Georgia Coastal Ecosystems LTER Data Set Details

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GCE-LTER Data Set Summary

Accession:

PHY-GCEM-1506a

Research Theme:

Physical Oceanography (Monitoring)

Contributors:

Daniela Di Iorio, Jacob Shalack, Daniel Saucedo, Caroline Reddy, Wade Sheldon, Adam Sapp

Title:

Monthly vertical profiles of salinity, temperature, pressure, oxygen and photosynthetically-available radiation in Sapelo River, Doboy Sound, Duplin River and Altamaha River transect surveys from April 2008 to April 2015

Abstract:

Monthly hydrographic surveys were performed along the Sapelo River, Doboy Sound, Duplin River and Altamaha River from April 2008 to April 2015. Vertical CTD profiles were collected from the surface to bottom during low and high tide phases at fixed stations chosen to coincide with long-term GCE-LTER moorings. Conductivity, temperature, pressure, photosynthetically-available radiation (PAR) and oxygen concentration were measured at 8 Hz using a SeaBird Electronics SBE-37 instrument, and depth, salinity and sigma-t and oxygen saturation were calculated using UNESCO algorithms. Data values collected during the upcast were deleted. This data set was collected as part of the Georgia Coastal Ecosystems LTER monthly hydrographic monitoring program, and will be updated approximately annually to include the latest observations.

DOI:

10.6073/pasta/380ba957dd36d57e1ad9e571f2a798a7

Key Words:

conductivity, Cruise CTD Profiling, density, depth, estuaries, hydrography, Long-term Data, oxygen, photosynthetically active radiation, pressure, salinity, temperature, water column

LTER Core Area:

Inorganic Matter

Research Themes:

GCE2 Q2 - Domain Patterns, GCE3 Area2 - Patterns within the Domain, Physical Oceanography

Study Period:

17-Apr-2008 to 20-Apr-2015

Study Sites:

GCE-SP -- Sapelo River, Georgia, USA
GCE-DB -- Doboy Sound, Georgia, USA
GCE-AL -- Altamaha River, Georgia, USA
GCE-DP -- Duplin River, Georgia, USA

» Download Geographic Coverage: Google Earth

Project References:

GCE CTD monitoring surveys, GCE water quality monitoring

Downloads:

Data Table: PHY-GCEM-1506a (Unbinned CTD vertical profile data for data set PHY-GCEM-1506a, 130324 records)

Access: Public (released 22-Jun-2015)

Metadata: Text (ESA FLED), XML (Ecological Metadata Language)

Data Formats: Spreadsheet (CSV) [30481.73kb], Text File [25757.09kb], MATLAB (GCE Toolbox) [83545.98kb], MATLAB (Variables) [79765.20kb], Text Report [26791.43kb]

Column List:(display)

