New Delhi:
According to an analysis, world pollution can make rain more acidic in cities like Visakhapatnam, Allahabad, Mohanbari (Assam), while dust from Thar can make the rain more alkaline in Jodhpur, Pune and Srinagar, according to an analysis.
The study by India Meteorological Department (IMD) and Indian Tropical Meteorological (IITM), Pune analyzed the pH value – which measures the rainfall or basicness of ten cities in India.
The data recorded at GAW stations from 1987 to 2021 was analyzed.
The findings are published by IMD as ‘Met Monograph’, a comprehensive analysis of a meteorological subject.
The study suggests that atmospheric conditions and local emissions can affect chemistry or rainy pH.
Both acidic and alkaline rain can have toxic effects, affect aquatic and plant life, even the authors of the study stated that “acid rain is currently a major and immediate threat to our region”.
He attributed the acidity in rain in the rainfall for emissions with oil refinery, power plant and fertilizer facility, and that to charge the acidic nature of soil in Mohanbari and particles coming from vegetation.
However, the dust from the Thar desert can combat the acidic nature of rainwater in Jodhpur and Srinagar, which has increased the pH price of rain in these cities, the team said.
Changes in the season-to-season can also play a role, the authors said, as they found that during the dry season the rainfall becomes slightly more acidic than during the wet season.
This is because most of the acidic particles in the air will be washed in the event of the first rainfall, resulting in reduced pH value, the team explained.
However, in most ten cities, rainfall was found to be more acidic over time.
In addition, nitrates were found to be the most prominent charged particles in cities with vehicles and industrial activities, while calcium -charged particles suggested dust and soil effects in Jodhpur, Pune and Srinagar.
“Analysis of rainfall chemistry across India suggests that urbanization and industrialization have a significant impact on rainwater structure,” the authors wrote.
“Stations such as Vizag, Mohanbari and Allahabad demonstrated more acidic Pisces pH values, while Jodhpur and Srinagar had more alkaline values. It suggests variability and rainwater chemistry affects local sources in atmospheric conditions,” he wrote.
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