Found 36 datasets matching filters.
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The Nonattainment Area - Lead (Pb-2008) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of...
Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - Sulfur Dioxide (SO2-2010) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation...
Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - 8 hr ozone (2008) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - Particulate Matter-2.5 24 hr (2006) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - Particulate Matter- 10 (1987) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
This is the metadata associated with Pavlovic et al. (2023) entitled "Empirical nitrogen and sulfur critical loads of U.S. tree species and their uncertainties with machine learning"...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: April 21, 2026 at 08:04 PM -
The Nonattainment Area - Particulate Matter-2.5 Annual (1997) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - 8 hr ozone (2015) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - Particulate Matter-2.5 (2012) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - 1 hr Ozone (1979) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - Carbon Monoxide (CO-1971) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
The Nonattainment Area - 8 hr Ozone (1997) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
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 maintain an active database...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: March 19, 2026 at 08:54 PM -
To better understand the current air quality status in the District, the following summary highlights key pollutants and their compliance with the National Ambient Air Quality Standards (NAAQS)....
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 10:38 PM -
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. The dataset is too large for...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: April 21, 2026 at 08:03 PM -
This dataset includes CMAQ model output, compiled publicly available observations, and model source code used in "Predicted impacts of heterogeneous chemical pathways on particulate sulfur over...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: April 21, 2026 at 08:06 PM -
A list by county of the current attainment status of the National Ambient Air Quality Standards (NAAQS).
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: April 04, 2026 at 08:55 PM -
The Nonattainment Area - Nitrogen Dioxide (NO2-1971) dataset was updated on March 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: May 13, 2026 at 09:37 PM -
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 is associated with the...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: April 21, 2026 at 07:59 PM -
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 maintain an active database...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: March 19, 2026 at 08:55 PM
