August 2002

• Deforestation Mapping Group undertakes a field campaign in Western Canada

  Two staff members of the Deforestation Mapping Group, Alice Altstatt and Didier Devers, have begun an ambitious 2 week field campaign in Western Canada. The purpose of this field work is to validate deforestation products the group is developing for extensive areas of Canada's forests. They periodically send us updates on their activities and have recently sent some photos from the study areas.

  • Here's the team with their equipment performing aerial surveys
  • While flying they are able to capture still images of forest cover. These can be used to help in the validation process of classified imagery of the area
  • Mixed spruce, lodgepole pine, and aspen forest near Swan Hills,
    Alberta, Canada
  • Heterogeneous landscape northeast of Peace River, Alberta as captured
    by still photography during an aerial survey
  • A six week old burn in the area northeast of Peace River, Alberta
  • The DMG field team supplemented over flight photography with on the
    ground canopy cover measurements
  
  
• Treemaps Used to Visualize Data Holdings

The Human-Computer Interaction Laboratory (HCIL) at the University of Maryland has provided us tools to visualize our data holdings using treemaps. With this technology, we can view our entire online data store and it aids in finding missing, extraneous, and duplicate data. The current version uses metadata from the underlying file system to generate the treemaps. Future plans have been made to integrate the tools with our database to also include our archived holdings. Additional information on treemaps can be found at http://www.cs.umd.edu/hcil/treemap

• Contribution of 32 Landsat images

GLCF recently received a contribution of 32 Landsat images for an area in the Russian Far East, an area for which there is currently no landsat data in our archives. We would like to thank Dale Miquelle of the WCS Asia Program (owner of the images) and Gillian Woolmer of the Wildlife Conservation Society (facilitated in the sharing process) for sharing their data with us. This data will not be available for download for a few months.

Path/Row Acquisition Date	Path/Row Acquisition Date	Path/Row Acquisition Date
112/030 09/06/1999	112/029 10/29/2001	111/029 07/13/1999
111/028 09/04/2001	111/026 05/15/2001	114/030 05/17/2000
112/029 09/11/2001	113/028 11/02/2000	114/030 09/25/2001
112/028 10/29/2001	111/028 10/1/1999	114/027 09/25/2001
113/030 07/13/2000	113/029 07/13/2000	112/028 06/07/2001
113/028 10/31/1999	115/030 10/02/2001	115/029 05/24/2000
114/028 09/25/2001	111/025 05/15/2001	110/25 09/10/2000
112/030 10/10/2000	112/028 11/27/2000	115/028 08/12/2000
112/028 09/08/2000	114/029 09/25/2001	115/029 09/31/2001
116/030 10/22/2000	116/031 09/02/1999	113/030 04/08/2000
116/030 09/07/2001	111/028 05/15/2001