The RAMI On-line Model Checker (ROMC): A web-based benchmarking facility for canopy reflectance models
The RAMI On-line Model Checker (ROMC): A web-based benchmarking facility for canopy reflectance models
复制标题
DOI：
10.1016/j.rse.2007.07.016
复制
发表时间：
2008-03
影响因子：
13.5
通讯作者：
J. Widlowski;M. Robustelli;M. Disney;J. Gastellu-Etchegorry;T. Lavergne;Philip Lewis;P. North;
中科院分区：
文献类型：
--
作者：
J. Widlowski;M. Robustelli;M. Disney;J. Gastellu-Etchegorry;T. Lavergne;Philip Lewis;P. North;
全球地球观测数据的利用越来越依赖于基于物理的辐射传输（RT）模型。这些模型模拟太阳辐射在给定介质内的相互作用（例如，云、植物冠层），并用于生成嵌入定量检索算法的查找表，例如为中分辨率成像分光仪、多分辨率遥感器和中分辨率遥感信息系统提供业务表面产品的算法。因此，冠层RT模型的质量评估似乎是必不可少的，如果准确和可靠的信息是来自他们。直到最近，这一工作仍是一个耗时耗力的过程，由于普遍缺乏绝对的参考标准，这一过程更具挑战性。在辐射转移模型相互比较工作的框架内开展了几年的基准活动，现已开发出辐射转移模型在线模型相互比较。ROMC是一个基于网络的工具，允许模型开发人员和用户自主评估冠层RT模型的性能（http：//romc.jrc.ec.europa.eu/）。访问ROMC是免费的，使用户能够获得统计和图形指示，他们的冠层RT模型的性能。除了提供给定模型正确匹配参考数据的技能的总体指示之外，ROMC还允许对给定用户的不同模型版本/提交进行交互式比较/评估。所有的ROMC图表都可以下载为PDF格式，并带有参考编号，便于在演示和出版物中使用。希望ROMC将证明是有用的RT建模社区作为一个整体，不仅提供了一个方便的手段来评估模型以外的三年期阶段的RAMI，但也吸引参与未来的RAMI活动。
The exploitation of global Earth Observation data hinges increasingly on physically-based radiative transfer (RT) models. These models simulate the interactions of solar radiation within a given medium (e.g., clouds, plant canopies) and are used to generate look-up-tables that are embedded into quantitative retrieval algorithms, such as those delivering the operational surface products for MODIS, MISR and MERIS. An assessment of the quality of canopy RT models thus appears essential if accurate and reliable information is to be derived from them. Until recently such an undertaking was a time consuming and labour intensive process that was made even more challenging by the general lack of absolute reference standards. Several years of benchmarking activities in the frame of the RAdiation transfer Model Intercomparison (RAMI) exercise have now led to the development of the RAMI On-line Model Checker (ROMC). The ROMC is a web-based tool allowing model developers and users to autonomously assess the performance of canopy RT models (http://romc.jrc.ec.europa.eu/). Access to the ROMC is free and enables users to obtain both statistical and graphical indications as to the performance of their canopy RT model. In addition to providing an overall indication of the skill of a given model to correctly match the reference data, the ROMC allows also for interactive comparison/evaluations of different model versions/submissions of a given user. All ROMC graphs can be downloaded in PostScript format and come with a reference number for easy usage in presentations and publications. It is hoped that the ROMC will prove useful for the RT modeling community as a whole, not only by providing a convenient means to evaluate models outside the triennial phases of RAMI but also to attract participation in future RAMI activities.