20 April 2005
Australian Greenhouse Office (AGO) data, known as the Landsat AGO Product Suite, is now available from ACRES. This data has been used by the Australian Greenhouse Office in their National Carbon Accounting System for monitoring land clearing and revegetation and should prove to be a valuable asset for land managers. The data consists of 12 epoch datasets ranging from 1972 to 2002 and includes the previously released Landsat 7 Y2K mosaic data as the 2000 epoch. The data is available in the form of 1:1 million scale tiles or as a Continental mosaic for each epoch.
The dataset is large in volume. Individual tiles range from 0.3 to 4.7 Gb in size. The National dataset consisting of all mosaics, tiles and epochs adds up to:
Prices range from $250 per tile or Continental mosaic on DVD, to $2150 for all the mosaics, tiles and epochs written to a customer supplied Universal Serial Bus (USB) specification media. Ordering conditions apply, and pricing depends upon order quantity and media choice of DVD-R or USB 2.0 portable hard disk.
2 April 2005
ACRES is now offering Landsat 7 SLC-Off composite products. This follows the release last year of SLC-Off products and SLC-On/Off composite products, due to the failure of the Scan Line Corrector (SLC) on the Landsat 7 satellite in 2003. The new SLC-Off Composite products are a significant step forward in providing more useful Landsat 7 data:
SLC-Off composite products will only be available as ortho-corrected products and in Fast L7A format. When ordering a Landsat 7 ETM+ SLC-Off composite product, customers need to nominate a primary SLC-Off scene to be used as the base image.
For optimal results, the images chosen to generate a gap-filled product should be from the same season and contain minimal transient data such as clouds, snow cover or fires, and be free from errors or quality issues.
The figure below is an example (near a scene edge) of part of a composite product generated from two SLC-Off scenes.