Trees in the Amazon make their own rain

Trees in the Amazon make their own rain

For years, researchers have been nosey about the rainy season in the Amazon that is timed a little differently than other tropical regions. The mystery is ultimately solved as researchers have now discovered that the trees in the Amazon create their own rainy season. Imagine an ecosystem so self-sufficient that it makes its own rain!

Rainfall commences sooner in the Amazon and the source of this has always remained a mystery. A lot of research was conducted previously to investigate this but the phenomenon had continued to confound the researchers. The water vapor was visible but the scientists weren’t able to trace the source. The fresh research, which is published in the journal Proceedings of the National Academy of Sciences (PNAS), studied water vapor data from NASA’s Tropospheric Emission Spectrometer (TES) on the Aura satellite. After analyzing the data, researchers discovered that the clouds that were seen at the end of the dry season were a result of the evaporated water from the forest itself.    

Rong Fu, a climate scientist at the University of California, Los Angeles who was involved in the investigate stated that the increase in the ‘rain’ coincided with the rainforest growing and an overall increase in fresh leaves. This growth in leaves directly influences the process of photosynthesis, which is the plant’s capability to convert energy. During photosynthesis, water vapor is released from puny pores on the underside of their leaves thereby creating clouds.  

In a 2012 probe, scientists had attempted to investigate the connection inbetween the trees in the Amazon and rain. They discovered that plants release little salt particles that help the atmosphere get ready for rain. But the fresh probe effectively establishes that plants play an significant role in creating and regulating the rainy season.

The research also throws open a long-standing debate about the importance of plants with regard to weather. Debunking the traditional view of plants merely being passive, the probe indicates that they can play an active role in creating rain. Additionally, the probe also highlights how practices such as deforestation will have to be curbed to address drought. Researchers are now keen on studying rainforests in the Congo to understand if the same phenomenon is at play there.

doi/Ten.1073/pnas.1621516114

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