DHAKA: Construction has begun on a giant observation tower in the heart of the Amazon basin to monitor climate change.

The Amazon Tall Tower Observatory is expected to rise 325m from the ground.

Its instruments will gather data on greenhouse gases, aerosol particles and the weather in one of the largest continuous rain forests on the planet.

Brazilian and German scientists hope to use the data to better understand sources of greenhouse gases and answer questions on climate change.

The tower is being constructed out of steel that was brought thousands of kilometres from the south of Brazil by road and river raft to the site 170 km outside the Amazonian city of Manaus.

Because of its height, the tower will make it possible to investigate the alteration and movement of air masses through the forest over a distance of several hundred kilometres.

Source: BBC

BDST: 0848 HRS, SEP 15, 2014