Description

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The Deforestation Alert System (Sistema de Alerta de Desmatamento—SAD) is a monthly alert that monitors forest cover loss and forest degradation in the Brazilian Amazon. The system generates information that is published monthly by Imazon, a Brazilian NGO, through its Forest Transparency Bulletin. The monthly alerts are derived from a temporal mosaic of MODIS daily images that are scaled down from 500 × 500 meter to 250 × 250 meter resolution. The monthly results are then validated using medium resolution images from the China-Brazil Earth Resources Satellite (CBERS) and NASA Landsat data in order to “ground-truth” the results being reported.

Dataset Attributes

  • OBJECTID
    Number
  • date
    Date
    1209513600000 to 1485820800000
  • data_type
    Text
    {"value"=>"defor", "count"=>33049} (), {"value"=>"degrad", "count"=>13387} ()
  • orig_oid
    Text
    {"value"=>"0", "count"=>74} (), {"value"=>"1", "count"=>73} (), {"value"=>"3", "count"=>71} (), {"value"=>"2", "count"=>71} (), {"value"=>"4", "count"=>70} (), {"value"=>"5", "count"=>69} (), {"value"=>"6", "count"=>68} (), {"value"=>"7", "count"=>67} (), {"value"=>"10", "count"=>65} (), {"value"=>"9", "count"=>65} ()
  • orig_fname
    Text
    {"value"=>"imazongeo_sad_deforestation_2008-04_2013-12.shp", "count"=>18433} (), {"value"=>"imazongeo_sad_degradation_2008-10_2013-12.shp", "count"=>9623} (), {"value"=>"imazon_sad_desmatamento_2016_06_amazonia.shp", "count"=>1284} (), {"value"=>"imazon_sad_desmatamento_2015-07_amazonia.shp", "count"=>1024} (), {"value"=>"imazon_sad_desmatamento_2015-08_amazonia.shp", "count"=>945} (), {"value"=>"imazon_sad_desmatamento_2014-06_amazonia.shp", "count"=>942} (), {"value"=>"imazon_sad_desmatamento_2014-08_amazonia.shp", "count"=>807} (), {"value"=>"imazon_sad_desmatamento_2016_08_amazonia.shp", "count"=>796} (), {"value"=>"imazon_sad_desmatamento_2016_07_amazonia.shp", "count"=>790} (), {"value"=>"imazon_sad_desmatamento_2014-09_amazonia.shp", "count"=>772} ()
  • gfwid
    Text
    {"value"=>"9A233169-3195-4544-A93C-77770513C86D", "count"=>1} (), {"value"=>"0A5F1F63-C142-4AAA-8EE9-15E0D895F52F", "count"=>1} (), {"value"=>"42A61368-8832-4DEE-97A3-2CE4F56EFAEF", "count"=>1} (), {"value"=>"44F5D80E-F3EA-485C-8E5C-D37E115B6408", "count"=>1} (), {"value"=>"D4A42EB5-EC33-404D-9DB9-B01627196F99", "count"=>1} (), {"value"=>"4438E63F-CC05-4B77-A17B-33273ACE38B9", "count"=>1} (), {"value"=>"511C3765-76B7-49B2-94AC-6DE126AF5861", "count"=>1} (), {"value"=>"D2BC78A9-DDBF-4DFB-AB92-00C644D20E1C", "count"=>1} (), {"value"=>"A97F6AE6-1AFF-4F32-913D-E71142CB3631", "count"=>1} (), {"value"=>"70BE82BF-FBEF-456D-9189-E8E9FD458571", "count"=>1} ()
  • globalid
    Number
  • ha_eck_iv
    Number
    0.00058202 to 172365.843575
  • date_alias
    Date
    1209513600000 to 1485820800000
  • shape
    Number
  • shape_Length
    Number
  • shape_Area
    Number

About

  • By on September 16, 2015
  • Updated 1 day ago

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