SF Prep Notes

Winter Fog Experiment (WiFEX) completes 10 years

On 22 July 2025, the Ministry of Earth Sciences said the Winter Fog Experiment (WiFEX), launched in winter 2015 at IGI Airport, New Delhi, had completed ten years.

Summary

The Winter Fog Experiment (WiFEX), launched in the winter of 2015 at Indira Gandhi International Airport, New Delhi, has completed ten years of research into North India's dense winter fog, the Ministry of Earth Sciences said on 22 July 2025. Led by the Indian Institute of Tropical Meteorology (IITM) with support from IMD and NCMRWF, WiFEX is one of the world's few long-term open-field experiments focused solely on fog. Its observation network has expanded to Jewar Airport, Noida, and Hisar, Haryana.

Key facts

Date
22 July 2025
Launched
Winter 2015, IGI Airport, New Delhi
Led by
IITM (MoES), with IMD and NCMRWF
Network
Expanded to Jewar Airport (Noida) and Hisar (Haryana)

Practice MCQs 1 questions

Q1 Advanced

Which institute leads the Winter Fog Experiment (WiFEX), which completed 10 years in 2025?

Show answer

Correct answer: A — Indian Institute of Tropical Meteorology

PIB (22 July 2025): WiFEX is led by the Indian Institute of Tropical Meteorology (IITM) under MoES, with support from IMD and NCMRWF.

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