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Scientists use a climate "time machine" in Amazon to prepare for the COP30

Scientists in Brazil's Amazon have created a "time-machine" that pumps carbon dioxide into the canopy of the rainforest to simulate future atmospheric conditions to gauge the biome's adaptation. This is an open question which will be discussed next month at the COP30 United Nations Climate Summit hosted by Brazil.

The AmazonFACE project, near Manaus, Amazon's largest city, features six steel tower rings that loom over the jungle canopy. Each ring is surrounded by groups of 50-70 mature trees.

After baseline testing, the scientists will fumigate three of the rings using carbon dioxide in levels that simulate climate forecasts over the next decade, with the remaining samples serving as control samples.

"We are trying to create an atmosphere of the future," Carlos Quesada said, a coordinator for INPA (National Institute for Amazon Research), which is leading this experiment along with Universidade Estadual de Campinas.

Scientists say that the preservation of tropical rainforests such as the Amazon is crucial to reducing the worst impacts of climate change. Scientists say that the preservation of tropical rainforests like the Amazon is vital to curbing the worst effects of climate change.

FACE (Free-Air CO2 Enrichment) will allow Quesada to study the effects of elevated levels of carbon dioxide on rainforest giants and the surrounding plant life. The Brazilian federal government and United Kingdom are supporting the project.

AmazonFACE is a new frontier for forestry engineer Gustavo Carvalho. FACE has been tested around the globe, including in the United States where the Department of Energy conducted temperate biomes tests.

Carvalho, under the shade provided by the Amazon canopy, said: "This is the very first time that a forest of this magnitude has been experimented in the tropical regions."

Carvalho explained that baseline testing is underway. Sensors record every 10 minutes the forest's reaction to changing conditions. They show how the trees absorb carbon dioxide and release oxygen and water vapour in response to rainstorms, sunshine and storms.

In the future, artificial microclimates will be created with higher levels of carbon dioxide.

Carvalho explained that if a model predicts (a certain amount of carbon dioxide in the air) in 2050-2060, we will increase the amount to this amount to see how the forest reacts. "We will have a small area in the forest where we can enter to know what the future holds."

(source: Reuters)