Validation of global moderate-resolution LAI products:: A framework proposed within the CEOS Land Product Validation subgroup
Validation of global moderate-resolution LAI products:: A framework proposed within the CEOS Land Product Validation subgroup
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DOI：
10.1109/tgrs.2006.872529
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发表时间：
2006-07-01
影响因子：
8.2
通讯作者：
Cook, Robert
中科院分区：
文献类型：
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作者：
Morisette, Jeffrey T.;Baret, Frederic;Cook, Robert
地球观测卫星委员会校准和验证工作组（CEOS WGCV）成立于1984年，致力于协调、标准化和推进民用卫星及其数据的校准和验证。地球观测卫星委员会土地产品验证工作组的一个分组是2000年设立的，目的是确定标准验证准则和规程，并促进与土地产品验证有关的数据和信息交流。自那时以来，科学界在全球和区域范围内都可以获得一些叶面积指数产品。拥有多个全球LAI产品和与这些产品相关的多个不同的验证活动，为通过国际合作实现效率提供了机会。因此，LPV小组建立了国际LAI相互比较验证活动。本文介绍了这一国际验证工作的主要组成部分。本文记录了目前的参与者，他们的地面叶面积指数测量和缩放技术，以及元数据和基础设施建立共享数据。最后，本文介绍了共享现场数据和高分辨率LAI产品从每个站点的计划。这种全球叶面积指数相互比较的许多考虑可以适用于其他产品，本文提出了一个框架，这种合作。
Initiated in 1984, the Committee Earth Observing Satellites' Working Group on Calibration and Validation (CEOS WGCV) pursues activities to coordinate, standardize and advance calibration and validation of civilian satellites and their data. One subgroup of CEOS WGCV, Land Product Validation (LPV), was established in 2000 to define standard validation guidelines and protocols and to foster data and information exchange relevant to the validation of land products. Since then, a number of leaf area index (LAI) products have become available to the science community at both global and regional extents. Having multiple global LAI products and multiple, disparate validation activities related to these products presents the opportunity to realize efficiency through international collaboration. So the LPV subgroup established an international LAI intercomparison validation activity. This paper describes the main components of this international validation effort. The paper documents the current participants, their ground LAI measurements and scaling techniques, and the metadata and infrastructure established to share data. The paper concludes by describing plans for sharing both field data and high-resolution LAI products from each site. Many considerations of this global LAI intercomparison can apply to other products, and this paper presents a framework for such collaboration.