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  4. Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2020

Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2020

Dates

Publication Date

Citation

Soroka, A.M., and Blomquist, D.J., 2020, Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2020: U.S. Geological Survey data release, https://doi.org/10.5066/P9QU1DWS.

Summary

Note: This data release has been superseded by https://doi.org/10.5066/P9N4MPIH Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes from nine tributaries to the Chesapeake Bay from 1985 to 2020. Data are presented from tributaries within the USGS River Input Monitoring (RIM) network identified by site numbers: 01491000, 01578310, 01594440, 01646580, 01668000, 01673000, 01674500, 02035000, 02041650. Periods of estimation include January through May and November through May. The estimates are made using up-to-date streamflow and all total nitrogen analyses available as of June 1 of the reporting year.

Contacts

Originator :
Alexander M Soroka, Joel D Blomquist
Point of Contact :
Alexander M Soroka
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Maryland-Delaware-D.C. Water Science Center
USGS Mission Area :
Water Resources

Attached Files

Click on title to download individual files attached to this item.

Spring_Nitrogen_Fluxes_1985_2020.xml
“Metadata file”
Original FGDC Metadata
View 		18.33 KB application/fgdc+xml
Jan_May_TN_Sites.csv
“January through May total nitrogen flux by site” 		10.66 KB text/csv
Jan_May_TN_total.csv
“January through May total nitrogen flux from all tributaries” 		1.02 KB text/csv
Nov_May_TN_total.csv
“November through May total nitrogen flux from all tributaries” 		1.02 KB text/csv

Purpose

Spring nitrogen fluxes are an effective indicator of summer hypoxic and anoxic volume in Chesapeake Bay. Current models utilize strong relationships between nitrogen fluxes delivered during two periods (November through May and January through May) to estimate mid-summer hypoxic and anoxic zones. The U.S. Geological Survey (USGS) provides an estimate of nitrogen flux for these two periods to support an annual forecast of summer Chesapeake Bay conditions.

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  • USGS Maryland, Delaware, and the District of Columbia Water Science Center

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Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9QU1DWS

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