On Line Validation Exercise (OLIVE): A Web Based Service for the Validation of Medium Resolution Land Products. Application to FAPAR Products
On Line Validation Exercise (OLIVE): A Web Based Service for the Validation of Medium Resolution Land Products. Application to FAPAR Products
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DOI：
10.3390/rs6054190
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
M. Weiss;F. Baret;T. Block;B. Koetz;A. Burini;Bettina Scholze;P. Lecharpentier;C. Brockmann;
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文献类型：
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作者：
M. Weiss;F. Baret;T. Block;B. Koetz;A. Burini;Bettina Scholze;P. Lecharpentier;C. Brockmann;
OLIVE （On Line Interactive Validation Exercise）平台致力于全球生物物理产品的验证，如叶面积指数（LAI）和光合有效辐射吸收分数（FAPAR）。它是在地球观测卫星委员会陆地产品验证（LPV）小组的框架下开发的。OLIVE有三个主要目标：(i)提供关于生物物理变量定义的一致和集中的信息，以及对主要可用产品及其性能的描述；（ii）通过符合ceo LPV和QA4EO（地球观测质量保证）建议的在线验证程序提供透明度和可追溯性；（iii）最后，提供对新产品进行基准测试的工具；更新产品验证结果，并主持新的地面测量站点进行准确性评估。描述了OLIVE的功能和算法，以使其程序对社区完全透明。举例说明了三种FAPAR产品：GEOV1（植被传感器）、MGVIo （MERIS传感器）和MODIS collection 5 FPAR的验证过程和典型结果。OLIVE可在欧洲航天局（CAL/VAL）门户网站上获得，包括完整的文档、验证练习结果和产品摘要。
The OLIVE (On Line Interactive Validation Exercise) platform is dedicated to the validation of global biophysical products such as LAI (Leaf Area Index) and FAPAR (Fraction of Absorbed Photosynthetically Active Radiation). It was developed under the framework of the CEOS (Committee on Earth Observation Satellites) Land Product Validation (LPV) sub-group. OLIVE has three main objectives: (i) to provide a consistent and centralized information on the definition of the biophysical variables, as well as a description of the main available products and their performances (ii) to provide transparency and traceability by an online validation procedure compliant with the CEOS LPV and QA4EO (Quality Assurance for Earth Observation) recommendations (iii) and finally, to provide a tool to benchmark new products, update product validation results and host new ground measurement sites for accuracy assessment. The functionalities and algorithms of OLIVE are described to provide full transparency of its procedures to the community. The validation process and typical results are illustrated for three FAPAR products: GEOV1 (VEGETATION sensor), MGVIo (MERIS sensor) and MODIS collection 5 FPAR. OLIVE is available on the European Space Agency CAL/VAL portal), including full documentation, validation exercise results, and product extracts.