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As heat is the leading cause of weather-related deaths in the United States, risk assessment of extreme temperature events is crucial in understanding the potential impacts of a changing climate on human health. By employing an intensity-duration-frequency (IDF) curve framework, ...

A draft version of the Sea Level Exploration and Assessment Tool (SEATool; https://seatool.epa.gov) was completed in 2021 and completed external peer review. With revised sea-level rise projections from NOAA released in early 2022, an update to the existing web application would ...

In a warming climate, increases in intensity and frequency of extreme rainfall events are being observed around the globe. To better quantify future risks associated with climate change in flood resilience and adaptation efforts, practitioners increasingly reach for downscaled fu...

Evidence is lacking for what constitutes effective climate change adaptation to successfully conserve and steward ecosystems. Yet we urgently need this information to develop robust adaptation strategies to keep pace with unprecedented change, given our limited resources to do so...

This study investigated the effect of relative humidity (RH) on the chemical composition of gas and particle phases formed from the photooxidation of 1,3-butadiene (13BD) in the presence of NOx under acidified andnon-acidified seed aerosol. The experiments were conducted in a 14....

Extensive cyanobacteria-dominated mats were observed during late summer of 2021 within coastal urban stormwater retention pond networks in northwest Florida. Common in residential communities across the region, such ponds may be routinely visited by humans, domestic and wild anim...

Coastal wetlands, including seagrass meadows, marshes, mangroves, and temperate tidal swamps, can efficiently sequester and store large quantities of sediment organic carbon (SOC). However, SOC stocks may vary by ecosystem type and along environmental or climate gradients at diff...

The presentation will provide an overview of EPA's climate research areas of focus, and highlight Agency priority areas and capabilities that tie to the work of the US Global Change Research Program (USGCRP).  This is part of a series of Agency presentations highlightin...

Wetland restoration is an increasingly popular nature-based method for reducing flooding impacts in coastal communities. In regions with steep topography such as Coos Bay, Oregon, wetland restoration reduces flooding by modulating the tidal signal through increased tidal prism. T...

Chronic exposure to stressors, such as watershed alteration, pollutants, and climate change (e.g., storms, drought, temperature) take a toll on the ecological health and resilience of estuarine systems. Thriving aquatic habitats, like seagrass beds and oyster reefs, are vital for...

Coral reefs off the coast of West Maui in Hawai'i are frequently subjected to highly turbid water, caused in part by terrigenous sediment inputs from stream gulches after rain events. Sediment has numerous deleterious consequences on scleractinian corals, including impacts on gro...

Understanding climate change impacts in combination with other anthropogenic stressors, such as chemical pollution, is critical to identifying vulnerable marine ecosystems. This paper presents a systematic review and conceptual model mapping evidence of the marine environmental f...

Climate-induced changes in streamflow and nutrient loading have important implications for estuarine water quality. We present an empirical approach for estimating changes in the magnitude, timing, and duration of streamflow based on statistically downscaled projections from glob...

GEMMD coral lab research will be presented to The Gulf of Mexico Alliance Federal Workgroup. Results from past and present research will be reviewed and including topics of sedimentation, ocean acidification, microplastics, chitosan (water quality), and sunscreen. Additionally, t...

Released in November 2023, the Fifth National Climate Assessment (NCA5) is the U.S. Government’s preeminent report on climate change impacts, risks and responses. Led by the U.S. Global Research Program (USGCRP) and its 14 member agencies, including the U.S. EPA, NCA5 draws...

Mountain lakes are sentinel ecosystems that provide unique ecological habitat and natural resources with high cultural and recreational value to communities globally. Despite their recognized importance, there is no consistent definition of what constitutes a mountain lake, and t...

Background Climate change is increasing the frequency of high heat and high humidity days. Whether these conditions can trigger ventricular arrhythmias [ventricular tachycardia/ventricular fibrillation, VT/VF] in susceptible persons is unknown. Objectives The purpose of this st...

Pellet-fueled cookstoves are a potentially valuable technology for people lacking access to gas or electric energy sources. This study examines three representative semi-gasifier cookstove models each burning four types of pelletized-biomass fuel (hardwood, peanut hull, risk husk...

Electrifying on-road trucking is a strategy for decarbonizing the transportation sector. While battery-electric trucks have zero tailpipe emissions, the associated increase in electric sector grid emissions would offset a portion of on-road emission reductions. We utilize a techn...

Climate-based warming has been affecting our coastal waters for decades, and there is some limited information suggesting that this warming may be enhanced in nearshore shallow waters. These areas are often important nursery areas and may support seagrass habitat. In contrast, mo...

Recognized by the National Weather Service as the leading weather-related cause of mortality in the United States (and around the world), heat waves are a ubiquitous hazard. The nature of heat hazards is complex, consisting of both objective components related to thermoregulation...

The NOAA Atlas 14 has long been considered the definitive resource to quantify probabilistic risks associated with extreme rainfall for infrastructure and engineering design. These risks are graphically characterized in intensity-duration-frequency (IDF) curves that indicate the ...

Alongside global climate change, many freshwater ecosystems are experiencing substantial shifts in the concentrations and compositions of salt ions coming from both land and sea.   We synthesize a risk framework for anticipating how climate change and increasing salt po...

GLIMPSE is a decision support tool being developed by the U.S. EPA to support long-term, integrated energy and environmental planning. GLIMPSE serves as a graphical user interface for the Global Change Analysis model, an open-source human-Earth systems model. GCAM allows users to...

Despite decades of emission control measuresaimed at improving air quality, Los Angeles (LA) continues toexperience severe ozone pollution during the summertime. Weincorporate cooking volatile organic compound (VOC) emissionsin a chemical transport model and evaluate it against o...