Tuesday , July 23 2024

Triple deep La Nina changed air quality levels: Research

There are continuous news regarding air quality in India. The weather for the winter of 2022-23 has changed due to La Nina effect due to climate change. According to a recent study, this phenomenon led to improvement in air quality in many parts of North India. However, peninsular India saw an increase in pollution levels. It is noteworthy that events like La Nina have a wide impact on the weather and oceans. This has been said in a study conducted by a team of scientists led by Professor Gurfan Baig, Chairman of the National Institute of Advanced Studies. According to a recent study, apart from local emissions, rapidly changing climate is another factor affecting air quality. The research found that air quality worsened in peninsular Indian cities in the winter of 2022–23, but air quality improved in northern India, contrary to trends seen in recent decades.

The findings of the study have been published in 'Elsevier Journal'. Air quality in many cities of North India has reached the five-year target set under the National Clean Air Program in a very short time. Researchers say why this happened is a mystery. Meteorologist at the Indian Institute of Tropical Meteorology and study co-author R. H. Kripalani said that air quality has improved in North Indian cities, while on the contrary, air quality has deteriorated in many Peninsular Indian cities. The winter of 2022–23 occurred during the final phase of unusual triple-deep La Niña seasonal activity. This is the first time in the 21st century. This seasonal activity greatly influenced air flow under the influence of climate change, which played an important role in preventing the accumulation of pollutants and improving air quality in North Indian cities.

Improvement in air quality level in Ghaziabad-Noida

According to the latest report, the effect of La Nina was seen in many cities of North India. In terms of air quality, Ghaziabad city in UP saw the highest improvement of 33 per cent after the incident, while Noida and Rohtak saw improvement of 28 per cent and 30 per cent respectively. However, only 10 percent improvement in air quality has been seen in Delhi, the main reason for which is said to be Delhi being surrounded by land on all sides. The air quality in peninsular cities of India has deteriorated. Mumbai, considered the financial capital of the country, is also not untouched by this.