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Evapotranspiration and Rainfall Data for EDEN Gages

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Frequently-anticipated questions:


What does this data set describe?

Title: Evapotranspiration and Rainfall Data for EDEN Gages
Abstract:
The current scope of work will continue operation and maintenance of 25 gaging stations and will implement the hydrologic tools to support biological and ecological assessments of the impacts of the restoration plan for the greater Everglades.

Evapotranspiration and rainfall data are available for 253 sites in Big Cypress National Preserve, Everglades National Park, Florida Bay, Gulf of Mexico, Pennsuco Wetlands, and Water Conservation Areas 1, 2, and 3. The data are available as zipped files by area and in sets of data from 1995-2009 for Evapotranspiration data and from 2002 - 2010 for rainfall data.

  1. How should this data set be cited?

    Holmes, Mike, 2010, Evapotranspiration and Rainfall Data for EDEN Gages.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -81.35
    East_Bounding_Coordinate: -80.16
    North_Bounding_Coordinate: 26.75
    South_Bounding_Coordinate: 25.16

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 1995
    Ending_Date: Present
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: spreadsheets

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect_Spatial_Reference: Everglades Depth Estimation Network (EDEN)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.1. Longitudes are given to the nearest 0.1. Latitude and longitude values are specified in Degrees, minutes, and decimal seconds.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257.

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview: ET and rainfall data are given by date for each site location
    Entity_and_Attribute_Detail_Citation: USGS, SFWMD


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

    • Mike Holmes

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Bryan McCloskey
    U.S. Geological Survey
    600 4th Street South
    St. Petersburg, FL 33701
    USA

    727 803-8747 x3017 (voice)
    727 803-2030 (FAX)
    bmccloskey@usgs.gov


Why was the data set created?

Water-level gages provide information for EDEN interpolations of daily water stage that provide spatially-explicit hydrologic predictions necessary for modeling floral and faunal habitat suitability and distributions across the entire Everglades. These models are critical for evaluations of alternative Everglades restoration plans and monitoring of the habitat impacts of surface hydrologic dynamics.


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 2007 (process 1 of 5)
    In FY07, the surface model was enhanced and an analysis of confidence identified several problem areas along boundaries. The daily model surfaces will be posted to the EDENweb in October with metadata and full documentation. The process of computing new daily maps will begin on a quarterly basis beginning in FY08

    Date: 2008 (process 2 of 5)
    Provide ET data for the greater Everglades

    Using ET data compiled from various sources (ie. USGS and WMD) and based on meetings with agencies and principal investigators (PIs) in FY07, determine preferred method(s) for estimating ET at EDEN gages and through the greater Everglades for the period January 1995 to current. Provide estimates of ET data by gage and by area (ie. WCA1, ENP), if appropriate, on a daily or seasonal basis (frequency based on analysis of available data and agency and PI needs). Make recommendation for format and presentation on EDENweb and work with the SOFIA webmaster to post data.

    Date: 2008 (process 3 of 5)
    Provide rainfall data for greater Everglades

    Using NEXRAD rainfall grids provided by SFWMD extrapolate time-series point data at EDEN gages and through the greater Everglades for the period January 2002 to current. Provide estimates of rainfall data by gage and by area (ie. WCA1, ENP), if appropriate, on a daily or seasonal basis (frequency based on analysis of available data and agency and PI needs). Make recommendation for format and presentation on EDENweb and work with the SOFIA webmaster to post data

    Person who carried out this activity:

    Bryan McCloskey
    U.S. Geological Survey
    600 4th Street South
    St. Petersburg, FL 33701
    USA

    727 803-8747 x3017 (voice)
    727 803-2030 (FAX)
    bmccloskey@usgs.gov

    Date: 2008 (process 4 of 5)
    Program USGS NWIS database to plot gage hydrographs with rainfall and ET

    Program NWIS to allow plotting of hydrographs for multiple gages in NWIS or outside of NWIS using NWIS data (daily and hourly values). Hydrograph comparison offer users many advantages when evaluating the Everglades wetlands system

    Person who carried out this activity:

    Bryan McCloskey
    U.S. Geological Survey
    600 4th Street South
    St. Petersburg, FL 33701
    USA

    727 803-8747 x3017 (voice)
    727 803-2030 (FAX)
    bmccloskey@usgs.gov

    Date: 2010 (process 5 of 5)
    The rainfall and evapotranspriation data have been reprocessed. All stations now have data for both data sets going back to the beginning of each data set.

