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Evapotranspiration over Spatially Extensive Plant Communities in Florida

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: W. Barclay Shoemaker
Publication_Date: 2016
Title:
Evapotranspiration over Spatially Extensive Plant Communities in Florida
Geospatial_Data_Presentation_Form: Maps and Data
Other_Citation_Details:
For associated publication, see Scientific Investigations Report 2011-5212: http://pubs.usgs.gov/sir/2011/5212/
Online_Linkage: https://sofia.usgs.gov/exchange/evapotrans/
Description:
Abstract:
Evapotranspiration (ET) and lake evaporation are quantified in Florida using the eddy covariance and Bowen ratio methods. Ecosystems selected for study include Lake Okeechobee, Pine Uplands, Wet Prairies, Marsh, Cypress Swamp, and Dwarf Cypress. These ecosystems are spatially extensive, and thus, the measurements described herein can be applied to other humid subtropical locations such as the Everglades. Spatial differences in annual ET are considerable due to incoming solar radiation variability and water availability. ET is generally greatest between March to October when solar radiation is relatively large, and least from November to February when solar radiation is small.
Purpose:
To quantify ET and lake evaporation in southern Florida at daily, monthly and annual time scales.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2007
Ending_Date: undefined
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent:
Big Cypress National Preserve, Blue Cypress Marsh, Lake Okeechobee
Bounding_Coordinates:
West_Bounding_Coordinate: -82.37
East_Bounding_Coordinate: -79.82
North_Bounding_Coordinate: 27.80
South_Bounding_Coordinate: 25.00
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: evapotranspiration
Theme_Keyword: surface energy cycle
Theme_Keyword: latent heat flux
Theme_Keyword: net radiation
Theme_Keyword: water budget
Theme_Keyword: eddy covariance
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Environment
Theme_Keyword: Inlandwaters
Theme_Keyword: ClimatologyMeterologyAtmosphere
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Big Cypress National Preserve
Place_Keyword: Lake Okeechobee
Place_Keyword: Blue Cypress Marsh
Place_Keyword: Florida
Access_Constraints: None
Use_Constraints:
Cite primary authors and database when using or publishing these data
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: W. Barclay Shoemaker
Contact_Organization: USGS Caribbean-Florida Water Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 3321 College Avenue
City: Davie
State_or_Province: FL
Postal_Code: 33314
Country: USA
Contact_Voice_Telephone: 954-377-5956
Contact_Electronic_Mail_Address: bshoemaker@usgs.gov
Native_Data_Set_Environment:
Online database. ASCII text files as comma-separated values (csv) or tab-delimited text files via the Download data option.
Cross_Reference:
Citation_Information:
Originator: Bidlake, W.R., Woodham, W.M., and Lopez, M.A.
Publication_Date: 2006
Title:
Evapotranspiration from areas of native vegetation in west-central Florida
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: U.S. Geological Survey Water-Supply
Issue_Identification: Paper 2430
Other_Citation_Details: 35 pp.
Cross_Reference:
Citation_Information:
Originator: Dryer, A.J.
Publication_Date: 1961
Title:
Measurements of evaporation and heat transfer in the lower atmosphere by an automatic eddy covariance technique
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: Quarterly Journal of the Royal Meterological Society
Issue_Identification: 87
Other_Citation_Details: p. 401-412
Cross_Reference:
Citation_Information:
Originator: Tanner, B.D., and Greene, J.P.
Publication_Date: 1989
Title:
Measurement of sensible heat and water vapor fluxes using eddy covariance methods
Geospatial_Data_Presentation_Form: publication
Other_Citation_Details:
Final report prepared for U.S. Army Dugway Proving Grounds, Dugway, Utah, 17 p.
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
See publication for additional information on Attribute Accuracy
Logical_Consistency_Report:
See publication for additional information on Logical Consistency
Completeness_Report: See publication for additional information on Completeness
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
Eddy covariance instrumentation comprises sonic anemometers and krypton hygrometers that measure latent- and sensible-heat fluxes, respectively. Hygrometer voltage is proportional to attenuated radiation emitted from a hygrometer source tube to a hygrometer detector tube. Voltage fluctuations are related to fluctuations in vapor density by Beer-Lambert Law (Weeks and others, 1987). Sonic anemometers detect changes in the transit time of emitted sound waves to infer fluctuations in wind speed in three orthogonal directions, sonic air temperature, and sensible heat.
Methodology:
Methodology_Type: Field
Methodology_Description:
Meteorological instrumentation was installed to measure solar radiation, net radiation, soil-heat flux, vapor-density fluctuations, rainfall, soil-moisture content, air and soil temperatures, relative humidity, distance of water above and below land surface, and mean wind speed and direction and the maximum wind gusts measured during a 30-minute averaging period. Four component net radiometers were installed in April 2008 at the forested ET sites (Pine Upland, Cypress Swamp, and Dwarf Cypress) as part of a separate project with goals of quantifying albedos for satellite-based ET estimates. However, Kipp and Zonen net radiometers were used during quality-assurance quality-control procedures that force energy-budget closure and within Priestly-Taylor ET models for gap filling. Kipp and Zonen net radiometers were available at all five ET sites. Thus, differences in net radiation among the sites cannot be explained by use of different net radiometer brands and manufacturing procedures. Sap-flow data also were collected at the forested ET sites in an effort to estimate transpiration.
