W. Barclay Shoemaker
20181001
Daily Reference (RET) and Potential (PET) Evapotranspiration data over Florida, 2017
ASCII text
Daily Reference (RET) and Potential (PET) Evapotranspiration data over Florida, 1985 to 2017
Internet
Internet
USGS
https://doi.org/10.5066/P9ZHN5Y5
https://fl.water.usgs.gov/et/
John Mecikalski
David Sumner
Jennifer Jacobs
Chandra Pathak
Simon Paech
Ellen Douglas
2008
Use of Visible Geostationary Operational Meteorological Satellite Imagery in Mapping Reference and Potential Evapotranspiration over Florida.
ASCII text
Intech Open Science
Intech Open Science
http://www.intechopen.com/books/evapotranspiration/use-of-visible-geostationary-operational-meteorological-satellite-imagery-in-mapping-reference-and-p
Potential evapotranspiration (PET), and reference evapotranspiration (RET) are estimated at an approximately 2-kilometer spatial grid and daily time-scale from January 1, 2017 to December 31, 2017 for the entire State of Florida and associated counties. Potential and reference evapotranspiration were computed on the basis of albedo, solar radiation, and meteorological data observed at weather stations. Solar radiation data obtained from Geostationary Operational Environmental Satellites (GOES) were used to estimate daily PET/RET at grid points. Albedo at grid points was computed on the basis of observations from the Moderate Resolution Imaging Spectrometer (MODIS) satellite averaged for the period 2011–15. Meteorological data for 2017 was interpolated to grid points using a radial basis function. All datasets are transferred to the U.S Geological Survey (USGS) National Web Server System (NatWeb) and are publicly available at the following URL http://fl.water.usgs.gov/et.
In Florida, potential (PET) and reference (RET) evapotranspiration are required for many community planning activities such as water-use permitting and regulation, estimating agricultural irrigation demands, scientific evaluations of ecosystem resiliency, and modeling surface and groundwater.
20170101
20171231
ground condition
Annually
State of Florida
-89.033203125036
-75.322265625584
32.805376982074
25.124996479177
none
Evapotranspiration
Potential Evapotranspiration
Reference Evapotranspiration
Solar radiation
Water Budget
none
State of Florida
South Florida Water Management District
South West Florida Water Management District
Saint John's River Water Management District
North Florida Water Management District
Suwanne River Water Management District
None
None
W. Barclay Shoemaker
U.S. Geological Survey
mailing and physical
3321 College Ave
Davie
FL
33314
USA
954 377 5956
bshoemak@usgs.gov
South Florida Water Management District, South West Florida Water Management District, Saint John's River Water Management District, North Florida Water Management District, Suwannee River Water Management District, U.S. Geological Survey
John Mecikalski
David Sumner
Jennifer Jacobs
Chandra Pathak
Simon Paech
Ellen Douglas
2011
Use of Visible Geostationary Operational Meteorological Satellite Imagery in Mapping Reference and Potential Evapotranspiration over Florida.
https://www.intechopen.com/books/evapotranspiration/use-of-visible-geostationary-operational-meteorological-satellite-imagery-in-mapping-reference-and-p
Intech Open Science
https://www.intechopen.com/books/evapotranspiration/use-of-visible-geostationary-operational-meteorological-satellite-imagery-in-mapping-reference-and-p
Monica Palaseanu
Leonard Pearlstine,
2008
Estimation of water surface elevations for the Everglades, Florida
Computers and Geosciences, Volume 34, Issue 7, p. 815-826.
Computers and Geosciences
10.1016/j.cageo.2007.08.004
Relative humidity greater than 100 percent was removed. Air temperatures, relative humidity, and wind speed data that were outliers were removed. Albedos for each pixel were average of 5 values from 2011 to 2015 as measured by the MODIS instrument on NASA's Terra satellite (https://modis.ornl.gov/cgi-bin/MODIS/global/subset.pl). Radial basis interpolation was used to assign values for minimum and maximum daily air temperatures, relative humidity, and mean daily wind speed to the PET and RET grid. The radial-basis curvature parameter was set to 0.24, based on guidance from Palaseanu and Pearlstine (2008) and examination of the results for accuracy.
No formal logical accuracy tests were conducted
Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details, such as use of MODIS albedos, and radial basis interpolation.
No formal positional accuracy tests were conducted
No formal positional accuracy tests were conducted
Air temperature, relative humidity and wind speed data from weather stations were interpolated to an approximately 2-km grid spacing into arrays for PET and RET calculations (Mecikalski and others, 2011; https://www.intechopen.com/books/evapotranspiration/use-of-visible-geostationary-operational-meteorological-satellite-imagery-in-mapping-reference-and-p). PET was calculated at grid points using the Priestley-Taylor equation, and RET was calculated at grid points using the FAO Penman method.
20180202
FORTRAN programs (modified from Mecikalski and others, 2011) were run to compute PET and RET.
20180203
PET and RET results were corrected, archived and posted on the internet at: https://fl.water.usgs.gov/et/
20180203
Point
0.001
0.001
Decimal degrees
Date, in year month day (yyyymmdd);
Latitude of Pixel, in decimal degrees;
Longitude of Pixel, in decimal degrees;
Pixel ID number;
Potential evapotranspiration, in millimeters per day;
Reference evapotranspiration, in millimeters per day;
Solar radiation, in MegaJoules per square meter per day;
Daily maximum relative humidity, in percent;
Daily minimum relative humidity, in percent;
Daily maximum air temperature, in degrees Celsius;
Daily minimum air temperature, in degrees Celsius;
Wind speed, in meters per second;
Notes concerning the current data sets:
Missing values are represented by the number -9999.900.
http://fl.water.usgs.gov/et/
http://fl.water.usgs.gov/et/data/2016/index.html
W. Barclay Shoemaker
U.S. Geological Survey
mailing and physical
3321 College Ave
Davie
FL
33314
USA
954 377 5956
bshoemak@usgs.gov
The data have no explicit or implied guarantees
20180731
W. Barclay Shoemaker
U.S. Geological Survey
Research Hydrologist
mailing and physical
3321 College Ave
Davie
FL
33314
US
954 377-5956
bshoemak@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998