Skip to Main Content
MODIS land cover and LAI collection 4 product quality across nine states in the western hemisphere.Author(s): Warren B. Cohen; Thomas K. Maiersperger; David P. Turner; William D. Ritts; Dirk Pflugmacher; Robert E. Kennedy; Alan Kirschbaum; Steven W. Running; Marcos Costa; Stith T. Gower
Source: IEEE Transactions on Geoscience and Remote Sensing. 44(7): 1843-1857
Publication Series: Scientific Journal (JRNL)
PDF: Download Publication (2.6 MB)
DescriptionGlobal maps of land cover and leaf area index (LAI) derived from the Moderate Resolution Imaging Spectrometer (MODIS) reflectance data are an important resource in studies of global change, but errors in these must be characterized and well understood. Product validation requires careful scaling from ground and related measurements to a grain commensurate with MODIS products. We present an updated BigFoot project protocol for developing 25-m validation data layers over 49-km2 study areas. Results from comparisons of MODIS and BigFoot land cover and LAI products at nine contrasting sites are reported. In terms of proportional coverage, MODIS and BigFoot land cover were in close agreement at six sites. The largest differences were at low tree cover evergreen needleleaf sites and at an Arctic tundra site where the MODIS product overestimated woody cover proportions. At low leaf biomass sites there was reasonable agreement between MODIS and BigFoot LAI products, but there was not a particular MODIS LAI algorithm pathway that consistently compared most favorably. At high leaf biomass sites, MODIS LAI was generally overpredicted by a significant amount. For evergreen needleleaf sites, LAI seasonality was exaggerated by MODIS. Our results suggest incremental improvement from Collection 3 to Collection 4 MODIS products, with some remaining problems that need to be addressed.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationCohen, Warren B.; Maiersperger, Thomas K.; Turner, David P.; Ritts, William D.; Pflugmacher, Dirk; Kennedy, Robert E.; Kirschbaum, Alan; Running, Steven W.; Costa, Marcos; Gower, Stith T. 2006. MODIS land cover and LAI collection 4 product quality across nine states in the western hemisphere. IEEE Transactions on Geoscience and Remote Sensing. 44(7): 1843-1857
Keywordsland cover, Landsat, leaf area index (LAI), Moderate Resolution Imaging Spectrometer (MODIS), scaling, validation
- Evaluation of the MODIS LAI product using independent lidar-derived LAI: A case study in mixed conifer forest
- Evaluation of MODIS NPP and GPP products across multiple biomes.
- Modeling gross primary production of an evergreen needleleaf forest using MODIS and climate data
XML: View XML