Understanding and Forecasting Global Warming Essay

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Total Length: 960 words ( 3 double-spaced pages)

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Global Warming DQs

The determination of human contribution to the observed variations in Earth's climate includes making difficult decisions about the issues of climate systems that vary naturally. This is based on the interactions among different atmosphere parts with other concepts from an underlying concept. The natural variations exist on time scales from different years and decades. Shorter time spans for data records permit performance negotiations while separating systematic changes from human activities including greenhouse gas emissions and production of aerosol particles within natural variations (Victor, 2011).

Various natural climate fluctuations such as seasonal cycles are simple to develop and account for because they occur within well-known and fixed time scales. The alternative natural climate influence such as the El Nino and recurring warmth of ocean waters in tropical Pacific Ocean are difficult to identify within climatic datasets. The concept of warming refrains from occurring at fixed time intervals and time ranging between two and four years (Weart, 2009).

Lastly, the examination of spatial patterns for the forms of climate variation is realized as an anthropogenic signal for global warming with relative and spatial influence on tropical oceans. Therefore, it does not have extensive effects on atmospheric circulation even as the shift consists of warming within tropical west Pacific (Archer, 2011). The element also cools within subtropical as well as east tropical Pacific that enhances existing sea surfaces and temperature differences.

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Question Two

Global warming exists. One of the evidences is that temperatures are increasing. The striking illustrations of global warming trends include scrutiny of data that shows relative and rapid increment of temperature from previous centuries (Weart, 2009). The increase in temperatures transpiring from 1978 has been of particular impact on rates of change are high. Ideally, the same period showed energy levels reaching the surface of the Earth from Sun. The measures were precise to make a conclusion that Earth's warming is not a reference to changes in the Sun.

The second illustration is that the sea levels are gradually rising (Dincer, Midilli, Hepbasli & Karakoc, 2009). The global sea levels were increasing by close to 8 inches in the last century. Such rates of increment are accelerating. The concept of global warming is a causal element in sea-level rise through ocean water expansion through the warming and melting of land-based ice in ice sheets and glaciers. The sea-level rise continues to happen at a faster rate than the scientists anticipate. Projections show that 2-3°F warming will bring about up to three feet sea-level rise in the world by 2100. This will displace 56 million people in the developing countries. The surface seawater pH continues to decrease by 0.2….....

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