Document Type

Data

Department/Program

Virginia Institute of Marine Science

Publication Date

6-2018

Abstract

The dataset includes model outputs used in publication Da et al. (2018), which used the Estuarine-Carbon-Biogeochemistry model embedded in the Regional-Ocean-Modeling-System (ChesROMS-ECB) to examine the relative impact of direct atmospheric dissolved inorganic nitrogen (DIN) deposition and DIN from the continental shelf on the Chesapeake Bay dissolved oxygen. Model simulations highlight that DIN from the atmosphere has roughly the same impact on hypoxia as the same gram-for-gram change in riverine DIN loading. DIN concentrations on the continental shelf has a similar overall impact on hypoxia as DIN from the atmosphere.

Description

These are daily model outputs used to generate results and figures shown in Da et al., Journal of Geophysical Research: Oceans, 2018. Please see associated journal article for details. There are seven folders, including one for standard model run, and six for sensitivity tests. All files are in netCDF format, which can be manipulated and displayed by a wide range of freely available (e.g. Python) and licensed software (e.g. MATLAB), see http://www.unidata.ucar.edu/software/netcdf/docs/. For detailed information about the open source model: Regional Ocean Modeling System (ROMS), see: www.myroms.org.

Folder Name | Description

  • reference: Model Output – Standard model run
  • atm_zero: Model Output – No direct atmospheric dissolved inorganic nitrogen (DIN) deposition, AtmN sensitivity test
  • atm_double: Model Output – Double direct atmospheric DIN deposition, AtmN sensitivity test
  • nud_zero: Model Output – Nudge to zero DIN concentrations along model open boundary on the continental shelf, CoastalN sensitivity test
  • nud_double: Model Output – Nudge to doubled DIN concentrations along model open boundary on the continental shelf, CoastalN sensitivity test
  • riv_reduce: Model Output – Reduce riverine DIN loading by the same amount as direct atmospheric DIN deposition, ΔRiverN sensitivity test
  • riv_increase: Model Output – Increase riverine DIN loading by the same amount as direct atmospheric DIN deposition, ΔRiverN sensitivity test

Note that both ocean_avg*.nc and ocean_dia*.nc files save daily averaged model outputs. Primary production rate is read from ocean_dia*.nc files, while other variables are read from ocean_avg*.nc files.

DOI

https://doi.org/10.21220/gaww-m696

Keywords

Atmospheric nitrogen deposition, oceanic nutrients, Chesapeake Bay, hypoxia, Regional Ocean Modeling System (ROMS)

Series

Associated Publications

Da, F., Friedrichs, M. A. M., and St-Laurent, P. (2018). Impacts of Atmospheric Nitrogen Deposition and Coastal Nitrogen Fluxes on Oxygen Concentrations in Chesapeake Bay. Journal of Geophysical Research: Oceans, v.123(7) : 5004-5025. https://doi.org/10.1029/2018JC014009

Publication Statement

Fei Da ORCID ID: 0000-0002-5330-5962 | Marjorie A. M. Friedrichs ORCID ID: 0000-0003-2828-7595 | Pierre St-Laurent ORCID ID: 0000-0002-1700-9509

Funding

Funding of this research was provided by the U.S. National Oceanic and Atmospheric Administration Interdisciplinary Science Program (NNX14AF93G), the National Science Foundation (OCE-1259187), and by sponsors of the computing facilities at the College of William and Mary (including contributions from the National Science Foundation, the Commonwealth of Virginia Equipment Trust Fund, and the Office of Naval Research).

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