    Person who carried out this activity:

    Bryan McCloskey
    U.S. Geological Survey
    600 4th Street South
    St. Petersburg, FL 33701
    USA

    727 803-8747 x3017 (voice)
    727 803-2030 (FAX)
    bmccloskey@usgs.gov

  3. What similar or related data should the user be aware of?

    Gray, J. R. Glysson, G. D.; Turcios, L., 2000, Comparability of suspended-sediment concentration and total suspended solids data: USGS Water-Resources Investigations Report 00-4191, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: accessed as of 11/9/2009
    Jones, John W. Price, Susan D., 2007, Conceptual design of the Everglades Depth Estimation Network (EDEN) grid: USGS Open-File Report 2007-1200, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: accessed as of 12/29/2009
    Pearlstine, Leonard Higer, Aaron; Palaseanu, Monica, 2007, Spatially Continuous Interpolation of Water Stage and Water Depths Using the Everglades Depth Estimation Network (EDEN): CIR 1521, Institute of Food and Agricultural Services, University of Florida, Gainesville, Fl.

    Online Links:

    Other_Citation_Details:
    accessed as of 12/29/2009

    Full text of the document is available at: <http://edis.ifas.ufl.edu/pdffiles/UW/UW27800.pdf>

    Conrads, Paul A. Roehl, Edwin A., Jr., 2007, Hydrologic Record Extension of Water-Level Data in the Everglades Depth Estimation Network (EDEN) Using Artificial Neural Network Models 2000-2006: USGS Open-File Report 2007-1350, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: accessed as of 6/7/2010
    Conrads, P. A. Roehl, E. A., Jr., 200609, Estimating Water Depths Using Artificial Neural Networks: Hydroinformatics 2006 v. 3, 7th International Conference on Hydroinformatics, HIC 2006, Nice, France.

    Online Links:

    Other_Citation_Details:
    accessed as of 12/29/2009

    This paper was presented at the 7th International Conference on Hydroinformatics, Nice, France, 04-08 September 2006

    publication edited by P. Goubesville, J. Cunge, V. Guinot, and S. Y. Liong

    Brandes, E. A., 1975, Optimizing Rainfall Estimates with the Aid of Radar: Journal of Applied Meteorology vol. 14, issue 7, p. 1339-1345, American Meteorological Society, Boston, MA.

    Online Links:

    Other_Citation_Details: accessed as of 9/1/2010
    Jones, J. W. Price, S. D., 2007, Initial Everglades Depth Estimation Network (EDEN) digital elevation model research and development: USGS Open-File Report 2007-1034, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: accessed as of 11/9/2009
    Skinner, C. Bloetscher, F.; Pathak, C. S., 200903, Comparison of NEXRAD and Rain Gauge Precipitation Measurements in South Florida: Journal of Hydrologic Engineering v. 14, n. 3, p. 248-260, American Society of Civil Engineering, Reston, VA.

    Online Links:

    Other_Citation_Details:
    Accessed as of 11/9/2009 The abstract may be viewed on the ASCE Research Library website. Access to the full article requires a journal subscritption or article purchase.
    Jacobs, Jennifer Mecikalski, John; Paech, Simon, 2008, Satellite-based solar radiation, net radiation, and potential and reference evapotranspiration estimates over Florida: U.S. Geological Survey, unknown.

    Online Links:

    Other_Citation_Details: accessed as of 12/27/2010


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

    The data are presumed referenced to the North American Datum of 1983 (NAD83)

  3. How accurate are the heights or depths?

    Data for many gages in the EDEN network are referenced to NGVD29 by the operating agencies. When posted to EDENweb, they have been converted to NAVD88 using the conversion value documented on the station information page. Some gages operated by the USGS have not yet been converted to NAVD88.

    Users should take careful note of the referenced vertical datum in order to make valid data comparisons.

