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	116/031	09/02/1999	111/028	05/15/2001