Summary Results from:

The Importance of Measurement Error for Deriving Accurate Reference Leaf Area Index Maps and Validation of the MODIS LAI Product
As they relate to the validation of MOD15

Authors: Dong Huang, Wenze Yang, Bin Tan, Miina Rautiainen, Ping Zhang, Jiannan Hu, Nikolay Shabanov, Sune Linder, Yuri Knyazikhin, and Ranga B. Myneni

Source: IEEE Transactions on Geoscience and Remote Sensing, Vol. 44, No. 7, July 2006

Link to: Access Publication


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 require reference LAI maps developed from field LAI measurements and fine resolution satellite data. Uncertainties 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 uncertainties in fine resolution satellite data. The method is demonstrated with data from an international field campaign in a needle leaf forest near Flakaliden in Sweden, and ETM+ 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.