Dataset for "Alkalinity in Tidal Tributaries of the Chesapeake Bay" Public

Journal of Geophysical Research - Oceans DOI:10.1029/2019JC015597

Journal of Geophysical Research–Oceans, DOI:10.1029/2019JC015597. Despite the important role of alkalinity in estuarine carbon cycling, the seasonal and decadal variability of alkalinity, particularly within multiple tidal tributaries of the same estuary, is poorly understood. Here we analyze more than 26,000 alkalinity measurements, mostly from the 1980s and 1990s, in the major tidal tributaries of the Chesapeake Bay, a large, coastal-plain estuary of eastern North America. The long-term means of alkalinity in tidal-fresh waters vary by a factor of 6 among seven tidal tributaries, reflecting the alkalinity of non-tidal rivers draining to these tidal tributaries. At 25 stations, mostly in the Potomac River Estuary, we find significant long-term increasing trends that exceed the trends in the non-tidal rivers upstream of those stations. Box model calculations in the Potomac River Estuary indicate that the main cause of the estuarine trends is a declining alkalinity sink. The magnitude of this sink is consistent with a simple model of calcification by the invasive bivalve Corbicula fluminea. More generally, in tidal tributaries fed by high-alkalinity non-tidal rivers, alkalinity is consumed, with sinks ranging from 8 to 27% of the upstream input. In contrast, tidal tributaries that are fed by low-alkalinity non-tidal rivers have sources of alkalinity amounting to 34 to 171% of the upstream input. For a single estuarine system, the Chesapeake Bay has diverse alkalinity dynamics and can thus serve as a laboratory for studying the numerous processes influencing alkalinity among the world’s estuaries.

README

This README.md file was generated on 20191126 by Maria Herrmann

General Information

Title:

Data for "Alkalinity in Tidal Tributaries of the Chesapeake Bay",
Journal of Geophysical Research - Oceans, DOI:10.1029/2019JC015597.

Author Information:

  • Principal Investigator: Raymond G. Najjar (rgn1@psu.edu)
  • Associate or Co-investigators: Maria Herrmann (mxh367@psu.edu), Sebastian M. Cintron Del Valle, Jaclyn R. Friedman, Marjorie A. M. Friedrichs, Lora A. Harris, Elizabeth H. Shadwick, Edward G. Stets, Ryan J. Woodland

Date of data collection/creation:

The data cover the period between 1984 and 2018

Geographic location of data collection:

Chesapeake Bay, longitude range: -78E to -75E, latitude range: 36N to 40N

Sharing/Access Information

License & restrictions on data reuse:

Creative Commons Attribution 4.0 International (CC BY 4.0)

Recommended citation for the data:

Raymond G. Najjar, Maria Herrmann, Sebastian M. Cintron Del Valle,
Jaclyn R. Friedman, Marjorie A. M. Friedrichs, Lora A. Harris, Elizabeth H.
Shadwick, Edward G. Stets, and Ryan J. Woodland, 2019. Dataset for
"Alkalinity in Tidal Tributaries of the Chesapeake Bay", Penn State Scholar
Sphere, DOI:10.26207/w1vs-jz06.

Related publications:

Raymond G. Najjar, Maria Herrmann, Sebastian M. Cintron Del Valle,
Jaclyn R. Friedman, Marjorie A. M. Friedrichs, Lora A. Harris, Elizabeth H.
Shadwick, Edward G. Stets, and Ryan J. Woodland, 2019. Alkalinity in Tidal
Tributaries of the Chesapeake Bay. Journal of Geophysical Research - Oceans,
DOI:10.1029/2019JC015597.

Data & File Overview

File list:

bivalvedatafixed.nc: bivalve biomass at fixed stations 36 and 40
bivalvedatarandom.nc: bivalve biomass at the random staions Box 1 and 2
nontidaldatareduced.nc: alkalinity and streamflow data at non-tidal stations, reduced dataset
nontidaldatawhole.nc: alkalinity and streamflow data at non-tidal stations, whole processed dataset
nontidalstationlist.nc: geolocation of non-tidal stations
savdata.nc: areal extent of SAV coverage in Box 1 and 2
tidal
datareduced.nc: alkalinity and salinity data at tidal stations, reduced dataset
tidal
datawhole.nc: alkalinity and salinity data at tidal staitions, whole procesed dataset
tidal
station_list.nc: geolocation of tidal stations

Additional notes:

The data were derived from the Chesapeake Bay program's Water Quality
Database (http://data.chesapeakebay.net/WaterQuality), United States Geological
Survey monitoring data (https://nwis.waterdata.usgs.gov/nwis), and Virginia
Institute of Marine Science long-term aerial imagery monitoring dataset
for the Chesapeake Bay (https://scholarworks.wm.edu/data/156).

File/Format-Specific Information

See attributes in individula NetCDF data files.

Methodological Information

See methods and supplementary information in the manuscript.

Items in this Work

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User Maria Herrmann has updated Dataset for "Alkalinity in Tidal Tributaries of the Chesapeake Bay" 8 days ago
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