Status for: Vegetation Continuous Fields (MOD44)

General Accuracy Statement

Stage 3 validation has been achieved for the MODIS Vegetation Continuous Fields (VCF) product.

MODIS VCF (MOD44B) provides global sub-pixel estimates of land cover components (percent tree cover; percent non-tree vegetation; and percent non-vegetated) at 250 m spatial resolution. A global water mask (MOD44W) is also included as an embedded ancillary layer. The current version is Collection 6 (C6). All known issues with the product were addressed for the C6 reprocessing.

The Collection 5.1 tree cover product was validated to Stage 3 using high resolution satellite imagery with an error estimate of 11.5%. Independent analysis has found this may be higher in some areas where there was confusion between tree cover and very dense herbaceous cover. The MODIS Collection 6 processing used the same algorithm and training data as the previous collection and is also producing similar results to the C5.1 tree cover product. We are confident in assigning a similar error rate of 11.5% to the C6 tree cover and a validation level of Stage 3. Additional validation for C6 is currently underway.

Product status updated:  February 2024
Product version:  Collection 6.1
Supporting Studies:

Title: Conservation policy and the measurement of forests
Author: Sexton, Joseph O., Praveen Noojipady, Xiao-Peng Song, Min Feng, Dan-Xia Song, Do-Hyung Kim, Anupam Anand, Chengquan Huang, Saurabh Channan, Stuart L. Pimm & John R. Townshend
Source: Nature Climate Change, 6, no. 2, pp 192-196, doi:10.1038/nclimate2816
View Abstract and Access Publication
Title: Annual Carbon Emissions from Deforestation in the Amazon Basin between 2000 and 2010
Author: Song X-P, Huang C, Saatchi SS, Hansen MC, Townshend JR
Source: Public Library of Science; 2015 May 7;10(5):e0126754.
View Abstract and Access Publication
Title: Effect of woody-plant encroachment on livestock production in North and South America
Author: Anadon JD, Sala OE, Turner BL, Bennett EM
Source: Proceedings of the National Academy of Sciences; 2014 Sep 2; 111(35):12948-53.
View Abstract and Access Publication
Title: Global, 30-m resolution continuous fields of tree cover: Landsat-based rescaling of MODIS vegetation continuous fields with lidar-based estimates of error
Author: Sexton, Joseph O., Xiao-Peng Song, Min Feng, Praveen Noojipady, Anupam Anand, Chengquan Huang, Do-Hyung Kim, Kathrine M Collins, Saurabh Channan, Charlene DiMiceli, John R Townshend
Source: International Journal of Digital Earth, Volume 6, 2013 - Issue 5
View Abstract and Access Publication
Title: Large area forest stem volume mapping in the boreal zone using synergy of ERS-1/2 tandem coherence and MODIS vegetation continuous fields
Author: Cartus, Oliver, Maurizio Santoro, Christiane Schmullius, and Zengyuan Li
Source: Remote Sensing of Environment, 115, no. 3 (2011): 931-943.
View Abstract and Access Publication
Title: Quantification of global gross forest cover loss
Author: Hansen, Matthew C., Stephen V. Stehman, and Peter V. Potapov
Source: Proceedings of the National Academy of Sciences, 107, no. 19 (2010): 8650-8655.
View Abstract and Access Publication
Title: MODIS Vegetative Cover Conversion and Vegetation Continuous Fields
Author: Carroll, Mark, John Townshend, Matthew Hansen, Charlene DiMiceli, Robert Sohlberg, and Karl Wurster
Source: Land Remote Sensing and Global Environmental Change, Volume 11 of the series Remote Sensing and Digital Image Processing pp 725-745
View Abstract and Access Publication
Title: A method for integrating MODIS and Landsat data for systematic monitoring of forest cover and change in the Congo Basin
Author: Hansen, Matthew C., David P. Roy, Erik Lindquist, Bernard Adusei, Christopher O. Justice, and Alice Altstatt
Source: Remote Sensing of Environment 112, no. 5 (2008): 2495-2513
View Abstract and Access Publication
Title: Accuracy assessment of the vegetation continuous field tree cover product using 3954 ground plots in the south western USA
Author: White, M. A., J. D. Shaw, and R. D. Ramsey.
Source: International Journal of Remote Sensing 26, no. 12 (2005): 2699-2704
View Abstract and Access Publication