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Article: Comparisons of radiative transfer models of vegetation canopies and laboratory measurements

TitleComparisons of radiative transfer models of vegetation canopies and laboratory measurements
Authors
Issue Date1997
Citation
Remote Sensing of Environment, 1997, v. 61, n. 1, p. 129-138 How to Cite?
AbstractLaboratory measurements of the directional reflectance of plant canopies fit radiative-transfer-based plane-parallel models well when the plants are low and leaves are small. Bidirectional reflectance measurements were collected at a unique facility in Changchun, China, using an apparatus that simulates solar radiation at zenith angles up to 45° on a 1-m square target. A curved arm fitted with multiband radiometers revolves on a circular track around the target, allowing rapid measurement of multispectral bidirectional reflectance factors (BRFs) of the target at 10°-zenith and azimuth angles. Because the measurements are made under controlled conditions, effects of such confounding factors as wind and diffuse (sky) irradiance can be avoided. Three one-dimensional radiative-transfer canopy models were compared to the BRF measurements in the near-infrared. The models generally fit the data for a young wheat canopy well. However, young corn and soybean canopies showed significant differences that are attributed to the escape of multiply scattered radiation from the sides of the canopy.
Persistent Identifierhttp://hdl.handle.net/10722/321243
ISSN
2023 Impact Factor: 11.1
2023 SCImago Journal Rankings: 4.310
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiang, Shunlin-
dc.contributor.authorStrahler, Alan H.-
dc.contributor.authorJin, Xifeng-
dc.contributor.authorZhu, Qijang-
dc.date.accessioned2022-11-03T02:17:36Z-
dc.date.available2022-11-03T02:17:36Z-
dc.date.issued1997-
dc.identifier.citationRemote Sensing of Environment, 1997, v. 61, n. 1, p. 129-138-
dc.identifier.issn0034-4257-
dc.identifier.urihttp://hdl.handle.net/10722/321243-
dc.description.abstractLaboratory measurements of the directional reflectance of plant canopies fit radiative-transfer-based plane-parallel models well when the plants are low and leaves are small. Bidirectional reflectance measurements were collected at a unique facility in Changchun, China, using an apparatus that simulates solar radiation at zenith angles up to 45° on a 1-m square target. A curved arm fitted with multiband radiometers revolves on a circular track around the target, allowing rapid measurement of multispectral bidirectional reflectance factors (BRFs) of the target at 10°-zenith and azimuth angles. Because the measurements are made under controlled conditions, effects of such confounding factors as wind and diffuse (sky) irradiance can be avoided. Three one-dimensional radiative-transfer canopy models were compared to the BRF measurements in the near-infrared. The models generally fit the data for a young wheat canopy well. However, young corn and soybean canopies showed significant differences that are attributed to the escape of multiply scattered radiation from the sides of the canopy.-
dc.languageeng-
dc.relation.ispartofRemote Sensing of Environment-
dc.titleComparisons of radiative transfer models of vegetation canopies and laboratory measurements-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0034-4257(96)00247-7-
dc.identifier.scopuseid_2-s2.0-0031177991-
dc.identifier.volume61-
dc.identifier.issue1-
dc.identifier.spage129-
dc.identifier.epage138-
dc.identifier.isiWOS:A1997XC93600012-

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