Greenhouse gases (GHG)

Gaseous constituents of the atmosphere, from natural or anthropic sources, that absorb and re-emit infrared radiation. The UNFCCC and Kyoto Protocol count for carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O), and sulfur hexafluoride (SF₆), accompanied by two families of gases – hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) .

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Arc of deforestation

The region where the agricultural border advances towards the forest and also where the highest rates of deforestation of the Amazon are found. It corresponds to 500 thousand km² of land, going from the east and south of the Brazilian state of Pará towards the...

Albedo

The proportions of solar radiation reflected by a surface or object, expressed in percentage. Snow-covered surfaces have high albedo level; ground (soil) albedo can be high or low; vegetation-covered surfaces and oceans have low albedo level. The Earth’s albedo...

Forest

It is a land area of at least 0.05-1.0 hectare with tree crown cover (or equivalent level of stock) with more than 10-30% of trees having the potential to reach the minimum height of 2-5 meters in in situ maturity. A forest may consist of closed forest...