Related Topics: Climate Change Research

Climate Change Research Products in the Science Inventory

Records 1 to 25 of 682

Seasonality of nitrogen balances in a Mediterranean climate watershed, Oregon, US (JOURNAL)
We constructed a seasonal nitrogen (N) budget for the year 2008 in the Calapooia River Watershed (CRW), an agriculturally dominated tributary of the Willamette River (Oregon, U.S.) under Mediterranean climate. Synthetic fertilizer application to agricultural land (dominated by gr...
Polyploidy influences plant–environment interactions in quaking aspen (Populus tremuloides Michx.) (JOURNAL)
Quaking aspen (Populus tremuloides Michx.), a widespread and keystone tree species in North America, experienced heat and drought stress in the years 2002 and 2003 in the southwestern United States. This led to widespread aspen mortality that has altered the composition of forest...
Exposure and Human Health Evaluation of Airborne Pollution from the World Trade Center Disaster (JOURNAL)
In the days following the September 11, 2001, terrorist attack on New York City's World Trade Center (WTC) towers, many Federal agencies, including the U.S. Environmental Protection Agency (EPA), were called upon to bring their technical and scientific expertise to the national e...
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...
Interactions of predominant insects and diseases with climate change in Douglas-fir forests of western Oregon and Washington, U.S.A. (JOURNAL)
Forest disturbance regimes are beginning to show evidence of climate-mediated shifts associated with global climate change, and these patterns will likely continue due to continuing changes in environmental conditions. Tree growth is largely controlled by the physiological const...
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 ...
Improved soil temperature modeling using spatially explicit solar energy drivers (JOURNAL)
Modeling the spatial and temporal dynamics of soil temperature is deterministically complex due to the wide variability of several influential environmental variables, including soil column composition, soil moisture, air temperature, and solar energy. Landscape incident solar ra...
HTAP_v2.2: a mosaic of regional and global emission grid maps for 2008 and 2010 to study hemispheric transport of air pollution (JOURNAL)
The mandate of the Task Force Hemispheric Transport of Air Pollution (TF HTAP) under the Convention on Long-Range Transboundary Air Pollution (CLRTAP) is to improve the scientific understanding of the intercontinental air pollution transport, to quantify impacts on human health, ...
Nitrogen inputs drive nitrogen concentrations in U.S. streams and rivers during summer low flow conditions (JOURNAL)
Ecological and human health impairments related to excess nitrogen (N) remain widespread in U.S. streams and rivers despite recent efforts to reduce N loading. Many studies have quantified the relationship between N inputs to watersheds and stream N export in terms of mass loads....
Microbial ecoenzyme stoichiometry, nutrient limitation, and organic matter decomposition in wetlands of the conterminous United States (JOURNAL)
We analyzed microbial respiration and ecoenzyme activities related to microbial carbon, nitrogen, phosphorus, and sulfur acquisition in more than 900 freshwater and estuarine wetlands across the continental US as part of the US EPA Office of Water’s 2011 National Wetland Conditio...
A Maieutic Exploration of Nudging Strategies for Regional Climate Applications Using the WRF Model (JOURNAL)
The use of nudging in the Weather Research and Forecasting (WRF) Model to constrain regional climate downscaling simulations is gaining in popularity because it can reduce error and improve consistency with the driving data. While some attention has been paid to whether nudging i...
Adding to the Toolbox for Tidal-Inundation Mapping in Estuarine Areas (JOURNAL)
In estuaries, land-surface and tidal elevation conspire to influence the amount of salt-water inundation in a specific location, ultimately affecting the distribution of estuary vegetation. Plants vary in their tolerances to salinity and inundation. Understanding even small chang...
13C isotopic signature and C concentration of soil density fractions illustrate reduced C allocation to subalpine grassland soil under high atmospheric N deposition (JOURNAL)
We followed soil C fluxes in a subalpine grassland system exposed to experimentally increased atmospheric N deposition for 7 years. Earlier we found that, different from the plant productivity response, the bulk soil C stock increase was highest at the medium, not the high N inpu...
Long-term evaluation of air sensor technology under ambient conditions in Denver, Colorado (JOURNAL)
Air pollution sensors are quickly proliferating for use in a wide variety of applications, with a low price point that supports use in high-density networks, citizen science, and individual consumer use. This emerging technology motivates the assessment under real-world condition...
Inferring the source of evaporated waters using stable H and O isotopes. (JOURNAL)
Stable isotope ratios of H and O are widely used identify the source of water, e.g., in aquifers, river runoff, soils, plant xylem, and plant-based beverages. In situations where the sampled water is partially evaporated, its isotope values will have evolved along an evaporation ...
Can Air Quality Management Drive Sustainable Fuels Management at the Temperate Wildland-Urban Interface? (JOURNAL)
Sustainable fire management has eluded all industrial societies. Given increasing wildfire events and magnitude, prescribed burning is promoted as the key to reducing fire hazard, but resultant smoke can adversely affect public health and compliance with air quality standards. Ho...
Application of Climate Assessment Tool (CAT) to Estimate Climate Variability Impacts on Nutrient Loading from Local Watersheds (JOURNAL)
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...
Tale of two storms: Impact of extreme rain events on the biogeochemistry of Lake Superior (JOURNAL)
Climate change is expected to profoundly affect the Great Lakes region of North America. An increase in intensity and frequency of rain events is anticipated to deliver more runoff and to increase riverine inputs to Lake Superior's ecosystem. The effects of these changes on key b...
Connectivity of streams and wetlands to downstream waters: an integrated systems framework (JOURNAL)
Interest in connectivity has increased in the aquatic sciences, partly because of its relevance to the Clean Water Act. This paper has two objectives: (1) Provide a framework to understand hydrological, chemical, and biological connectivity, focusing on how headwater streams and ...
pH dependent octanol–water partitioning coefficients of microcystin congeners (JOURNAL)
Hazardous algal blooms can generate toxic compounds with significant health impacts for exposed communities. The ubiquitous class of algal toxins known as microcystins exhibits significant heterogeneity in its peptide structure, which has been minimally studied, given the signifi...
Evaluating the Performance of Household Liquefied Petroleum Gas Cookstoves (JOURNAL)
Liquefied Petroleum Gas (LPG) cookstoves are considered to be an important solution for mitigating household air pollution; however, their performance has rarely been evaluated. To fill the data and knowledge gaps in this important area, laboratory tests (number of tests: 89) wer...
A Framework to Quantify the Strength of the Ecological Links Between an Environmental Stressor and Final Ecosystem Services (JOURNAL)
Anthropogenic stressors such as climate change, fire, and pollution are driving shifts in ecosystem function and resilience. Scientists generally rely on biological indicators of these stressors to signal that ecosystem conditions have been altered beyond an acceptable amount. Ho...
Characterizing the impact of projected changes in climate and air quality on human exposures to ozone (JOURNAL)
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...
Comparison of Five Modeling Approaches to Quantify and Estimate the Effect of Clouds on the Radiation Amplification Factor (RAF) for Solar Ultraviolet Radiation (JOURNAL)
A generally accepted value for the Radiation Amplification Factor (RAF), with respect to the erythemal action spectrum for sunburn of human skin, is −1.1, indicating that a 1.0% increase in stratospheric ozone leads to a 1.1% decrease in the biologically damaging UV radiation in ...
The Lake-Catchment (LakeCat) Dataset: Characterizing landscape features for lake basins within the conterminous USA (JOURNAL)
Natural and human-related landscape features influence the ecology and water quality within lakes. It is critical, therefore, to quantify landscape features in a hydrologically meaningful way to effectively manage these important ecosystems. Such summaries of the landscape are of...