Tasselled Cap Wetness

Tasselled Cap Wetness is derived from the MODIS MCD43D62, MCD43D63, MCD43D64, MCD43D65, MCD43D66, MCD43D67 and MCD43D68 v6.1 products. TCW is first calculated on the datasets using the formula from Lobser & Cohen (2007) and then the outputs are gap-filled using the approach outlined in Weiss et al (2014) to eliminate missing data caused by factors such as cloud cover.

Directories are structured in the following way: TCW_v061/{Resolution}/{TemporalSummary}

And under that, filenames are structured by:
8-daily: TCW_v061.{Year}.{JulianDay}.Data.{Resolution}.{SpatialSummary}.tif
Monthly: TCW_v061.{Year}.{Month}.{TemporalSummary}.{Resolution}.{SpatialSummary}.tif
Annual: TCW_v061.{Year}.Annual.{TemporalSummary}.{Resolution}.{SpatialSummary}.tif
Synoptic: TCW_v061.Synoptic.{Month-or-Overall}.{TemporalSummary}.{Resolution}.{SpatialSummary}.tif

Resolution in this dataset is either 1km or 5km

Standard values for TemporalSummary are: min, max, range, mean, SD, count. In addition there are:

• Data: this indicated that no temporal aggregation has occurred
• Balanced-mean: This is specific to overall synoptic data, it represents the mean of the 12 monthly synoptic mean datasets as opposed to the overall mean of the (e.g. daily) data. This gives a weighting to help correct for seasonal bias that could otherwise be present in areas where data are more often missing at certain times of year.

Standard values for SpatialSummary are: min, max, range, sum, mean, SD, count. In addition:

• Data: this indicates that no spatial aggregation has occurred