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IITM study : Rainwater in Pune region alkaline in nature

Rainwater over Pune is basic in nature and there are no destructive degrees of synthetic compounds equipped for setting off corrosive downpour in the locale, researchers from the Indian Institute of Tropical Meteorology (IITM) said on Tuesday.

A group of analysts gathered water tests from Pashan (metropolitan) and Sinhagad (rustic) during rainstorm from 2006 to 2016. They considered the synthetic creation of these examples, which is likewise a significant marker of the encompassing air quality.

“The samples from Pune and Sinhagad were alkaline in nature. But rainwater collected from Sinhagad was slightly less alkaline than samples from Pune. This was mainly contributed by comparatively lower concentration of ammonium and more concentration of sulphate,” said Pramod Safai, senior IITM researcher, who was part of the study published in Air Quality, Atmosphere and Health.

Water contains ocean salt, soil dust, particles of anthropogenic beginning and gases from different outflows from one or the other nearby or inaccessible sources.

Situated at an elevation of in excess of 1,300 meters above mean ocean level, Sinhagad appreciates certain points of interest over Pashan. “Sinhagad records heavy rainfall during monsoon. Rainwater in itself has several chemicals in the form of aerosols and gases mixed in it. Due to the neutralising effect of ammonium and dust, which contains calcium, acidity of rainwater gets arrested, making the rainwater alkaline,” clarified Safai.

Because of lower centralization of residue and contamination levels upheld by low populace thickness when contrasted with the metropolitan area, water gathered at Sinhagad was artificially more extravagant. Higher measures of precipitation implied that it cleans out more noteworthy degrees of contaminations.

Though in Pashan, even with more significant levels of anthropogenic exercises and contamination, the neighborhood dust particles keep the water near basic limit levels. The specialists additionally followed the contributory air masses which brought precipitation during the rainstorm over the two areas.

“74 per cent of the rain events in Pune and 65 per cent of rain events recorded over Sinhagad were triggered by oceanic air masses brought in from the Arabian Sea,” the study noted.

Sinhagad remains an end of the week escape for Pune inhabitants because of the district’s picturesque magnificence, the traveling locale and Sinhagad Fort. In spite of being at a higher elevation, the developing human exercises, including the travel industry and development, will contribute towards long haul air changes over Sinhagad, which could reflect in water sythesis, the researchers cautioned.

Disclaimer: The views, suggestions, and opinions expressed here are the sole responsibility of the experts. No Daily Pune journalist was involved in the writing and production of this article.