Atmospheric Effect – A Global Hazard

NSSIHSNENRM-2019 | Special Issue | Jan-2019 | Published Online: 25 January 2019    PDF ( 247 KB )
Author(s)
Dr. S.B. Ronald 1; Dr. PSNH Ramachandra Rao 2; Dr. B. Ananda Kumar 3

1Department of Chemistry, Sri Y.N.College, Narsapur -534275 (India)

2Department of Chemistry, Sri Y.N.College, Narsapur -534275 (India)

3Department of Chemistry, Sri Y.N.College, Narsapur -534275 (India)

Abstract

Carbon dioxide is a natural constituent of atmosphere, but now its concentration is increasing at an alarming rate. According to an estimate, carbon dioxide level rose from 280 ppm to 320 ppm in the troposphere over the period 1870 to 1970. The atmospheric concentration of carbon dioxide has risen by almost 30 per cent since the Industrial Revolution. Both the current concentration of about 379 parts per million (ppm) – compared with 280 ppm in the pre-industrial era – and the current rate of increase is approximately 2 ppm per annum. Recent evidence revealing on almost a weekly basis to link rises in man-made carbon dioxide in the atmosphere with the real and immediate threat that Global climate change presents to our environment, people and communities. Arctic climate impacts assessment warned that Arctic temperature have risen by almost twice the global average over the past 50 years. This increase looks set to continue, with a further rise of between 4C and 7C possible by 2100AD. The Greenland ice sheet was retreating at a rate of around one metre a year in 2001, according to NASA study. The latest study indicates it is moving back at about 10 metres a year. If the Greenland ice sheet were to melt, the sea level would rise by between six and seven metres. That would create a major problem for coastal cities. The time is right for action, and it must be taken quickly. We have the technologies to deal with this or the scope to develop them. Action is affordable. Inaction is not. The Kyoto protocol which was accepted by the 55 developed and developing nations is going to come to force from the month of February 2005 will do much to re-invigorate the international climate change process. The good news is that we now understand what is happening and therefore what we must do to address this. Recently 196 countries in the world on April 22nd 2015 signed on Paris agreement in UNO to reduce Green house gas emissions drastically.

Keywords
Kyoto protocol, Paris agreement, Arctic climate impacts, Global climate change
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