worldwide. We investigated the spatiotemporal dynamics of Aedes aegypti and Ae. albopictus mosquito trap captures in Brownsville, Texas using high-resolution land cover, sociological, and meteoro-logical ...
Ozone-related asthma emergency department visits in the US in a warming climate (JOURNAL)
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...
Significant ground-level ozone attributed to lightning-induced nitrogen oxides during summertime over the Mountain West States (JOURNAL)
Using lightning flash data from the National Lightning Detection Network with an updated lightning nitrogen oxides (NOx) emission estimation algorithm in the Community Multiscale Air Quality (CMAQ) model, we estimate the hourly variations in lightning NOx emissions for the summer...
An Integrated Agriculture, Atmosphere, and Hydrology Modeling System for Ecosystem Assessments (JOURNAL)
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 ...
Quantifying national and regional cyanobacterial occurrence in US lakes using satellite remote sensing (JOURNAL)
Cyanobacterial harmful algal blooms are the most common form of harmful algal blooms in freshwater systems throughout the world. However, in situ sampling of cyanobacteria in inland lakes is limited both spatially and temporally. Satellite data has proven to be an effective tool ...
Projections of Atmospheric Nitrogen Deposition to the Chesapeake Bay Watershed (JOURNAL)
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...
New Bidirectional Ammonia Flux Model in an Air Quality Model Coupled With an Agricultural Model (JOURNAL)
Ammonia surface flux is often bidirectional, i.e., net flux can be either upward or downward. In fertilized agricultural croplands and grasslands there is usually more emission than deposition especially in mid-day during warmer seasons. In North America, most of the ammonia emi...
Influence of multi-decadal land use, irrigation practices and climate on riparian corridors across the Upper Missouri River headwaters basin, Montana (JOURNAL)
The Upper Missouri River headwaters (UMH) basin (36 400 km2) depends on its river corridors to support irrigated agriculture and world-class trout fisheries. We evaluated trends (1984–2016) in riparian wetness, an indicator of the riparian condition, in peak i...
Rubbertown Next Generation Emissions Measurements Demonstration Project June 2019 (JOURNAL)
Product Description: Industrial facilities have the potential to emit volatile organic compounds (VOCs), hazardous air pollutants (HAPs), and odorous species from unintended sources including fugitive leaks, process malfunctions, and improperly controlled operations. Stochastic i...
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)
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...
A modeling approach combining elevated atmospheric CO2 effects on protein, iron and zinc availability with projected climate change impacts on global diets (JOURNAL)
We used a global economic model of the agricultural sector to project per capita availability of protein, iron, and zinc in 2050. Estimated changes in productivity of individual agricultural commodities were used to model effects on production, trade, prices, and consumption. The...
Lightning NOx Emissions and the Implications for Surface Air Quality over the Contiguous United States (JOURNAL)
As one of the largest sources of natural NOX, it is estimated that lightning-induced NOX (LNOX) contributes 10-15% of the total global NOX emissions budget. Lightning activity exhibits strong spatial and temporal variations, and consequently so does the tropospheric distribution ...
Workshop To Evaluate Uncertainties In The Assessment Of The Impacts Of Global Change On Air Quality (JOURNAL)
A workshop will be conducted to evaluate approaches for characterizing, quantifying and communicating uncertainty when assessing global change effects on US air quality. The discussion focused on the US EPA ORD Global Research Program Air Quality assessment -- a complex, model-b...
Benchmarking a 2016 Honda Civic 1.5L Turbo Engine and Evaluating the Future Efficiency Potential of Turbocharged Engines (JOURNAL)
As part of the U.S. Environmental Protection Agency’s continuing assessment of advanced light-duty automotive technologies to support the setting of appropriate national greenhouse gas standards, and to evaluate the impact of new technologies on in-use emissions, a 2016 Honda Civ...
Penumbra: A spatially distributed, mechanistic model for simulating ground-level incident solar energy across heterogeneous landscapes (JOURNAL)
Landscape solar energy is a significant environmental driver, yet it remains complicated to model well. Several solar radiation models simplify the complexity of light by estimating it at discrete point locations or by averaging values over larger areas. These modeling approaches...
Actively Heated High-Resolution Fiber-Optic Distributed Temperature Sensing to Quantify Flow Dynamics in Zones of Strong Groundwater Upwelling (JOURNAL)
Zones of strong groundwater upwelling to streams enhance thermal stability and moderate thermal extremes, which is particularly important to aquatic ecosystems in a warming climate. Passive thermal tracer methods used to quantify vertical upwelling rates rely on downward conduct...
Updates to the Noah Land Surface Model in WRF‐CMAQ to Improve Simulated Meteorology, Air Quality, and Deposition (JOURNAL)
Regional, state, and local environmental regulatory agencies often use Eulerian models to investigate the potential impacts on pollutant deposition and air quality from changes in land use, anthropogenic and natural emissions, and climate. The Noah land surface model (LSM) in th...
Integrating multimedia models to assess nitrogen losses from the Mississippi River basin to the Gulf of Mexico (JOURNAL)
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...
Experimental and model estimates of the contributions from biogenic monoterpenes and sesquiterpenes to secondary organic aerosol in the southeastern United States (JOURNAL)
Atmospheric organic aerosol (OA) has important impacts on climate and human health but its sources remain poorly understood. Biogenic monoterpenes and sesquiterpenes are important precursors of secondary organic aerosol (SOA), but the amounts and pathways of SOA generation from t...
Examining WRF’s Sensitivity to Contemporary Land-Use Datasets across the Contiguous United States Using Dynamical Downscaling (JOURNAL)
Land use (LU) representation plays a critical role in simulating air-surface interactions that affect meteorology and regional climate. In the Noah LSM within the WRF model, LU categories are used to set the radiative properties of the surface and to influence exchanges of heat, ...
The potential effects of climate change on air quality across the conterminous US at 2030 under three Representative Concentration Pathways (JOURNAL)
The potential impacts of climate change on regional ozone (O3) and fine particulate (PM2.5) air quality in the United States are investigated by downscaling Community Earth System Model (CESM) global climate simulations with the Weather Research and Forecasting (WRF) model, then ...
Occupancy modeling species–environment relationships with non‐ignorable survey designs (JOURNAL)
Statistical models supporting inferences about species occurrence patterns in relation to environmental gradients are fundamental to ecology and conservation biology. A common implicit assumption is that the sampling design is ignorable and does not need to be formally accounted ...
Next >>