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Federal
Herb species occurrence data across the US
U.S. Environmental Protection Agency —
This is a dataset of the abundance of herbaceous species across ~15,000 plots across the US, along with related site date (e.g. climate, soil pH, etc.). This dataset... -
Federal
Metadata for Coughlin et al. (2023) on impacts from N and S deposition on tree species across the CONUS
U.S. Environmental Protection Agency —
This is the metadata for Coughlin et al. (2023) which estimates effects from atmospheric deposition of nitrogen (N) and sulfur (S) on tree species across the CONUS.... -
Federal
Nonattainment Area - Carbon Monoxide (CO - 1971 Standard)
Department of Transportation —
The Nonattainment Area - Carbon Monoxide (CO-1971) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S.... -
Federal
Nonattainment Area - Nitrogen Dioxide (NO2 - 1971 Standard)
Department of Transportation —
The Nonattainment Area - Nitrogen Dioxide (NO2-1971) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S.... -
State
County Level Attainment Status of National Ambient Air Quality Standards (NAAQS)
State of New York —
A list by county of the current attainment status of the National Ambient Air Quality Standards (NAAQS). -
Federal
Metadata for Chuman et al. assessing the effects of bedrock on sensitivity to N deposition
U.S. Environmental Protection Agency —
This is the dataset used in Chuman et al., which is an assessment of the effect of nitrogen deposition on plant communities in the U.S. and Czech Republic, and how... -
Federal
Nonattainment Area - 1 hr Ozone (1979 Standard-Revoked)
Department of Transportation —
The Nonattainment Area - 1 hr Ozone (1979) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department... -
Federal
Nonattainment Area - Lead (Pb - 2008 Standard)
Department of Transportation —
The Nonattainment Area - Lead (Pb-2008) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of... -
Federal
Jampel PM2.5 Infant Mortality Environmental Epidemiology Manuscript Data Sets
U.S. Environmental Protection Agency —
We conducted an unmatched case-control study of 5,992 infant mortality cases and 60,000 randomly selected controls from a North Carolina Birth Cohort (2003-2015).... -
Federal
ozone hourly data at four monitoring sites
U.S. Environmental Protection Agency —
contains hourly ozone and meteorological data. This dataset is associated with the following publication: Schliep, E., A. Gelfand, and D. Holland. Alternating... -
Federal
Nonattainment Area - 8 hr Ozone (2008 Standard)
Department of Transportation —
The Nonattainment Area - 8 hr ozone (2008) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department... -
Federal
Spatial critical loads and other information from Coughlin et al. 2023.
U.S. Environmental Protection Agency —
Data provided in this repository are compiled Forest Inventory and Analysis program data that are reflective of the data used in the Coughlin et al. (2024)... -
Federal
Data for Sensitivity of Northeast U.S. surface ozone predictions to the representation of atmospheric chemistry in CRACMMv1.0
U.S. Environmental Protection Agency —
Data include public CMAQv5.3-5.4 code, the exact CMAQ code used in the accompanying manuscript, chemistry box model (F0AM) inputs, and CMAQ predictions of ozone at... -
Federal
Collection Congestion Mitigation and Air Quality (CMAQ)
Department of Transportation —
All 50 states and the District of Columbia submit annual reports of their CMAQ project obligations in March of every year. The FHWA uses these yearly submissions to... -
Federal
Deposition, critical loads, and exceedances for 1800-2025
U.S. Environmental Protection Agency —
This data includes gridded estimates of: (1) decadally averaged total N and S deposition for the conterminous US from 1800-2025, (2) critical loads from the National... -
Federal
Nonattainment Area - Particulate Matter - 2.5 24 hr (2006 Standard)
Department of Transportation —
The Nonattainment Area - Particulate Matter-2.5 24 hr (2006) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of the... -
Federal
Nonattainment Area - Particulate Matter - 10 (1987 Standard)
Department of Transportation —
The Nonattainment Area - Particulate Matter- 10 (1987) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S.... -
Federal
Nonattainment Area - Particulate Matter - 2.5 Annual (1997 Standard)
Department of Transportation —
The Nonattainment Area - Particulate Matter-2.5 Annual (1997) dataset was updated on September 30, 2025 by the Environmental Protection Agency (EPA) and is part of... -
Federal
Data For: Predicted impacts of heterogeneous chemical pathways on particulate sulfur over Fairbanks, Alaska, the N. Hemisphere, and the Contiguous United States
U.S. Environmental Protection Agency —
This dataset includes CMAQ model output, compiled publicly available observations, and model source code used in "Predicted impacts of heterogeneous chemical pathways... -
Federal
US-PROPS: Regional Application to Great Smoky Mountains National Park (McDonnell et al. 2022)
U.S. Environmental Protection Agency —
This dataset is the data and metadata associated with the application of the US-PROPS model to the Great Smoky Mountains National Park (GSMNP). It is a geodatabase of...