Human Role In Global Warming Essay

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Critically discuss the role of human in global warming and related issues

Introduction
Over the recent past, whenever there has been a mention of environment or issues related to it, the concept of global warming and climate change commonly came up. With growing industrialisation and human population, global warming has become a topic that has gained global attention. Emphasis on the global environment began in the year 1972 with the conference of the United Nations on the Human Environment in Stockholm; which led to the development of United Nations Environmental Programme (UNEP) (Aucamp, 2005). The Intergovernmental Panel on Climate Change (IPCC) defines climate change as a change in climate caused either due to natural influences or induced
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Climate change can also be defined as a change in global temperatures for extended durations (Maqbool, 2013). The health and survival of humans and ecosystems on the Earth depends on the world’s climate (McMichael, 2003). King (2004) believed that climate change is a threat to human civilisation (Gill et al., 2009, p.324).

Global warming, its consequences and human intervention
The Earth’s surface temperature worldwide has risen by nearly 0.50C since 1975 (Hansen et al., 1999; Jones et al., 1999; as cited in Hansen et al., 2000, p.9875); and this increase has been attributed to the rising human activities which release GHGs into the Earth’s atmosphere (Hansen et al., 2000). Heating up of the Earth’s surface adds more vapour to the atmosphere which further builds up increases the moisture levels in storms (Meehl et al., 2000, p.433). According to IPCC, greenhouse gases (GHGs) mainly include gases such as water vapour, methane (CH4), carbon dioxide (CO2), nitrous oxide (N2O) and ozone (O3) and they display the ability to absorb and trap heat within the Earth’s atmosphere. This leads to global warming, meaning the warming up of the Earth’s natural atmosphere

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