quarta-feira, 26 de novembro de 2008

GEO announces free Landsat imagery

The Group on Earth Observations (GEO) announced on 20 November 2008 that "the world will soon have the unrestricted access at no charge to the Landsat archive" .

Remote-sensing satellites are impartial and essential recorders of the fast-moving story of the Earth’s changing surface,” said José Achache, Director of the GEO Secretariat. “Landsat’s nearly four decades of accumulated Earth imagery data will provide an historical record that, combined with continuous updates, will make it possible to interpret and anticipate changes to the Earth’s surface with far greater certainty than ever before.


It' s good to see that they recognized the pioneering role of INPE.

GEO’s announcement last year that the China-Brazil Earth Resources Satellites (CBERS) would distribute its images free-of-charge was an essential first step.


INPE's catalog has been distributing free imagery from the CBERS family of satellites since 2004 and has already made available the Brazilian historical archive of MSS, TM and ETM+ data.

During the last year we've been working with the USGS Eros Data Center to ensure that the geometric and radiometric quality of those images match their own products' and creating tools to enable the exchange of those scenes using a common data format.

The validation of this work is being done this week in Sioux Falls but the latest version of our ground-station software already delivers some of those improvements to all users of Landsat imagery.

Nenhum comentário:

Postar um comentário