• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2017-03-14T00:00:00.000+00:00

This layer represents the nitrogen flux coming from onsite sewage disposal systems (OSDS) (e.g., cesspools and septic tanks). OSDS point data were obtained from the University of Hawaii at Manoa...

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• Organization: Department of the Interior
• Updated: 2024-08-28T00:00:00Z

Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes summed from nine tributaries to the Chesapeake Bay from 1985 to 2024. Data are presented as the sum from...

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• Organization: Department of the Interior
• Updated: 2024-08-28T00:00:00Z

Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes summed from nine tributaries to the Chesapeake Bay from 1985 to 2023. Data are presented as the sum from...

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• Organization: Department of the Interior
• Updated: 2021-08-17T00:00:00Z

Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes summed from nine tributaries to the Chesapeake Bay from 1985 to 2021. Data are presented as the sum from...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2016-06-17

Figure summarizes uncertainty (error) in hourly gradient flux measurements by individual analyte. Flux uncertainty is derived from estimates of uncertainty in chemical gradients and turbulent...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2016-06-17

Table summarizes instrument precision assessed by collocating the two sample boxes. Precision is quantified as the standard deviation of the residuals of an orthogonal least squares regression of...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2016-06-17

Table summarizes instrument analytical detection limits, including liquid and equivalent air concentrations. This dataset is associated with the following publication: Rumsey, I. Application of...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2016-06-17

Figure summarizes diurnal profiles of uncertainty in the chemical gradient and transfer velocity measurements from which fluxes are calculated. This dataset is associated with the following...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2021-06-10T00:00:00.000+00:00

This dataset presents results from surface-tethered drifting sediment traps, zooplankton net tows, dissolved inorganic nutrient concentration analyses made on water column samples, and flow...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2023-11-13

This dataset represents estimated surface water TN flux within individual, local NHDPlusV2 catchments and upstream, contributing watersheds. Measured as kg N/km2.

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• csv

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-03-10T00:00:00.000+00:00

The Patuxent River estuary was investigated over a 25-hour tidal cycle from October 17-18, 1972, during the Patuxent River Cooperative Study (conducted by the University of Maryland). These data...

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• Organization: Department of the Interior
• Updated: 2020-08-25T00:00:00Z

This USGS data release presents tabular data of daily and annual (for the 9-month period March 1 through November 30) estimates of concentrations and fluxes of total and dissolved phosphorus,...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2002-11-19T00:00:00.000+00:00

The accession contains all of the observations made on the bottle casts during the Joint Global Ocean Flux Study (JGOFS)/ North Atlantic Bloom Experiment as part of North Atlantic Bloom Survey...

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• Organization: Department of the Interior
• Updated: 2021-09-28T00:00:00Z

Total Nitrogen (TN) rloadest models were developed to compute TN flux at School Branch at three USGS monitoring stations: School Branch at Maloney Road near Brownsburg, Indiana (03353415); School...

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• Organization: National Aeronautics and Space Administration
• Updated: 2026-02-17

This data set provides nitric oxide (NO), nitrous oxide (N2O), carbon dioxide (CO2) flux measurements, nitrogen (N) and phosphorus (P) pools, net N mineralization and nitrification rates, and...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2017-03-14T00:00:00.000+00:00

This layer represents the phosphorus flux coming from onsite sewage disposal systems (OSDS) (e.g., cesspools and septic tanks). OSDS point data were obtained from the University of Hawaii at Manoa...

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• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

This data release contains data sets and R code used to create regression models for estimating daily flux of suspended sediment, total nitrogen, and total phosphorus at the Kankakee River at...

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• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

The core equations of the SPARROW model (Schwarz and others, 2006) were implemented in differential form using the R programming language (R Core Team, 2017), as the basis of a tool for...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2023-02-15T00:00:00.000+00:00

The Nansen bottle/ primary productivity/ pigment, sediment trap; and Conductivity, Temperature and Depth (CTD) data were collected in North Atlantic Ocean, NW Atlantic (limit-40 W) as part of...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2025-07-23T00:00:00.000+00:00

This EnviroAtlas dataset includes annual nitrogen and sulfur deposition within each 12-digit HUC subwatershed for the year 2017. Values are provided for total oxidized nitrogen (HNO3, NO, NO2,...