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MOD13A1_NDVI_Alaska

The dataset is based on NDVI values from the MOD13A1 data product.

Extent

  • 100 x 100 spatial locations
  • 8 images per year (DOYs: 145, 161, 177, 193, 209, 225, 241, 257)
  • 6 years (2004-2009)

Format

The R data object MOD13A1_NDVI_Alaska.RData contains the following data as R objects:

  • observed: the observed data, and array of dimension c(100, 100, 8, 6).
  • masked20: the same data as in observed but some additional values are set to NA (missing) according to an oberved cloud pattern. 20% of the data are NA.
  • masked30: the same data as in observed but some additional values are set to NA according to an oberved cloud pattern. 30% of the data are NA.
  • masked40: the same data as in observed but some additional values are set to NA according to an oberved cloud pattern. 40% of the data are NA.
  • masked50: the same data as in observed but some additional values are set to NA according to an oberved cloud pattern. 50% of the data are NA.

MOD13A1_NDVI_Alaska.R illustrates how the data can be loaded an visualized in R.

References

  • Didan, K. (2015). MOD13A1 MODIS/Terra Vegetation Indices 16-Day L3 Global 500m SIN Grid V006 [Data set]. NASA EOSDIS LP DAAC. doi: http://dx.doi.org/10.5067/MODIS/MOD13A1.006
  • Gerber, F., de Jong, R., Schaepman, M. E., Schaepman-Strub, G., and Furrer, R. Predicting missing values in spatio-temporal remote sensing data. IEEE Transactions on Geoscience and Remote Sensing, 56(5):2841–2853, 2018. http://dx.doi.org/10.1109/TGRS.2017.2785240