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Studies Suggest Increase In Extreme Rainfall Events, Rising Trend Of Black Carbon Concentration In Northeast

An analysis of the rainfall data of the India Meteorological Department (IMD) shows an increase in extreme rainfall events over parts of northeast India

Black carbon is mainly produced by anthropogenic activities as a result of the incomplete combustion of fossil fuels, biofuels and biomass

New Delhi: IMD data shows an increase in extreme rainfall events in parts of northeast India and studies at North Eastern Space Application Centre suggest a mild rising trend of black carbon concentration over the region but no specific study has been carried out on the relation between the two, the Union Environment Ministry said on Thursday (December 8)

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Union Minister of State for Environment Ashwini Kumar Choubey told the Rajya Sabha that aerosols including black carbon influence the cloud formation and the rainfall pattern.

A recent paper published by IIT-Guwahati in the Journal of Atmospheric Research (April, 2022) mentions that rising black carbon emissions is leading to suppression of lower intensity rainfall and increasing heavy rain in the pre-monsoon season in the Northeast region, he said in response to a question asked by Trinamool Congress MP Derek O’Brien.But the conclusions of this study are based on only 10 days of model simulations, the minister added.

An analysis of the rainfall data of the India Meteorological Department (IMD) shows an increase in extreme rainfall events over parts of northeast India, he said.

The Indian Space Research Organization is operating a network of aerosol observatories under ISRO Geosphere Biosphere Programme, with black carbon mass concentration being one of the important parameters being measured, Choubey informed the Upper House.

The long-term measurements of black carbon over the Indian region from the aforesaid regional network of aerosol observatories clearly showed a decreasing trend (0.24 microgram per cubic meter per year) in the past decade, he said.

The studies at North Eastern Space Application Centre using available data from foreign sources suggest a mild rising trend (0.000531 microgram per cubic meter per year) of black carbon concentration over the North Eastern Region. However, no specific study has been carried out on the relation between black carbon and rainfall, Choubey added. Black carbon is mainly produced by anthropogenic activities as a result of the incomplete combustion of fossil fuels, biofuels and biomass.

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(This story has not been edited by NDTV staff and is published from a syndicated feed.)

NDTV – Dettol have been working towards a clean and healthy India since 2014 via the Banega Swachh India initiative, which is helmed by Campaign Ambassador Amitabh Bachchan. The campaign aims to highlight the inter-dependency of humans and the environment, and of humans on one another with the focus on One Health, One Planet, One Future – Leaving No One Behind. It stresses on the need to take care of, and consider, everyone’s health in India – especially vulnerable communities – the LGBTQ populationindigenous people, India’s different tribes, ethnic and linguistic minorities, people with disabilities, migrants, geographically remote populations, gender and sexual minorities. In wake of the current COVID-19 pandemic, the need for WASH (WaterSanitation and Hygiene) is reaffirmed as handwashing is one of the ways to prevent Coronavirus infection and other diseases. The campaign will continue to raise awareness on the same along with focussing on the importance of nutrition and healthcare for women and children, fight malnutrition, mental wellbeing, self care, science and health, adolescent health & gender awareness. Along with the health of people, the campaign has realised the need to also take care of the health of the eco-system. Our environment is fragile due to human activity, which is not only over-exploiting available resources, but also generating immense pollution as a result of using and extracting those resources. The imbalance has also led to immense biodiversity loss that has caused one of the biggest threats to human survival – climate change. It has now been described as a “code red for humanity.” The campaign will continue to cover issues like air pollutionwaste managementplastic banmanual scavenging and sanitation workers and menstrual hygiene. Banega Swasth India will also be taking forward the dream of Swasth Bharat, the campaign feels that only a Swachh or clean India where toilets are used and open defecation free (ODF) status achieved as part of the Swachh Bharat Abhiyan launched by Prime Minister Narendra Modi in 2014, can eradicate diseases like diahorrea and the country can become a Swasth or healthy India.

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