Georgia Coastal Ecosystems LTER Data Set Details

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GCE-LTER Data Set Summary

Accession:

MSH-GCET-2402a

Research Theme:

Marsh Ecology (Graduate Thesis Study)

Contributors:

Peter Hawman, David Cotten, Deepak Mishra

Title:

Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from January 2014 to December 2022 for sensor Flux2

Abstract:

Eddy covariance (EC) CO2 fluxes from sensor set "Flux2" from January 2014 to December 2022 collected over a Spartina alterniflora marsh located on the western side of Sapelo Island bounded by the Duplin River and Barn Creek. EC fluxes were processed in EddyPro 7. Additional biophysical variables included are air temperature, relative humidity, vapor pressure deficit, and water table height from a nearby tidal creek and the marsh platform.

DOI:

10.6073/pasta/c65b7eb8d7c46f1ff50a98d032125ebf

Key Words:

air temperature, carbon dioxide, carbon fluxes, Climate Monitoring, Duplin River, eddy covariance, Long-term Data, net primary productivity, photosynthetically active radiation, salt marshes, Sapelo Island, Spartina alterniflora, vapor pressure, water level, wind direction, wind speed

LTER Core Area:

Primary Production

Research Themes:

Marsh Ecology, Meteorology

Study Period:

01-Jan-2014 to 31-Dec-2022

Study Sites:

GCE_Flux -- GCE Flux Tower Marsh, Sapelo Island, Georgia

» Download Geographic Coverage: Google Earth

Research Protocols:

Protocol for calculating sampling error in CO2 flux measurements (Journal of Geophysical Research)

Impact of post-field data processing on eddy covariance flux estimates and energy balance closure (Meteorologische Zeitschrift)

Averaging Detrending and Filtering of Eddy Covariance Time Series (Handbook of Micrometeorology)

A system to measure surface fluxes of momentum, sensible heat, water vapour and carbon dioxide (Journal of Hydrology)

Quality Control and Flux Sampling Problems for Tower and Aircraft Data (Journal of Atmospheric and Oceanic Technology)

Correction of flux measurements for density effects due to heat and water vapour transfer (Quarterly Journal of the Royal Meteorological Society)

Sonic Anemometer Tilt Correction Algorithms (Boundary-Layer Meteorology)

Publications:

Hawman, P., Cotten, D.L. and Mishra, D. 2024. Canopy Heterogeneity and Environmental Variability Drive Annual Budgets of Net Ecosystem Carbon Exchange in a Tidal Marsh. JGR Biogeosciences. (DOI: 10.1029/2023JG007866)

Downloads:

Data Table: MSH-GCET-2402a (Main data table for data set MSH-GCET-2402a, 157786 records)

Access: Public (released 19-Mar-2024)

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

Data Formats: Spreadsheet (CSV) [17777.75kb], Text File [19442.34kb], MATLAB (GCE Toolbox) [12930.80kb], MATLAB (Variables) [12930.28kb], Text Report [20434.29kb]

Column List:(hide)

Column	Name	Units	Type	Description
1	datetime	yyyy-mm-dd HH:MM:SS - GMT	string	Calendar date and time of observation
2	wind_speed	m/s	floating-point	Wind speed, 30 minute mean
3	wind_dir	degrees	floating-point	Wind direction, 30 minute mean
4	ustar	m/s	floating-point	Friction velocity
5	L	meters	floating-point	Monin-Obukhov length
6	Z_L	none	floating-point	Monin-Obukhov stability parameter (z-d)/L
7	v_var	m/s	floating-point	Variance of lateral velocity fluctuations
8	co2_flux	umol/m^2/s	floating-point	Corrected carbon dioxide flux
9	qc_co2_flux	none	integer	Quality flag for gas flux
10	rand_err_co2_flux	umol/m^2/s	floating-point	Random error for carbon dioxide flux
11	co2_strg	umol/m^2/s	floating-point	Estimate of storage carbon dioxide flux
12	Mean_PAR_Incident	umol/m^2/s	floating-point	Photosynthetically active radiation, 30 minute mean
13	Mean_Temp_Air	°C	floating-point	Air temperature, 30 minute mean
14	Mean_Humidity	%	floating-point	Relative humidity, 30 minute mean
15	VPD	kPa	floating-point	Vapor pressure deficit, 30 minute mean
16	Mean_Water_Table_Creek	meters	floating-point	Water table level in creek, 30 minute mean
17	Mean_Water_Table_Marsh	meters	floating-point	Water table level on marsh, 30 minute mean

Statistics:

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

Citation:

Hawman, Peter. 2024. Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from January 2014 to December 2022 for sensor Flux2. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/c65b7eb8d7c46f1ff50a98d032125ebf

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