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https://ir.library.oregonstate.edu/concern/articles/9019s4348

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  • A semi-parametric PAR diffuse radiation model was developed using commonly measured climatic variables from 108 site-years of data from 17 AmeriFlux sites. The model has a logistic form and improves upon previous efforts using a larger data set and physically viable climate variables as predictors, including relative humidity, clearness index, surface albedo and solar elevation angle. Model performance was evaluated by comparison with a simple cubic polynomial model developed for the PAR spectral range. The logistic model outperformed the polynomial model with an improved coefficient of determination and slope relative to measured data (logistic: R² = 0.76; slope = 0.76; cubic: R² = 0.73; slope = 0.72), making this the most robust PAR-partitioning model for the United States currently available.
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  • description.provenance : Made available in DSpace on 2014-12-18T18:23:28Z (GMT). No. of bitstreams: 3 license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5) SchmidtAndresForestryDevelopmentSemi-Parametric.pdf: 1071192 bytes, checksum: 877701a7517a12f3ed3aa5af7db4ba49 (MD5) SchmidtAndresForestryDevelopmentSemi-Parametric_Supplement.zip: 15045 bytes, checksum: cbac679ab645db0d76194ac76cd9bd82 (MD5) Previous issue date: 2014-10-24
  • description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2014-12-18T18:23:07Z No. of bitstreams: 3 license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5) SchmidtAndresForestryDevelopmentSemi-Parametric.pdf: 1071192 bytes, checksum: 877701a7517a12f3ed3aa5af7db4ba49 (MD5) SchmidtAndresForestryDevelopmentSemi-Parametric_Supplement.zip: 15045 bytes, checksum: cbac679ab645db0d76194ac76cd9bd82 (MD5)
  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2014-12-18T18:23:28Z (GMT) No. of bitstreams: 3 license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5) SchmidtAndresForestryDevelopmentSemi-Parametric.pdf: 1071192 bytes, checksum: 877701a7517a12f3ed3aa5af7db4ba49 (MD5) SchmidtAndresForestryDevelopmentSemi-Parametric_Supplement.zip: 15045 bytes, checksum: cbac679ab645db0d76194ac76cd9bd82 (MD5)