Column	Name	Units	Type	Description
1	Cruise	none	string	GCE-LTER research cruise identifier (LTER[MM][YY])
2	Station	none	string	GCE-LTER sampling station
3	Date	yyyy-mm-dd HH:MM:SS - GMT	string	Date of observation (GMT)
4	Year	YYYY	integer	Calendar year
5	Month	MM	integer	Calendar month
6	Day	DD	integer	Calendar day
7	Hour	hours	floating-point	Fractional hours GMT
8	Latitude	degrees	floating-point	Geographic latitude in decimal degrees
9	Longitude	degrees	floating-point	Geographic longitude in decimal degrees
10	Transect	none	string	GCE cruise transect
11	Tide	none	string	Nominal tide stage based on predicted tidal harmonics and shipboard observation
12	SeaState	none	string	Qualitative sea state code at the time of observation
13	Depth_Total	m	floating-point	Water column depth measured by shipboard SONAR
14	Flag_Depth_Total	none	string	QA/QC flags for Water column depth measured by shipboard SONAR (flagging criteria, where "x" is Depth_Total: x<0="I", x>30="Q")
15	SurveyName	none	string	Name of the survey
16	Survey	none	integer	Nominal survey
17	Cast	none	integer	CTD cast number
18	CastFile	none	string	CTD cast filename
19	Scan_Number	none	integer	Scan record number for the CTD cast
20	Pressure	dbar	floating-point	Water pressure
21	Flag_Pressure	none	string	QA/QC flags for Water pressure (flagging criteria, where "x" is Pressure: x<0="I", x>50="Q", manual)
22	Depth	m	floating-point	Water depth at pressure sensor (based on saltware pressure conversion)
23	Flag_Depth	none	string	QA/QC flags for Water depth at pressure sensor (based on saltware pressure conversion) (flagging criteria, where "x" is Depth: x<0="I", x>50="Q", flag_ctd_soak_period(Depth, 12)="X", manual)
24	Temperature	°C	floating-point	Water temperature (ITS-90)
25	Flag_Temperature	none	string	QA/QC flags for Water temperature (ITS-90) (flagging criteria, where "x" is Temperature: Depth<0="I", x<-2="I", x<10="Q", x>35="Q", manual)
26	Conductivity	S/m	floating-point	Conductivity
27	Flag_Conductivity	none	string	QA/QC flags for Conductivity (flagging criteria, where "x" is Conductivity: Depth<0="I", manual)
28	Salinity	PSU	floating-point	Salinity
29	Flag_Salinity	none	string	QA/QC flags for Salinity (flagging criteria, where "x" is Salinity: Depth<0="I", x<0="I", x>36.5="Q", manual)
30	Density	kg/m^3	floating-point	Water density
31	Flag_Density	none	string	QA/QC flags for Water density (flagging criteria, where "x" is Density: Depth<0="I", x<995="Q", x>1028="Q", manual)
32	Sigma_t	kg/m^3	floating-point	Sigma-t (i.e. (Water Density-1)*1000)
33	Flag_Sigma_t	none	string	QA/QC flags for Sigma-t (i.e. (Water Density-1)*1000) (flagging criteria, where "x" is Sigma_t: Depth<0="I", x<-5="Q", x>28="Q", manual)
34	PAR_Depth	m	floating-point	Water depth at PAR sensor, based on the offset between the PAR sensor and pressure sensor
35	Flag_PAR_Depth	none	string	QA/QC flags for Water depth at PAR sensor, based on the offset between the PAR sensor and pressure sensor (flagging criteria, where "x" is PAR_Depth: x<0="I", x>50="Q", manual)
36	PAR	µEinsteins/m^2	floating-point	Photosynthetically available radiation
37	Flag_PAR	none	string	QA/QC flags for Photosynthetically available radiation (flagging criteria, where "x" is PAR: PAR_Depth<0="I", x<0="I", x>2000="Q", manual)
38	Oxygen	mg/L	floating-point	Dissolved oxygen concentration
39	Flag_Oxygen	none	string	QA/QC flags for Dissolved oxygen concentration (flagging criteria, where "x" is Oxygen: Depth<0="I", x<0="I", x<2="Q", x>16="Q", flag_o2saturation(x, Temperature, Salinity, 130, 30, "mg/L")="Q", manual)
40	Oxygen_Sat	%	floating-point	Percent dissolved oxygen saturation
41	Flag_Oxygen_Sat	none	string	QA/QC flags for Percent dissolved oxygen saturation (flagging criteria, where "x" is Oxygen_Sat: Depth<0="I", x<0="I", x<40="Q", x>125="Q", manual)

Data Table: PHY-GCEM-1506a_Binned (Bin-averaged CTD vertical profile data for data set PHY-GCEM-1506a, 42923 records)

Access: Public (released 22-Jun-2015)

Metadata: Text (ESA FLED), XML (Ecological Metadata Language)

Data Formats: Spreadsheet (CSV) [6862.10kb], Text File [5886.63kb], MATLAB (GCE Toolbox) [24852.63kb], MATLAB (Variables) [24399.46kb], Text Report [6353.79kb]

Column List:(display)

