| Contributors | Affiliation | Role |
|---|---|---|
| Huettel, Markus | Florida State University (FSU - EOAS) | Principal Investigator, Contact |
| Berg, Peter | University of Virginia (UVA) | Co-Principal Investigator |
| Rauch, Shannon | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Two PME Minidot loggers were deployed July 11-17, 2017 in a subtropical inner shelf environment (Salinity: 35-36, temperature: 28-31°C) approximately 9 km south of Long Key in the Florida Keys (24° 43.52'N, 80° 49.85'W). The site was located at 9 ± 1 m water depth near the center of a large flat carbonate platform covered with coral sand. The instruments were installed on the 3OEC instrument at ~35 cm above the sediment-water interface.
The temperature and oxygen data are the data recorded by factory-calibrated loggers:
Sampling rate is 1 /min
Oxygen range is 0 to 150%
Oxygen Resolution 0.01 mg/L
Oxygen Accuracy of +/- 1 mg/L
Response Time Approximately 30 seconds for oxygen
Temperature Range 0 to 35 degrees C
Temperature Resolution 10 millidigrees
Temperature Accuracy +/- 0.1 degrees C
The method of data analysis is reported in Huettel et al. (2020).
BCO-DMO Processing:
- renamed fields to comply with BCO-DMO naming conventions;
- added ISO8601 date/time field in UTC.
| File |
|---|
3OEC_temp_O2.csv (Comma Separated Values (.csv), 751.26 KB) MD5:8a7f6b25dcedb496101cc085256eb705 Primary data file for dataset ID 849915 |
| Parameter | Description | Units |
| ISO_DateTime_EST | Date and time, Eastern Standard Time Zone; format follows ISO8601 standard: YYYY-MM-DDThh:mm:ss | unitless |
| Temperature_1 | Temperature | degrees Celsius |
| Dissolved_Oxygen_Saturation_1 | Percent dissolved oxygen saturation | percent (%) |
| Temperature_2 | Temperature | degrees Celsius |
| Dissolved_Oxygen_Saturation_2 | Percent dissolved oxygen saturation | percent (%) |
| ISO_DateTime_UTC | Date and time, UTC; format follows ISO8601 standard: YYYY-MM-DDThh:mm:ssZ | unitless |
| Dataset-specific Instrument Name | PME Minidot O2 logger |
| Generic Instrument Name | PME MiniDOT Logger |
| Dataset-specific Description | PME Minidot O2 logger; Serial number 458147, 482789. Calibrations: factory calibrated. |
| Generic Instrument Description | The PME miniDOT logger is a submersible sensor designed to measure water temperature and dissolved oxygen concentration. Dissolved oxygen is measured by an optode that measures lifetime-based luminescence quenching of a thin membrane. The sensing foil contains a coating with a variable fluorescence depending on the oxygen concentration of the surrounding water. The miniDOT reports in milligrams per liter (mg/L) and logs all measurements to an internal SD card. Also featured is a temperature sensor and batteries. Data can be offloaded to a computer via USB cable. The logger has an accuracy of +/- 5 percent (+/- 0.3 mg/L) for oxygen, and +/- 0.1 degrees Celsius for temperature. Temperature range is 0 to 35 degrees Celsius, oxygen range is 0 to 150 percent saturation. Depth-rated to 300 meters.
Instrument description from the manufacturer: https://www.pme.com/products/minidot |
| Website | |
| Platform | R/V Diodon |
| Start Date | 2017-07-11 |
| End Date | 2017-07-12 |
| Website | |
| Platform | R/V Diodon |
| Start Date | 2017-07-13 |
| End Date | 2017-07-14 |
| Website | |
| Platform | R/V Diodon |
| Start Date | 2017-07-15 |
| End Date | 2017-07-16 |
| Website | |
| Platform | R/V Diodon |
| Start Date | 2017-07-16 |
| End Date | 2017-07-17 |
NSF Award Abstract:
The PIs request funding to build and test robust eddy correlation instruments for unidirectional and oscillating flow environments based on sturdy fiber- and planar-optical sensors and novel signal-processing electronics. The new hardware will be supported by software development to correct potential flux underestimations caused by inadequate oxygen sensor response time and spatial offsets between oxygen and flow sensors. The fragility of the thin glass microelectrode used in aquatic eddy correlation instruments severely limits the use of this powerful technique for flux measurements in benthic environments. This problem represents the major bottleneck preventing the widespread use of this approach.
Broader Impacts:
The PIs have very strong records both in spreading the use of EC technology through the community and in graduate and undergraduate education. They outline clearly the ways in which they will continue their ongoing endeavors in both areas. In addition, the application of this technology to the geochemistry and ecology of shallow-water regions has broad implications for carbon cycling and ocean acidification studies, both of which have important societal ramifications. Better quantify oxygen fluxes in the aquatic environment is important for society. It can e.g. help predict when and if the health of an aquatic system is being weakened, and when e.g. hypoxia or anoxia is approaching. Anoxia leads to death of all higher life
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) | |
| NSF Division of Ocean Sciences (NSF OCE) |