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

Research output: Contribution to journalArticle

Researchers

  • Dong Huang
  • Wenze Yang
  • Bin Tan
  • Miina Rautiainen

  • Ping Zhang
  • Jiannan Hu
  • Nikolay V. Shabanov
  • Sune Linder
  • Yuri Knyazikhin
  • Ranga B. Myneni

Research units

  • Boston University
  • University of Helsinki
  • Swedish University of Agricultural Sciences

Abstract

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.

Details

Original languageEnglish
Article number1645286
Pages (from-to)1866-1870
Number of pages5
JournalIEEE Transactions on Geoscience and Remote Sensing
Volume44
Issue number7
Publication statusPublished - Jul 2006
MoE publication typeA1 Journal article-refereed

    Research areas

  • Leaf area index (LAI), Moderate Resolution-Imaging Spectroradiometer (MODIS), Validation of satellite biophysical products

ID: 7047651