|Savidge, William||Skidaway Institute of Oceanography (SkIO)||Principal Investigator|
|Brandes, Jay||Skidaway Institute of Oceanography (SkIO)||Co-Principal Investigator|
|Edwards, Catherine||Skidaway Institute of Oceanography (SkIO)||Co-Principal Investigator|
|Stubbins, Aron||Skidaway Institute of Oceanography (SkIO)||Co-Principal Investigator|
|Copley, Nancy||Woods Hole Oceanographic Institution (WHOI BCO-DMO)||BCO-DMO Data Manager|
Chlorophyll fluorescence and turbidity backscatter were measured at two stations in Groves Creek salt marsh, Skidaway Island Georgia, USA from July 2013 to March 2015.
Chlorophyll and turbidity sampling: Chlorophyll fluorescence and turbidity backscatter at S2 and S8 were measured with Wetlabs FLNTUSB shuttered fluorometers. The deployment scheme for the FLNTUSB units was identical to that for the YSI and FLCDs. The YSIs, FLCD and FLNTUSB fluorometers were swapped out on the same schedules. At S2, the fluorometers were also mounted below the “moon pool” of the floating dock and were ~ 1m from the YSIs. At S8, they were collocated on the bottom frame with the other instruments.
Chlorophyll and turbidity data processing.
Raw turbidity backscatter and chlorophyll fluorescence counts have been converted to NTUs (nepthelometric turbidity unit) and chlorophyll concentration (ug chl l-1) units using the manufacturer calibration sheets that were provided with the instruments. No other processing has yet been done with the turbidity data. Chlorophyll data have been processed analogously to the CDOM data (above). While the chlorophyll data are likely to be “right” in a relative sense, the absolute value of the sonde readings underestimate in situ chlorophyll obtained from extracted samples by a factor of 2-3. Moreover, the contributions of turbidity and CDOM interference with the raw sonde signals have not been fully assessed.
BCO-DMO Processing notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions
- added station, lat, lon, date, time, ISO_DateTIme columns
- ISO Date format generated from date and time values
- blank values replaced with no data value 'nd'
|lat||latitude; north is positive||decimal degrees|
|lon||longitude; east is positive||decimal degrees|
|date||UTC date formatted as yyyy-mm-dd||unitless|
|time||UTC time; formatted as hh:mm||unitless|
|ISO_DateTime_UTC||Date/Time (UTC) ISO formatted based on ISO 8601:2004(E) with format YYYY-mm-ddTHH:MM:SS[.xx]Z||unitless|
|datenum_matlab||MATLAB formatted datenum||unitless|
|sonde_id||sonde instrument identifier||unitless|
|chl_a||concentration of chlorophyll||milligrams/liter (mg/l)|
|turbidity||turbidity||Nephelometric Turbidity Units (NTU)|
|Dataset-specific Instrument Name|| |
Wetlabs FLNTUSB shuttered fluorometers
|Generic Instrument Name|| |
|Generic Instrument Description|| |
A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.
Groves Creek - SkIO
|Start Date|| |
|End Date|| |
Studies of temporal and compositional changes in exported material in a saltmarsh, both the quantity and quality of dissolved organic matter (DOM) and particulate organic matter (POM) exported from Groves Creek.
This document is created by info v 4.1f 5 Oct 2018 from the content of the BCO-DMO metadata database. 2020-02-21 23:21:49