Glaciers are formed when snow, compressed into large thickness of crystalline ice mass, develops an ability to move due to sheer mass. These glaciers together with snow and ice constitute the cryosphere which covers nearly 10 per cent of the surface of the earth (NSIDC, undated). The major part of ice and glaciers is found […]
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Antarctic is known for being earth’s largest single mass of ice. It covers almost 14 million sq km and holds around 61 per cent of earth’s freshwater. However, wide networks of canyons, waterways and lakes that have been discovered buried under the ice sheet have captured the interest of people and are now the focus […]
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Stratospheric ozone Arctic Ozone Depletion and Impact on Climate Change A study which examined the Arctic ozone depletion at eight stations in the Arctic stipulates that the Arctic stratospheric ozone recovery, predicted for the mid 2030s, might be significantly delayed (Pommereau, 2018). The study observed that the 2015-2016 ozone depletion is the third largest reported […]
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The discovery of ozone (O3) in the troposphere was first made in the 1840’s. Consequently, an intensive study about its distribution was made in the latter part of the nineteenth century due to its supposed health-giving properties as a germicide (Schönbein, 1840). The first classical explanation of ozone in the troposphere was that it was […]
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Cooling is associated with economic growth, health, wellbeing and productivity of people in hot climates. The growing economy of India is characterised by rising per capita income, rapid urbanisation and increasing heat waves. Yet, the country is marked by low penetration of air-conditioning. Given the situation, addressing the rising cooling requirement is both a challenge […]
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The gradual thinning of earth’s ozone layer in the upper atmosphere caused by the release of chemical compounds from human activities and adverse impact of UV rays on various components of the environment was confirmed by scientists during 1974. The first international action was initiated in March 1977 and experts from 32 countries met in […]
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Total column ozone is the total amount of ozone in a column extending vertically from the earth’s surface to the top of the atmosphere. It is measured using ground-based stations and satellites and is reported in Dobson units (DU). The ozone hole is defined in terms of reduced total column ozone—less than 220 DU. Stratospheric […]
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For the last few years, the onset of winter in Delhi is being regarded with dread. The city is enveloped in a thick blanket of pollutants that deteriorate air quality to hazardous levels, posing grave threats to human health. This phenomenon disrupts daily activities in the city as worsening pollution levels restricts outdoor movement; even […]
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The Aravalli mountain range stretches from Gujarat in the southwest to Delhi in the northeast for about 700 km and sculpts the topography of eastern Rajasthan and adjoining parts of Haryana and Delhi, creating a picturesque backdrop for flourishing settlements, with its highest point at Guru Shikhar on Mount Abu in Rajasthan. At this point, […]
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India conducts fair and democratic elections, where voters exercise free will through constitutionally mandated universal adult suffrage. Voting behaviour and its Voter turnout is closely linked with the attitude of the populace towards voting. It is therefore imperative to understand how the masses respond to voting, which could serve as an impactful indicator to how […]
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