The fourth phase of the radiative transfer model intercomparison (RAMI) exercise : Actual canopy scenarios and conformity testing

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dc.contributor University of Helsinki, Department of Geosciences and Geography en
dc.contributor University of Helsinki, Aalto University en
dc.contributor.author Widlowski, Jean-Luc
dc.contributor.author Mio, Corrado
dc.contributor.author Disney, Mathias
dc.contributor.author Adams, Jennifer
dc.contributor.author Andredakis, Ioannis
dc.contributor.author Atzberger, Clement
dc.contributor.author Brennan, James
dc.contributor.author Busetto, Lorenzo
dc.contributor.author Chelle, Michaël
dc.contributor.author Ceccherini, Guido
dc.contributor.author Colombo, Roberto
dc.contributor.author Côté, Jean-Francois
dc.contributor.author Eenmäe, Alo
dc.contributor.author Essery, Richard
dc.contributor.author Gastellu-Etchegorry, Jean-Philippe
dc.contributor.author Gobron, Nadine
dc.contributor.author Grau, Eloi
dc.contributor.author Haverd, Vanessa
dc.contributor.author Homolová, Lucie
dc.contributor.author Huang, Huaguo
dc.contributor.author Hunt, Linda
dc.contributor.author Kobayashi, Hideki
dc.contributor.author Koetz, Benjamin
dc.contributor.author Kuusk, Andres
dc.contributor.author Kuusk, Joel
dc.contributor.author Lang, Mait
dc.contributor.author Lewis, Philip E.
dc.contributor.author Lovell, Jennifer L.
dc.contributor.author Malenovský, Zbyněk
dc.contributor.author Meroni, Michele
dc.contributor.author Morsdorf, Felix
dc.contributor.author Mõttus, Matti
dc.contributor.author Ni-Meister, Wenge
dc.contributor.author Pinty, Bernard
dc.contributor.author Rautiainen, Miina
dc.contributor.author Schlerf, Martin
dc.contributor.author Somers, Ben
dc.contributor.author Stuckens, Jan
dc.contributor.author Verstraete, Michel M.
dc.contributor.author Yang, Wenze
dc.contributor.author Zhao, Feng
dc.contributor.author Zenone, Terenzio
dc.date.accessioned 2017-07-25T06:52:00Z
dc.date.available 2017-07-25T06:52:00Z
dc.date.issued 2015
dc.identifier.citation Widlowski , J-L , Mio , C , Disney , M , Adams , J , Andredakis , I , Atzberger , C , Brennan , J , Busetto , L , Chelle , M , Ceccherini , G , Colombo , R , Côté , J-F , Eenmäe , A , Essery , R , Gastellu-Etchegorry , J-P , Gobron , N , Grau , E , Haverd , V , Homolová , L , Huang , H , Hunt , L , Kobayashi , H , Koetz , B , Kuusk , A , Kuusk , J , Lang , M , Lewis , P E , Lovell , J L , Malenovský , Z , Meroni , M , Morsdorf , F , Mõttus , M , Ni-Meister , W , Pinty , B , Rautiainen , M , Schlerf , M , Somers , B , Stuckens , J , Verstraete , M M , Yang , W , Zhao , F & Zenone , T 2015 , ' The fourth phase of the radiative transfer model intercomparison (RAMI) exercise : Actual canopy scenarios and conformity testing ' , Remote Sensing of Environment , vol. 169 , pp. 418 - 437 . https://doi.org/10.1016/j.rse.2015.08.016 en
dc.identifier.issn 0034-4257
dc.identifier.other PURE: 56314385
dc.identifier.other PURE UUID: 34bf24ed-25a4-4aa8-b7c9-1e8a4811cb07
dc.identifier.other Bibtex: urn:13fe51fc06e7932f8877a4f5d8809a19
dc.identifier.other Scopus: 84928727193
dc.identifier.other WOS: 000363815900032
dc.identifier.uri http://hdl.handle.net/10138/203747
dc.description.abstract The RAdiative transfer Model Intercomparison (RAMI) activity focuses on the benchmarking of canopy radiative transfer (RT) models. For the current fourth phase of RAMI, six highly realistic virtual plant environments were constructed on the basis of intensive field data collected from (both deciduous and coniferous) forest stands as well as test sites in Europe and South Africa. Twelve RT modelling groups provided simulations of canopy scale (directional and hemispherically integrated) radiative quantities, as well as a series of binary hemispherical photographs acquired from different locations within the virtual canopies. The simulation results showed much greater variance than those recently analysed for the abstract canopy scenarios of RAMI-IV. Canopy complexity is among the most likely drivers behind operator induced errors that gave rise to the discrepancies. Conformity testing was introduced to separate the simulation results into acceptable and non-acceptable contributions. More specifically, a shared risk approach is used to evaluate the compliance of RI model simulations on the basis of reference data generated with the weighted ensemble averaging technique from ISO-13528. However, using concepts from legal metrology, the uncertainty of this reference solution will be shown to prevent a confident assessment of model performance with respect to the selected tolerance intervals. As an alternative, guarded risk decision rules will be presented to account explicitly for the uncertainty associated with the reference and candidate methods. Both guarded acceptance and guarded rejection approaches are used to make confident statements about the acceptance and/or rejection of RT model simulations with respect to the predefined tolerance intervals. (C) 2015 The Authors. Published by Elsevier Inc. en
dc.format.extent 20
dc.language.iso eng
dc.relation.ispartof Remote Sensing of Environment
dc.relation.uri http://www.sciencedirect.com/science/article/pii/S0034425715301048
dc.rights en
dc.subject 115 Astronomy, Space science en
dc.subject 1171 Geosciences en
dc.subject 4112 Forestry en
dc.title The fourth phase of the radiative transfer model intercomparison (RAMI) exercise : Actual canopy scenarios and conformity testing en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1016/j.rse.2015.08.016
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion
dc.contributor.pbl

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