Computed (from pH) surface partial pressure and air-water flux of carbon dioxide in the mainstem Chesapeake Bay from 1998 to 2018

<p>This research was supported with funding from the National Science Foundation's Chemical Oceanography Program (OCE‐1536996 and OCE‐1537013). Additional support was provided by NASA through Grants NNX14AM37G and NNX14AF93G.</p>

<p>The data products are &nbsp;calculated partial pressure and air-sea flux of carbon dioxide in the main stem of Chesapeake Bay; the dataset also includes all the inputs to the calculation.</p>

<p>The data were derived from the Chesapeake Bay program's Water Quality&nbsp;Database, United States Geological &nbsp;Survey monitoring data, North American Regional Reanalysis, &nbsp;World Data Centre for Greenhouse Gases, and 2016-2018 carbonate system measurements the Chesapeake (Shadwick et al., 2019). See Related Datasets section.</p>

<p>The data are in the form of seven netCDF files:</p>

<p>1. results-pco2-gasex.nc: calculated monthly <em>p</em>CO₂and air-sea CO₂flux in the Chesapeake Bay mainstem, separated into 8 segments and for the total bay (point estimates and Monte Carlo ensembles).<br />
2. atmosph-apres-wspd2_xco2.nc: atmospheric data (squared wind speed, atmospheric pressure, and CO₂ mole fraction) used as inputs to the CO₂ flux calculation; also provided are intermediate calculation results (air<em>p</em>CO₂, CO₂ solubility, and gas transfer velocity).<br />
3. nontidal-susquehanna-alk-dic: alkalinity and DIC at the non-tidal station in the Susquehanna River at Conowingo, Maryland (USGS gauge number 01578310).<br />
4. tidal-33stations-database.nc: measured (Chesapeake Bay Program) and calculated variables at the 33 tidal stations in the Chesapeake Bay mainstem (temperature, salinity, oxygen, pH and alkalinity); at the surface- and at the native time resolution of the Chesapeake Bay Program.<br />
5. shadwick2019a-buoy-pco2.nc: hourly <em>p</em>CO2 calculated from the high-frequency measurements of temperature, salinity, and pH at the York River buoy (Shadwick et al. 2019a).<br />
6. shadwick2019b-cruises-alk-dic.nc: surface alkalinity and DIC measurements from 2016-2018 cruises in the Chesapeake Bay mainstem (Shadwick et al. 2019b).<br />
7. cbp-cruises-alk.nc: surface alkalinity measurements from 1986-1991 cruises in the Chesapeake Bay mainstem (Chesapeake Bay Program)</p>