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Record Search Query: ServiceParameters>MODELS

Soil - Plant - Atmosphere - Water (SPAW) Hydrologic Budget Model
Entry ID: USDA_ARS_SPAW
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Summary
Abstract: The Soil - Plant - Atmosphere - Water (SPAW) Hydrologic Budget Model is a daily hydrologic budget model for agricultural fields and ponds (wetlands, lagoons, ponds and reservoirs). Included are irrigation scheduling and soil nitrogen. Data input and results are graphical screens. SPAW was developed by Dr. Keith Saxton, USDA-ARS (retired). Included in this download is the Soil Water Characteristics Hydraulic Properties Calculator, a graphical program developed by Saxton and Walter Rawls for estimating soil water tension, conductivity and water holding capability based on soil texture, organic matter, gravel content, salinity, and compaction. SPAW and the Soil Water Characteristics Hydraulic Properties Calculator are bundled in a single installation file. The installation program allows the user to choose whether to install SPAW, the calculator, or both.

[Summary provided by the USDA.]

Related URL
Link: GET SERVICE > GET SOFTWARE PACKAGE
Description: Register and Download SPAW.
Service Citation
Originators: Keith E. Saxton
Title: Soil - Plant - Atmosphere - Water (SPAW) Hydrologic Budget Model
Provider: USDA Agricultural Research Service
URL: http://hrsl.arsusda.gov/SPAW/Index.htm
ISO Topic Category
FARMING
BIOTA
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
Access Constraints
User registration is required before downloading.
Use Constraints
The USDA distributes SPAW and Soil Water Characteristics without cost or obligation, only for scientific and analytic hydrologic purposes with no expressed warranties of accuracy or methodology beyond that normally expected of peer reviewed documentation. At the users discretion, the installation program will install either or both applications.
Service Provider
Agricultural Research Service, U. S. Department of Agriculture

Service Provider Personnel
Name: USDA-ARS
Phone: 254-770-6500
Fax: 254-770-6561
Contact Address:
USDA-ARS
Grassland Soil and Water Research Laboratory
808 E. Blackland Rd.
City: Temple
Province or State: TX
Postal Code: 76502
Country: USA
Distribution Media
Distribution_Media: Online
Fees: No fees
Personnel
KEITH E. SAXTON
Role: TECHNICAL CONTACT
Phone: 509-332-7277
Fax: 509-332-7277
Email: ksaxton at roadrunner.com

TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Creation and Review Dates
SERF Creation Date: 2012-04-26
SERF Last Revision Date: 2012-05-01
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Last Updated:  April 2014