Dataset title: Flux measurements from the SRS-6 Tower, Shark River Slough, Everglades National Park, South Florida (FCE) from January 2004 to August 2005 Dataset ID: ST_PP_Barr_006 Research type: Short-term Dataset Creator Name: Dr. Jordan Barr Position: Data manager Organization: Florida Coastal Everglades LTER Program Address: South Florida Natural Resource Center Everglades National Park Homestead, FL 33030 USA Phone: 305-224-4254 Email: jordan_barr@nps.gov URL: http://www.nps.gov/ever/naturescience/sfnrcstaff.htm Name: Dr. Jose Fuentes Position: Project PI Organization: Florida Coastal Everglades LTER Program Address: The Pennsylvania State University Department of Meteorology University Park, PA 16802 USA Phone: 814-863-1585 Email: jdfuentes@psu.edu URL: http://micromet.psu.edu Name: Dr. Joseph Zieman Position: Project Collaborator Organization: Florida Coastal Everglades LTER Program Address: Department of Environmental Sciences Clark Hall University of Virginia Charlottesville, VA 22903 USA Phone: 434-924-0570 Fax: 434-924-7761 Email: jcz@virginia.edu URL: http://www.evsc.virginia.edu/ Metadata Provider Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street, OE 148 Miami, FL 33199 USA Phone: 305-348-6054 Email: fcelter@fiu.edu URL: https://fcelter.fiu.edu Dataset Abstract Above canopy measurements of carbon dioxide fluxes and sensible and latent heating were obtained with an open path eddy covariance system positioned on the tower at 26-m. Additionally, measurements of solar irradiance, wind speed, air temperature and humidity were made every half hour. Geographic Coverage Study Extent Description The Study Extent of this dataset includes the SRS6 research site, Shark River Slough, Everglades National Park, South Florida Bounding Coordinates Geographic description: Data were collected at the SRS6 Tower, Shark River Slough, Everglades National Park, South Florida West bounding coordinate: -81.078 East bounding coordinate: -81.078 North bounding coordinate: 25.365 South bounding coordinate: 25.365 FCE LTER Sites: SRS6 Temporal Coverage Start Date: 2004-01-01 End Date: 2005-08-31 Data Table Entity Name: ST_PP_Barr_006 Entity Description: Flux measurements from the SRS-6 Tower, Shark River Slough, Everglades National Park, South Florida (FCE) Object Name: ST_PP_Barr_006.csv Data Format Number of Header Lines: 1 Attribute Orientation: column Field Delimiter: , Number of Records: Attributes Attribute Name: Date Attribute Label: Date Attribute Definition: Collection date Storage Type: datetime Measurement Scale: Missing Value Code: Attribute Name: Time Attribute Label: Time Attribute Definition: Collection time Storage Type: ordinal Measurement Scale: Units decimalHour Precision:0.10 Number Type: real Missing Value Code: Attribute Name: Sensible_Heat_Flux Attribute Label: flux Attribute Definition: Sensible Heat Flux collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Latent_Heat _Flux Attribute Label: flux Attribute Definition: Latent Heat Flux collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: CO2_Flux Attribute Label: flux Attribute Definition: CO2 Flux collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: microMolesPerMetersSquaredPerSecond Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Friction_Velocity Attribute Label: velocity Attribute Definition: Friction_Velocity collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: metersPerSecond Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: Ws Attribute Label: speed Attribute Definition: Wind Speed collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: metersPerSecond Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: Wdir Attribute Label: direction Attribute Definition: Wind Direction collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: degree Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: AirTemp_1 Attribute Label: temperature Attribute Definition: Air Temperature collected at 1.52 meters above ground surface Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: AirTemp_2 Attribute Label: temperature Attribute Definition: Air Temperature at at 10.67 meters above ground surface Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: AirTemp_3 Attribute Label: temperature Attribute Definition: Air Temperature collected at 15.24 meters above ground surface Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: AirTemp_4 Attribute Label: temperature Attribute Definition: Air Temperature collected at 19.81 meters above ground surface Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: AirTemp_5 Attribute Label: temperature Attribute Definition: Air Temperature collected at 26.52 meters above ground surface Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: AirTemp Attribute Label: temperature Attribute Definition: Air Temperature collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: RH Attribute Label: relative humidity Attribute Definition: Relative Humidity collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: percent Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: SH Attribute Label: specific humidity Attribute Definition: Specific Humidity collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: gramsPerKilogram Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Soil_Heat_Flux Attribute Label: flux Attribute Definition: Soil Heat Flux collected at -0.05 meters (below ground surface) Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: SoilTemp_1 Attribute Label: temperature Attribute Definition: Soil Temperature collected at -0.02 meters (below ground surface) Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: SoilTemp_2 Attribute Label: temperature Attribute Definition: Soil Temperature collected at -0.05 