  4. Where are the gaps in the data? What is missing?

    The end-of-month (EOM) files use additional 81 rain gage data not available real-time with a proprietary algorithm to adjust radar rainfall values. Rainfall data are available from 2002 - 9/30/2010.

    ET data are available from 1995 -12/31/2009.

  5. How consistent are the relationships among the observations, including topology?

    Rainfall data were compiled for all the Eden gage locations from the 15-minute NEXRAD data provided by the SFWMD. The precision for the gage-adjusted radar is considered to be the same as standard rain-gage precision which is typically reported to the nearest 1/100th of an inch. Because the radar is adjusted to agree with the rain gage, the precision for the rain gage used is the governing precision at 1/100th inch (written communication, Baxter Vieux). Daily gage-adjusted rainfall values were computed for the South Florida Water Management District by OneRain, Inc (www.onerain.com) from January 2002 to October 2007. Starting November 1, 2007, these data are provided by Vieux. Inc (www.vieuxinc.com/rainvieux.html).

    Within approximately 45 days after the end of each month quality-assured EOM data for grid cells in the EDEN project domain for the month are received from SFWMD. Daily rainfall data (in inches) for EDEN gage locations are compiled from the EOM data and assembled into Excel spreadsheets by area. This compilation of data is updated when additional data is provided by the SFWMD.

    EDEN staff receives Evapotranspiration (ET) data annually from the USGS approximately six months after the end of the calendar year. Daily Potential Evapotranspiration (PET) values (in millimeters) are extrapolated by location for each of the EDEN water level stations and assembled into Excel spreadsheets organized by area.

    Any use of trade, product, or firm names is for descriptive purposes only and does not constitute endorsement by the U.S. Government


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: none
Use_Constraints: none

  1. Who distributes the data set? (Distributor 1 of 2)

    Heather S. Henkel
    U.S. Geological Survey
    600 Fourth St. South
    St. Petersburg, FL 33701
    USA

    727 803-8747 ext 3028 (voice)
    727 803-2030 (FAX)
    hhenkel@usgs.gov

  2. What's the catalog number I need to order this data set?

    Rainfall data

  3. What legal disclaimers am I supposed to read?

    The data have no implied or explicit guarantee

  4. How can I download or order the data?

    • Availability in digital form:

      Data format: The files contain the rainfall data for 2002-2010 for sites in Big Cypress National Preserve, Everglades National Park East and West, Florida Bay, Gulf of Mexico, Pennsuco Wetlands, Water Conservation Areas 1, 2, or 3. in format MS Excel Size: 0.138
      Network links: <https://sofia.usgs.gov/eden/nexrad.php>

    • Cost to order the data: none


  1. Who distributes the data set? (Distributor 2 of 2)

    Heather S. Henkel
    U.S. Geological Survey
    600 Fourth St. South
    St. Petersburg, FL 33701
    USA

    727 803-8747 ext 3028 (voice)
    727 803-2030 (FAX)
    hhenkel@usgs.gov

  2. What's the catalog number I need to order this data set?

    Evapotranspiration Data

  3. What legal disclaimers am I supposed to read?

    No warrantees are implied or explicit for the data

  4. How can I download or order the data?

    • Availability in digital form:

      Data format: The files contain the Evapotranspiration data for 1995-2004, 2008-2008, and 2009 for sites in Big Cypress National Preserve, Everglades National Park East and West, Florida Bay, Gulf of Mexico, Pennsuco Wetlands, Water Conservation Areas 1, 2, or 3. in format MS Excel (version 1997-2003) Size: 1.4
      Network links: <https://sofia.usgs.gov/eden/evapotrans.php>

    • Cost to order the data: none


Who wrote the metadata?

Dates:
Last modified: 27-Dec-2010
Metadata author:
Heather Henkel
U.S. Geological Survey
600 Fourth Street South
St. Petersburg, FL 33701
USA

727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
sofia-metadata@usgs.gov

Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


This page is <https://sofia.usgs.gov/metadata/sflwww/eden_et_rainfall_data.faq.html>

U.S. Department of the Interior, U.S. Geological Survey
Comments and suggestions? Contact: Heather Henkel - Webmaster
Generated by mp version 2.8.18 on Mon Dec 27 11:18:35 2010