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Activity Number:
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274
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Type:
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Contributed
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Date/Time:
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Tuesday, August 4, 2009 : 8:30 AM to 10:20 AM
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Sponsor:
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Section on Statistics and the Environment
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| Abstract - #304031 |
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Title:
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Development of a Soil Moisture Sampling Scheme Based on Scale and Validation Problems
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Author(s):
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Lisa Bramer*+ and Petrutza Caragea
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Companies:
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Iowa State University and Iowa State University
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Address:
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Snedecor Hall, Ames, IA, 50011-1210,
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Keywords:
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spatial sampling scheme ; soil moisture ; multiple measurement scale
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Abstract:
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Quantifying soil moisture is of fundamental importance to weather and precipitation forecasting, irrigation scheduling, and many other agronomical applications. Even though instruments that take soil moisture measurements over large areas are cost and time efficient, the accuracy and validity of these measurements are relatively unknown. Often, point measurements are taken to capture the mean soil moisture for the large area of interest. The task of validating large area measurements is problematic for researchers in terms of efficiency and procedure. This work discusses a finer resolution sampling scheme which maintains an acceptable prediction mean squared error (over various moisture conditions), while keeping the number of locations as small as possible.
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