Credit
We at TERN acknowledge the Traditional Owners and Custodians throughout Australia, New Zealand and all nations. We honour their profound connections to land, water, biodiversity and culture and pay our respects to their Elders past, present and emerging.
This dataset has been developed by the Time Series Remote Sensing Team, CSIRO Land and Water in conjunction with the Environmental Biology Group at the Australian National University. The original data were supplied by CSIRO Marine and Atmospheric Research. This work has been supported by the eWater CRC.
Purpose
Data are suited to the analysis of long-term dynamics (trends) in vegetation cover. Data are monthly grids of 0.08 degree cell size from July 1981 onwards and of 0.01 degree from Feb 1995 onwards.
Supplemental Information
Please refer to the "AVHRR_VegData_readme_v5.txt" file.
Lineage
Data Creation
Spatial resolution:
Pathfinder AVHRR Land (PAL) data (0.08 degree resolution), spanning July 1981-April 1994, have been combined with High Resolution Picture Transmission (HRPT) data (0.01 degree resolution), spanning February 1995-December 2006. When the HRPT data are supplied at 0.08 degree-equivalent resolution, the original 0.01 degree HRPT data have been resampled to 0.08 degrees by averaging the data into 64-pixel squares which approximately align with overlying PAL pixels.
Version history:
Version 3: Data produced using the method described in Donohue et al. (2008). This version was created in March 2008, and included minor refinements to V2 to address feedback from the Remote Sensing of Environment external reviewers.
Version 4: Update to the persistent and recurrent fPAR data (7 July 2008). A coding error was found in the program used to create the FTP version of the dataset. Whilst this would have only affected the persistent and recurrent data, all variables have been recalculated.
Version 5: Created as an update to version 4 extending it to October 2011. The global thresholds used to rescale NDVI to fPAR were recalculated for the HRPT (0.01) data. This means the fPAR data values for the months within the 1992-2006 period are likely to differ from values in the same months in version 4. All data from the GAC (0.08) data are the same as version 4.