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Winter fog experiment over the Indo-Gangetic plains of India

Ghude, Sachin D and Bhat, GS and Prabhakaran, Thara and Jenamani, RK and Chate, DM and Safai, PD and Karipot, AK and Konwar, M and Pithani, Prakash and Sinha, V and Rao, PSP and Dixit, SA and Tiwari, S and Todekar, K and Varpe, S and Srivastava, AK and Bisht, DS and Murugavel, P and Ali, Kaushar and Mina, Usha and Dharua, M and Rao, Jaya Y and Padmakumari, B and Hazra, A and Nigam, N and Shende, U and Lal, DM and Chandra, BP and Mishra, AK and Kumar, A and Hakkim, H and Pawar, H and Acharja, P and Kulkarni, Rachana and Subharthi, C and Balaji, B and Varghese, M and Bera, S and Rajeevan, M (2017) Winter fog experiment over the Indo-Gangetic plains of India. In: CURRENT SCIENCE, 112 (4). pp. 767-784.

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Official URL: http://dx.doi.org/10.18520/cs/v112/i04/767-784

Abstract

The objectives of the Winter Fog Experiment (WIFEX) over the Indo-Gangetic Plains of India are to develop better now-casting and forecasting of winter fog on various time-and spatial scales. Maximum fog occurrence over northwest India is about 48 days (visibility <1000 m) per year, and it occurs mostly during the December-February time-period. The physical and chemical characteristics of fog, meteorological factors responsible for its genesis, sustenance, intensity and dissipation are poorly understood. Improved understanding on the above aspects is required to develop reliable forecasting models and observational techniques for accurate prediction of the fog events. Extensive sets of comprehensive ground-based instrumentation were deployed at the Indira Gandhi International Airport, New Delhi. Major in situ sensors were deployed to measure surface micrometeorological conditions, radiation balance, turbulence, thermodynamical structure of the surface layer, fog droplet and aerosol microphysics, aerosol optical properties, and aerosol and fog water chemistry to describe the complete environmental conditions under which fog develops. In addition, Weather Forecasting Model coupled with chemistry is planned for fog prediction at a spatial resolution of 2 km. The present study provides an introductory overview of the winter fog field campaign with its unique instrumentation.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the INDIAN ACAD SCIENCES, C V RAMAN AVENUE, SADASHIVANAGAR, P B #8005, BANGALORE 560 080, INDIA
Department/Centre: Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Others
Depositing User: Id for Latest eprints
Date Deposited: 20 May 2017 03:56
Last Modified: 25 Feb 2019 12:21
URI: http://eprints.iisc.ac.in/id/eprint/56695

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