Column	Name	Units	Type	Description
1	Cruise	none	string	GCE-LTER research cruise identifier (LTER[MM][YY])
2	Station	none	string	GCE-LTER sampling station
3	Year	YYYY	integer	Calendar year
4	Month	MM	integer	Calendar month
5	Day	DD	integer	Calendar day
6	Longitude	degrees	floating-point	Geographic longitude in decimal degrees
7	Hour	hours	floating-point	Mean Fractional hours GMT calculated by bin-averaging measured values from 0.75m to 6.875m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins
8	Flag_Hour	none	string	QA/QC flags for Mean Fractional hours GMT calculated by bin-averaging measured values from 0.75m to 6.875m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins (flagging criteria, where "x" is Hour: Num_Missing>1="Q")
9	Latitude	degrees	floating-point	Geographic latitude in decimal degrees
10	Transect	none	string	GCE cruise transect
11	Tide	none	string	Nominal tide stage based on predicted tidal harmonics and shipboard observation
12	SeaState	none	string	Qualitative sea state code at the time of observation
13	Depth_Total	m	floating-point	Water column depth measured by shipboard SONAR
14	Flag_Depth_Total	none	string	QA/QC flags for Water column depth measured by shipboard SONAR (flagging criteria, where "x" is Depth_Total: )
15	SurveyName	none	string	Name of the survey
16	Survey	none	integer	Nominal survey
17	Cast	none	integer	CTD cast number
18	CastFile	none	string	CTD cast filename
19	Depth	m	floating-point	Middle value of Depth bin
20	Num_Averaged	count	integer	Number of valid observations per bin included in the average, based on Salinity values
21	Flag_Num_Averaged	none	string	QA/QC flags for Number of valid observations per bin included in the average, based on Salinity values (flagging criteria, where "x" is Num_Averaged: )
22	Num_Missing	count	integer	Number of missing observations per bin, based on Salinity values
23	Flag_Num_Missing	none	string	QA/QC flags for Number of missing observations per bin, based on Salinity values (flagging criteria, where "x" is Num_Missing: )
24	Temperature	°C	floating-point	Mean Water temperature (ITS-90) calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins
25	Flag_Temperature	none	string	QA/QC flags for Mean Water temperature (ITS-90) calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins (flagging criteria, where "x" is Temperature: Num_Missing>1="Q", manual)
26	Conductivity	S/m	floating-point	Mean Conductivity calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins
27	Flag_Conductivity	none	string	QA/QC flags for Mean Conductivity calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins (flagging criteria, where "x" is Conductivity: Num_Missing>1="Q", manual)
28	Salinity	PSU	floating-point	Mean Salinity calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins
29	Flag_Salinity	none	string	QA/QC flags for Mean Salinity calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins (flagging criteria, where "x" is Salinity: Num_Missing>1="Q", manual)
30	Density	kg/m^3	floating-point	Mean Water density calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins
31	Flag_Density	none	string	QA/QC flags for Mean Water density calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins (flagging criteria, where "x" is Density: Num_Missing>1="Q", manual)
32	Sigma_t	kg/m^3	floating-point	Mean Sigma-t (i.e. (Water Density-1)*1000) calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins
33	Flag_Sigma_t	none	string	QA/QC flags for Mean Sigma-t (i.e. (Water Density-1)*1000) calculated by bin-averaging measured values from 0.625m to 6.625m in intervals of 0.25m, using spline interpolation of the mean depth per bin and mean measured value to center the values within respective bins (flagging criteria, where "x" is Sigma_t: Num_Missing>1="Q", manual)

Statistics:

Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS

Citation:

Di Iorio, Daniela. 2015. Monthly vertical profiles of salinity, temperature, pressure, oxygen and photosynthetically-available radiation in Sapelo River, Doboy Sound, Duplin River and Altamaha River transect surveys from April 2008 to April 2015. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/380ba957dd36d57e1ad9e571f2a798a7

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