10 Years of Vegetation Greenness data for Australia.
An array of 117 satellite images of the greenness (NDVI) of the Australian
land surface. Many individual images have been composited to produce an
average landcover greenness for each month from July 1981 to December 1991.
The images are arranged in rows of 12 months, from April to March. This
'year' coincides with the average life span of an El Nino event; an oceanic
- atmospheric phenomenon that strongly influences the frequency and severity
of droughts in eastern Australia.
The NDVI images are colour coded from mauve (no greenness, low NDVI values)
through red - yellow - green - blue (high greenness and NDVI values).
If you scan across any row of these images, you can appreciate the change
in greenness within 'years'. If you scan down the columns, ie for any one
month, you can appreciate the greenness variation between 'years'. The very
severe drought of 1982 - 1983 can be detected by variation in landcover
greenness in the winter rainfall areas of the continent for the months of
August, September and October.
Click here to play the images in chronological order.
Click here to view individual images
