Climate Change: Global Emissions of Green House Gases Essay -- Environ

There be growing concerns about humor change and the marrow of greenhouse gases (GHG) on the gradual increase in world temperatures everyplace time, now commonly known as worldwide warming. The greenhouse effect means that greenhouse gases such as weewee vapour (H2O), carbon dioxide (CO2), methane, nitrous oxide, and fluorocarbons insulate the Earth by riveting heat from the Earths surface and reflecting it confirm into the atmosphere, acting in a similar way to a thermal blanket (Houghton, 2005). Although associated in recent times with pollution and climate change, the greenhouse effect is necessary for the continuity of the Earths climate (Karl and Trenberth, 2003). However, since the beginning of the Industrial renewing (from the 18th to the 19th Century), the burning of fossil fuel meant that the greenhouse effect went from simply protecting the Earths climate to causing an veridical increase in world temperatures (Martinez, 2005 Houghton, 2005). The gaseous culprit i s the seemingly unacquainted(p) CO2, although harmless in the right atmospheric proportions, it is nevertheless a truly powerful insulator and heat reflector (Houghton, 2005). Since 1750, the concentration of CO2 has change magnitude by over 30% and is now at a higher(prenominal) level than it has been for thousands of years (Martinez, 2005 EPA, 2007). In fact, it is argued that if no action is taken to qualify these emissions, then the concentration of CO2 will rise throughout the difference of this carbon to two or three times its preindustrial level (Houghton, 2005). The scientific evidence on global warming dates as far back as the second half of the 19th Century and the work of physicist prank Tyndall and chemist Svente Arrhenius. It was particularly accelerated in the past 20... ...add around 7 meters to the worlds sea level (Gregory et al., 2004), with extremely damaging results for valet and the ecosystem (Houghton, 2005). Global emissions of CO2 to the atmosphere f rom fossil fuel burning are approaching 7 billion tonnes of CO2 per annum and are rising cursorily (Houghton, 2005 Stern, 2006). In fact, energy related emissions are forecasted to grow by over 2% per year over the next 30 years, if the world residential area continue with business as usual (Stern, 2006). However, emissions during the 21st century must(prenominal) be reduced to a fraction of their present levels before the centurys end in order to stabilize CO2 concentrations (Houghton, 2005 Stern, 2006). impelling responses require collective action (Stern, 2006) and global efforts are needed to make grow global solutions to overcome these global problems (Houghton, 2005, Stern, 2006).