Retrieval of seasonal dynamics of forest understory reflectance in a Northern European boreal forest from MODIS BRDF data

Jan Pisek*, Miina Rautiainen, Janne Heiskanen, Matti Mõttus

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

41 Citations (Scopus)

Abstract

The spatial and temporal patterns of the forest background reflectance are critically important for retrieving the biophysical parameters of the forest canopy (overstory) and for ecosystem modeling. In this short communication paper, we retrieve the reflectance and seasonal changes of the forest background at 500. m resolution with the 8-day MODIS bidirectional reflectance distribution function (BRDF) model parameters product. For the first time, the satellite data derived results are directly validated with in situ measured seasonal reflectance trajectories of boreal forest understory layers. Our results illustrate the importance of taking into account the documented quality and limitations of the MODIS BRDF product.

Original languageEnglish
Pages (from-to)464-468
Number of pages5
JournalRemote Sensing of Environment
Volume117
DOIs
Publication statusPublished - 15 Feb 2012
MoE publication typeA1 Journal article-refereed

Funding

The authors wish to thank Anu Akujärvi and Titta Majasalmi for field work at the Hyytiälä test site. MODIS MCD43 BRDF product tiles were acquired from Land Processes Distributed Active Archive Center (LP DAAC). Funding was provided from the Academy of Finland , Emil Aaltonen Foundation , University of Helsinki Research and Postdoctoral Funds . We are grateful to three anonymous reviewers for helping to improve the manuscript. The detailed suggestions by the third reviewer were particularly appreciated.

Keywords

  • Boreal
  • MODIS BRDF
  • Multi-angle remote sensing
  • Understory

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