meters (below ground surface) Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: SoilTemp_3 Attribute Label: temperature Attribute Definition: Soil Temperature collected at -0.10 meters (below ground surface) Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: SoilTemp_4 Attribute Label: temperature Attribute Definition: Soil Temperature collected at -0.20 meters (below ground surface) Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: Solar_Irradiance_Incident Attribute Label: irradiance Attribute Definition: Solar Irradiance Incident collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Solar_Irradiance_Reflected Attribute Label: irradiance Attribute Definition: Solar Irradiance Reflected collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Lin Attribute Label: irradiance Attribute Definition: incoming longwave collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Lout Attribute Label: irradiance Attribute Definition: outgoing longwave collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Tcav Attribute Label: temperature Attribute Definition: panel temperature collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: celsius Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: Net_Irradiance Attribute Label: irradiance Attribute Definition: Net Irradiance collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: wattsPerMeterSquared Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Photosyn_Active_Irradiance_Incident Attribute Label: irradiance Attribute Definition: Photosynthetically Active Irradiance Incident collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: microMolesPerMetersSquaredPerSecond Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Photosyn_Active_Irradiance_Reflected Attribute Label: irradiance Attribute Definition: Photosynthetically Active Irradiance Reflected collected at 27 meters above ground surface Storage Type: data Measurement Scale: Units: microMolesPerMetersSquaredPerSecond Precision: 0.10 Number Type: real Missing Value Code: -9999.0 (Value will never be recorded) Attribute Name: Stage Attribute Label: height Attribute Definition: stage Storage Type: data Measurement Scale: Units meter Precision:0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: Salinity Attribute Label: mixing ratio Attribute Definition: salinity Storage Type: data Measurement Scale: Units: PSU Precision: 0.01 Number Type: real Missing Value Code: -9999.00 (Value will never be recorded) Attribute Name: DecimalDay Attribute Label: date Attribute Definition: decimal day, starting 1 Jan 2004 Storage Type: calculation Measurement Scale: Units serialDateNumberYear0000 Precision:0.00 Number Type: real Missing Value Code: -9999.0000 (Value will never be recorded) Methods Sampling Description Fluxes are determined as half hour averages of 10 Hz covariance measurements of vertical wind speed and the scalar of interest (e.g. CO2). Method Step Description The eddy covariance method (Dennis Baldocchi at Cal Berkeley) References: Baldocchi, D. D. 2003-06-25. Assessing the eddy covariance technique for evaluating carbon dioxide exchange rates of ecosystems: past, present and future. Global Change Biology, 9: 479-492. Instrumentation Flux tower and a listing of additional instrumentation can be found at http://www.people.virginia.edu/%7Ejf6s/pace/VFRFInstruments.html. Quality Control Dataset is inspected by PI for QA/QC; standard validation checks for negative numbers, graphs to detect potential outliers . Maintenance knb-lter-fce.1151.3: Updated metadata to EML 2.2.0, added creator ORCID and organization ROR ids, updated project information and added award information, added .csv extension to data file name (no changes to data) Dataset Contact Name: Jordan Barr Position: Scientist, data manager Organization: Everglades National Park Address: South Florida Natural Resource Center Everglades National Park 3rd Floor, 950 N Krome Ave Homestead, FL 33030 USA Phone: 305-224-4254 Email: jordan_barr@nps.gov URL: http://www.nps.gov/ever/naturescience/sfnrcstaff.htm Position: Information Manager Organization: Florida Coastal Everglades LTER Address: Florida International University 11200 SW 8th Street, OE 148 Miami, FL 33199 USA Email: fcelter@fiu.edu URL: https://fcelter.fiu.edu Dataset Submission Date 2009-02-26 Data Submission Notes PLEASE NOTE: THIS FILE WILL REPLACE ST_PP_BARR_006 AND ST_PP_BARR_006.V1 and ST_PP_BARR_006.V2. 1. All quantities are half hour averages, and the time provided is the starting period. So, for time = 0, data is averaged from 0:00 to 0:30 hours. 2. During some periods, rain events produce invalid fluxes (for sensible and latent heat and CO2 flux). I replaced these values with zeros whenever possible. 3. Sometimes the air temperature measurement at 35 feet produces some spikes. I have not changed or eliminated these values because I usually take care of that in post-processing programs. 4. The quantum sensor that provides incoming photosynthetically active irradiance is often shaded sometime during the day because my boom on the tower is too short. I recommend just using solar irradiance to estimate this quantity. However, incoming photosynthetically active irradiance could still be useful if the data is properly filtered (but it would be a pain). 5. As you can imagine, it is not easy to really clean up this data set. I would just encourage someone using the data to take a close look at the diurnal profiles of any variable before proceeding. Information Management Notes This is a short-term primary production dataset. This dataset replaces all previous versions of ST_PP_Barr_006, ST_PP_Barr_006.v1 and ST_PP_Barr_006.v2. The FCE program is discontinuing its practice of versioning data as of March 2013.