New Delhi, Rainfall attributable to western disturbances in northwest India throughout winter eliminates the necessity for cloud seeding to mitigate air air pollution, the federal government knowledgeable Parliament on Thursday whereas highlighting consultants’ concern over potential adversarial results of chemical substances used on this course of.
Replying to a query within the Rajya Sabha, Union Minister of State for Surroundings Kirti Vardhan Singh mentioned his ministry obtained 4 letters from the Delhi authorities between August 30 and November 19, asking it to think about cloud seeding as an emergency measure to enhance air high quality in Delhi throughout winters.
The minister mentioned knowledgeable opinions had been sought from the India Meteorological Division , the Fee for Air High quality Administration and the Central Air pollution Management Board relating to the feasibility of cloud seeding for synthetic rainfall within the nationwide capital.
Citing the consultants, Singh mentioned, “Winter clouds within the area are primarily fashioned attributable to Western Disturbances , that are short-lived and journey from west to east. When low clouds kind attributable to WDs, they usually end in pure rainfall over northwest India, eliminating the necessity for cloud seeding.”
The consultants informed the ministry that high-altitude clouds, that are usually at elevations above 5-6 km, can’t be seeded attributable to plane limitations.
“Moreover, efficient cloud seeding requires particular cloud circumstances that are usually absent throughout Delhi’s chilly and dry winter months. Even when appropriate clouds had been current, the dry atmospheric layer beneath them may trigger any developed precipitation to evaporate earlier than reaching the floor.
“Moreover, considerations concerning the uncertainties, efficacy, and potential adversarial results of cloud seeding chemical substances stay,” the minister quoted the consultants as saying.
Final 12 months too, the Delhi authorities thought of utilizing cloud seeding in collaboration with IIT-Kanpur to enhance air high quality throughout winter. The purpose was to induce rain to clean away pollution.
Nevertheless, the undertaking obtained delayed as a result of it required permissions from a number of Central authorities businesses, together with the aviation and environmental authorities.
Cloud seeding entails dispersing substances into the air to encourage condensation, leading to precipitation. The most typical substances used for cloud seeding embody silver iodide, potassium iodide and dry ice . These brokers present the nuclei round which water vapour can condense, finally resulting in the formation of rain or snow.
This climate modification approach has been utilised in a number of elements of the world, primarily within the areas experiencing water shortage or drought circumstances.
A number of the nations and states which have employed cloud-seeding expertise embody the US, China, Australia and the UAE. Nevertheless, the effectiveness and environmental affect of cloud seeding stay topics of ongoing analysis.
An IMD official informed PTI earlier that there have been a number of makes an attempt in India on this regard in Telangana, Tamil Nadu and Karnataka. The analysis is ongoing, nevertheless it has not made important progress to date.
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