globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50497
论文题名:
The fourth radiation transfer model intercomparison (RAMI-IV): Proficiency testing of canopy reflectance models with ISO-13528
作者: Widlowski J.-L.; Pinty B.; Lopatka M.; Atzberger C.; Buzica D.; Chelle M.; Disney M.; Gastellu-Etchegorry J.-P.; Gerboles M.; Gobron N.; Grau E.; Huang H.; Kallel A.; Kobayashi H.; Lewis P.E.; Qin W.; Schlerf M.; Stuckens J.; Xie D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:13
起始页码: 6869
结束页码: 6890
语种: 英语
英文关键词: BRDF ; ISO standards ; model comparison ; radiative transfer models ; validation ; vegetation canopies
Scopus关键词: Computer simulation ; Radiative transfer ; BRDF ; ISO standards ; Model comparison ; Radiative transfer model ; validation ; Vegetation canopy ; Climate models ; canopy reflectance ; data set ; error analysis ; experimental study ; numerical model ; performance assessment ; plant ; radiative transfer ; satellite imagery ; vegetation structure
英文摘要: The radiation transfer model intercomparison (RAMI) activity aims at assessing the reliability of physics-based radiative transfer (RT) models under controlled experimental conditions. RAMI focuses on computer simulation models that mimic the interactions of radiation with plant canopies. These models are increasingly used in the development of satellite retrieval algorithms for terrestrial essential climate variables (ECVs). Rather than applying ad hoc performance metrics, RAMI-IV makes use of existing ISO standards to enhance the rigor of its protocols evaluating the quality of RT models. ISO-13528 was developed "to determine the performance of individual laboratories for specific tests or measurements." More specifically, it aims to guarantee that measurement results fall within specified tolerance criteria from a known reference. Of particular interest to RAMI is that ISO-13528 provides guidelines for comparisons where the true value of the target quantity is unknown. In those cases, "truth" must be replaced by a reliable "conventional reference value" to enable absolute performance tests. This contribution will show, for the first time, how the ISO-13528 standard developed by the chemical and physical measurement communities can be applied to proficiency testing of computer simulation models. Step by step, the pre-screening of data, the identification of reference solutions, and the choice of proficiency statistics will be discussed and illustrated with simulation results from the RAMI-IV "abstract canopy" scenarios. Detailed performance statistics of the participating RT models will be provided and the role of the accuracy of the reference solutions as well as the choice of the tolerance criteria will be highlighted. Key Points ISO-13528 can be applied to the verification of computer simulation models. Model comparisons require detailed definitions on acceptable bias levels. Operator choices/errors are likely cause for most observed biases in RAMI-IV. ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63573
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Institute for Environment and Sustainability, DG Joint Research Centre, European Commission, I-21027 Ispra (VA), Italy; Institute of Surveying, Remote Sensing and Land Information, University of Natural Resources and Life Sciences, Vienna, Austria; Industrial Emissions, Air Quality and Noise Unit, DG Environment, Brussels, Belgium; Institut National de la Recherche Agronomique, Thiverval-Grignon, France; Department of Geography, University College London, United Kingdom; Department of Meteorology, NERC National Centre for Earth Observation (NCEO), University of Reading, Reading, United Kingdom; Centre d'Etudes Spatiales de la BIOsphère, Toulouse, France; Beijing Forestry University, Beijing, China; Institut Supérieur d'Electronique et de Communication de Sfax, Tunisia; Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, United States; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; Science Systems and Applications, Inc., Greenbelt, MD, United States; Département Environnement et Agro-biotechnologie, Centre de Recherche Public - Gabriel Lippmann, Belvaux, Luxembourg; Biosystems Department, Katholieke Universiteit Leuven, Leuven, Belgium; Research Center for Remote Sensing and GIS, School of Geography, Beijing Normal University, Beijing, China

Recommended Citation:
Widlowski J.-L.,Pinty B.,Lopatka M.,et al. The fourth radiation transfer model intercomparison (RAMI-IV): Proficiency testing of canopy reflectance models with ISO-13528[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(13)
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