Climate Change (Class Project)

Topics: Climate, Earth, Climate change Pages: 3 (980 words) Published: January 14, 2013

Let’s first begin with “what is climate change?” – it is a significant and lasting change in the statistical distribution of weather patterns over periods of decades to millions of years [1]. Climate change is caused by several factors [2]:

* Internal forcing mechanism (Natural processes of the climate system itself) * Ocean variability
* External forcing mechanism (A process that alters the balance of the climate system [3]) * Orbital variation
* Solar variation
* Volcanism
* Plate tectonics
* Human influences
Since the formation of Earth, our planet’s climate had been constantly evolving and changing, some are stable natural processes, leaving no serious bad impacts, while some changes are by external forces, that distorts the balance of the climate system, affecting negatively on the Earth’s geo-spheres, damaging the ecosystem, threatening our lives,… The best example of External Forces is us – the influences of our species have affected most on the climate among all of the above factors. The average temperature of the Earth’s surface over periods of 50 years is rising. Global warming [4] – a direct consequence of the Climate Change is currently a serious international concern. The “credit” for the “greatest contribution” to this problem belongs to human! Global warming is the rise of Earth’s average temperature over periods of decades, since the late 19th Century, which is rising fast and still accelerating. Global Warming leads to many consequences, for now, the most concerned one is the melting of the Polar Ice caps, eventually leading to rising of sea level, extinction of Polar species,… and countless of other problems. So how is mankind responsible for Global Warming? First we will answer what is the source of Global Warming? - Green house gases! They form a “shield” in the atmosphere, trapping the heat that Earth absorbs from the sun, making the Earth gain more heat than it loses, leading to Global...
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