Methodology:
Methodology_Type: Field
Methodology_Description:
Sites visits were made every month to download data, perform a sensor inspection and other complete equipment maintenance. All instrumentation was visually inspected, leveled, cleaned, or replaced as necessary. Krypton hygrometer source and detector tube windows were cleaned when necessary with a cotton swab and water to remove dust obstructions and restore the signal strength. Net radiometers were releveled, if necessary. Desiccants were replaced to prevent moisture accumulation within instrumentation enclosures. Depth-to-water measurements were taken with a steel or electric water tape from the top of well casings to the water surface. Depth-to-water measurements were used to develop drift corrections for the pressure transducer readings. Digital photographs of the vegetation community were generally taken during monthly site inspections.
Process_Step:
Process_Description:
The eddy covariance energy-budget method (Dyer, 1961; Tanner and Greene, 1989; Bidlake and others, 1996) was used to measure evapotranspiration (ET) for this study.
Process_Date: 2010
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: BCNP Evapotranspiration Data
Entity_Type_Definition:
Evapotranspiration data and associated parameters for BCNP stations available in tab-delimited or CSV (comma-separated values) text format, which may then be imported into Excel, or most spreadsheet or database programs.
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Time Frame
Attribute_Definition: Date range of data; not all stations have a full range of data
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 20070418
Range_Domain_Maximum: 20101011
Attribute_Units_of_Measure: YYYYMMDD
Attribute:
Attribute_Label: Data Variables
Attribute_Definition: The measured paramater available for download
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Latent Heat (LH)
Enumerated_Domain_Value_Definition: Measured in Watts per meter squared
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Solar Radiation (SR)
Enumerated_Domain_Value_Definition: Measured in Watts per meter squared
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Net Radiation (NR)
Enumerated_Domain_Value_Definition: Measured in Watts per meter squared
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sensible Heat Flux (SHF)
Enumerated_Domain_Value_Definition: Measured in Watts per meter squared
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Relative Humidity (RH)
Enumerated_Domain_Value_Definition: Percentage
Enumerated_Domain_Value_Definition_Source: U.S. Geologial Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Air Temperature (AT)
Enumerated_Domain_Value_Definition: Degrees Celcius
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Water Distance Above (+) or Below (-) Land Surface (WD)
Enumerated_Domain_Value_Definition: Meters
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Evapotranspiration (ET)
Enumerated_Domain_Value_Definition: Millimeters per day
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Stations
Attribute_Definition: Station names where data was collected
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cypress Swamp
Enumerated_Domain_Value_Definition:
Cypress Swamp station located at 25° 45' 10" North, 81° 06' 01" West. Vegetation and substrate: Tall cypress strand. Date range available: 2007-04-25 to 2010-04-24. Data variables available: LH, SR, NR, SHF, RH, AT, Dbl, ET
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Dwarf Cypress
Enumerated_Domain_Value_Definition:
Dward Cypress station located at 25° 45' 45" North, 80° 54' 27" West. Vegatation and substrate: Dwarf cypress and sawgrass (herbaceaous vegetation).. Date range available: 2007-04-18 to 2010-04-10. Data variables available: LH, SR, NR, SHF, RH, AT, Dbl, ET
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Marsh
Enumerated_Domain_Value_Definition:
Marsh station located at 26° 11' 57" North, 81° 15' 58" West. Vegetation and substrate: Deep-water marsh with tall (about 1-2 meters) sawgrass (herbaceous vegetation).Date range available: 2007-06-17 to 2010-04-20. Data variables available: LH, SR, NR, SHR, RH, AT, Dbl, ET
Enumerated_Domain_Value_Definition_Source: U.S. Geoogical Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pine Upland
Enumerated_Domain_Value_Definition:
Pine Upland station located at 25° 59' 59" North, 80° 55' 29" West.. Vegetation and substrate: Pine upland and cypress domes. Date range available: 2007-04-23 to 2010-04-16. Data variables available: LH, SR, NR, SHR, RH, AT, Dbl, ET
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Wet Prairie
Enumerated_Domain_Value_Definition:
Wet Prairie station located at 25° 44' 41" North, 80° 56' 24" West. Date range available: 2007-10-10 to 2010-10-11. Data variables available: LH, SR, NR, SHF, RH, AT, Dbl, ET
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Lake Okeechobee
Enumerated_Domain_Value_Definition:
LZ40 station station located at 26° 54' 06" North, 80° 47' 21" West. Date range available: 2012-11-15 to 2014-12-31. Data variables available: LH, SR, NR, SHF, RH, AT, Dbl, ET
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Blue Cypress Marsh
Enumerated_Domain_Value_Definition:
Blue Cypress Marsh station located at 26° 54' 06" North, 80° 47' 21" West. Date range available: 2009-12-11 to 2014-10-20. Data variables available: LH, SR, NR, SHF, RH, AT, Dbl, ET
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Heather S. Henkel
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727-502-8028
Contact_Facsimile_Telephone: 727-502-8182
Contact_Electronic_Mail_Address: hhenkel@usgs.gov
Resource_Description: BCNP Evapotranspiration Data database
Distribution_Liability: The data have no explicit or implied guarantees
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
Format_Version_Number: see Format Specification
Format_Specification: comma-separated values (.csv) or tab-delimited text files
Format_Information_Content: Data for the stations with selectable variables
File_Decompression_Technique:
The downloaded file with the specified parameters is zipped and must be unzipped before use.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Access_Instructions:
The BCNP Evapotranspiration Data database may be downloaded from the SOFIA website.
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20161015
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Heather S. Henkel
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727-502-8028
Contact_Facsimile_Telephone: 727-502-8182
Contact_Electronic_Mail_Address: sofia-metadata@usgs.gov
Metadata_Standard_Name:
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001.1-1999
Metadata_Access_Constraints:
This metadata record may have been copied from the SOFIA website and may not be the most recent version. Please check https://sofia.usgs.gov/metadata to be sure you have the most recent version.

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Last updated: 23 December, 2016 @ 01:48 PM (KP)