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GENEVA - The hole in the ozone layer over Antarctica has already surpassed its 2007 size this year, and is set to keep growing for another few weeks, the UN weather agency said on Tuesday.

The Antarctic ozone hole appears every year and normally stretches to about the size of North America, reaching its maximum size in late September or early October.
But in 2008, the World Meteorological Organisation said the protective layer, which shields the Earth from ultra-violet rays that can cause skin cancer, began to thin relatively late.

Sudha Nambudiri |KOCHI: There is a reason to cheer on the International Ozone Day. The scientists have recorded a perceptible reduction in the ozone depletion levels in the atmosphere.

It is generally believed that the preventive measures taken by the Inter-governmental Panel on Climate Change (IPCC) by cutting down the CFCs emission have had its effect on the atmosphere.

Pune, September 16 The United Nations Environment Programme (UNEP) and Pune Zilla Parishad Secondary School Section will hold a special programme to celebrate the International Day for the Preservation of Ozone Layer on Wednesday.
An educational tool for creating awareness about Ozone depletion and climate change among students will be launched on the occasion.

The international day for the preservation of the ozone layer is being observed on Tuesday with focus on combating the depletion of the earth

AHMEDABAD: Focusing on the harmful effects of ozone layer depletion, the Gujarat Council of Science City (GCSC), Department of Science & Technology, Government of Gujarat will, on Tuesday, organise various activities as a part of Ozone Awareness Programme to mark the 'International Day for Preservation of the Ozone Layer' on Tuesday.

NEW DELHI

The global atmospheric circulation transports energy from the equatorial regions to higher latitudes through a poleward flow of high-energy and -entropy parcels and an equatorward flow of air with lower energy and entropy content. Because of its turbulent nature, this circulation can only be described in some averaged sense.

Molecular chlorine (Cl2) is an important yet poorly understood trace constituent of the lower atmosphere. Although a number of mechanisms have been proposed for the conversion of particle-bound chloride (Cl-) to gas-phase Cl2, the detailed processes involved remain uncertain.

This study examines the annual, seasonal and diurnal variations in the ambient concentrations of ozone at a suburban site of Varanasi, India, during 2002-2006. Prominent seasonal variations in ozone concentrations were recorded. Ozone concentrations were higher during the warmer months.

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