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Federal
U.S. Level III and IV Ecoregions (U.S. EPA)
U.S. Environmental Protection Agency —
This map service displays Level III and Level IV Ecoregions of the United States and was created from ecoregion data obtained from the U.S. Environmental Protection... -
Federal
AirData AQS REST API
U.S. Environmental Protection Agency —
A REST web service API allowing the retrieval of historical air quality data from EPA. -
Federal
Secondary data for study on the Impact of Hurricane Katrina on Southern Louisiana
U.S. Environmental Protection Agency —
Only secondary data was used for this study on the impact of Hurricane Katrina on Southern Louisiana The data sets include: land-cover data for Louisiana, social and... -
Federal
Metadata An analysis of degradation in low-cost particulate matter sensors
U.S. Environmental Protection Agency —
This file describes where to find the dataset used for this paper (PurpleAir and AQS) and the data fields used in the analysis. Contact the corresponding author for... -
Federal
Space-time paired simulation-observation records
U.S. Environmental Protection Agency —
Files uploaded to ScienceHub pair the model results in space and time to observations of NCAR NOy, NO, NO2 and O3, UC Berkeley NO2, peroxy nitrates, alkyl nitrates,... -
Federal
On the implications of aerosol liquid water and phase separation for organic aerosol mass
U.S. Environmental Protection Agency —
This dataset contains data presented in the figures of the paper "On the implications of aerosol liquid water and phase separation for organic aerosol mass" published... -
Federal
CMAQ model data provided by EPA/ORD researchers for Makar et al. (2025) paper. Model data at monitoring stations, gridded annual deposition fields, and gridded monthly median diurnal deposition diagnostics.
U.S. Environmental Protection Agency —
This dataset contains the CMAQ model data provided by EPA/ORD researchers for the Makar et al. (2025) paper. It includes CMAQ model data extracted at monitoring... -
Federal
Predictive Models for In Vitro Toxicokinetic Parameters to Inform High-throughput Risk-assessment_Prachi
U.S. Environmental Protection Agency —
The data used in this analysis was obtained from published literature and available through the high-throughput toxicokinetic (HTTK) R package. The dataset consists... -
Federal
Coupling of organic and inorganic systems and the effect on gas-particle partitioning in the southeastern United States
U.S. Environmental Protection Agency —
Several models were used to describe the partitioning of ammonia, water, and organic compounds between the gas and particle phases for conditions in the southeastern... -
Federal
Fire regimes of the conterminous United States
U.S. Environmental Protection Agency —
Fire regime information on 256 vegetation communities in the conterminous United States. This information is taken from the US Forest Service's LANDFIRE Rapid... -
Federal
The Chemical and Products Database v4.0, an updated resource supporting chemical exposure evaluations
U.S. Environmental Protection Agency —
Links to data for "The Chemical and Products Database v4.0, an updated resource supporting chemical exposure evaluations". This dataset is associated with the... -
Federal
Nelms_In Silico Guidance_In Vitro ToxCast Assays
U.S. Environmental Protection Agency —
The US EPA Toxicity Forecasting (ToxCast) project has involved the generation of large amount of high throughput in vitro data (Over 4000 chemicals tested in between... -
Federal
CMAQ CONUS (12US2) Input data for 2015-12-22 to 2016-01-31
U.S. Environmental Protection Agency —
Input files for running the Community Multiscale Air Quality (CMAQ) modeling system. Input files include emissions, meteorology, boundary and initial conditions, and... -
Federal
Regional Monitoring of Acidic Lakes and Streams
U.S. Environmental Protection Agency —
This asset provides data on the acid-base status of lakes and streams. Key chemical indicators measured include: sulfate, nitrate, ammonium, chloride, Acid... -
Federal
HTTK R Package v1.7 - Evaluation and Calibration of High-Throughput Predictions of Chemical Distribution to Tissues
U.S. Environmental Protection Agency —
httk: High-Throughput Toxicokinetics Functions and data tables for simulation and statistical analysis of chemical toxicokinetics ("TK") using data obtained from... -
Federal
Development, validation and integration of in silico models to identify androgen active chemicals
U.S. Environmental Protection Agency —
A diverse data set of 1667 chemicals with AR experimental activity were provided by the U.S. EPA from the oxicity Forecaster (ToxCast) program which generates data... -
Federal
Paper 2 Method 200.8
U.S. Environmental Protection Agency —
Data is for the Paper 2 Method 200.8 update on M2+ interference correction approaches. This dataset is associated with the following publication: Smith, S., R....