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The importance of measurement errors for deriving accurate reference leaf area index maps for validation of moderate-resolution satellite LAI products

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10 Author(s)
Dong Huang ; Dept. of Geogr., Boston Univ., MA ; Wenze Yang ; Tan, B. ; Rautiainen, M.
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The validation of moderate-resolution satellite leaf area index (LAI) products such as those operationally generated from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor data requires reference LAI maps developed from field LAI measurements and fine-resolution satellite data. Errors in field measurements and satellite data determine the accuracy of the reference LAI maps. This paper describes a method by which reference maps of known accuracy can be generated with knowledge of errors in fine-resolution satellite data. The method is demonstrated with data from an international field campaign in a boreal coniferous forest in northern Sweden, and Enhanced Thematic Mapper Plus images. The reference LAI map thus generated is used to assess modifications to the MODIS LAI/fPAR algorithm recently implemented to derive the next generation of the MODIS LAI/fPAR product for this important biome type

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:44 ,  Issue: 7 )