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

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.

Keywords

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

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, in revision.

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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