Latitude: 44.8 (44°48’0″ N)
Longitude: -87.76 (87°45’36″ W)
The Green Bay buoy (GB17) is located approximately 40 km northeast of the mouth of the Fox River in southern Green Bay. The CB-1500 coastal data buoy is secured by a two-point mooring system over a mud substrate in 13 meters of water. The buoy is equipped with a solar-powered weather station and surface and near-bottom water quality sensors that collect data every 30 min, as well as a cellular modem for real-time data communication.
Meteorological data collected include wind speed and direction, temperature, relative humidity, pressure, and solar irradiance. Hydrological data include surface temperature, conductivity, pH, oxygen, photosynthetically active radiation, 20m temperature string, and acoustic Doppler current profiler (ADCP). In addition to surface water quality measurements, this buoy was fitted with a benthic sonde prior to the 2019 field season, which measures temperature, conductivity, turbidity, and dissolved oxygen at approximately 11.5 meters. This data is available upon request.
Surface water oxygen sensor data combined with meteorological data from this buoy are producing the first continuous estimates of oxygen exchange across the air-water interface, water column gross primary production (GPP), and net ecosystem production (NEP) in Green Bay. These data are contributing to a larger effort to understand the drivers of hypoxic and anoxic conditions in the bay. In addition to support from GLOS, this work is conducted in collaboration with the Fox-Wolf Watershed Alliance, University of Wisconsin- Green Bay and NEW Water.