How Global Warming Works
Global warming is the increase in the average temperature of the Earth's near-surface air and oceans since the mid-twentieth century and its projected continuation.
The global average air temperature near the Earth's surface rose 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the hundred years ending in 2005..
Climate model projections summarized by the IPCC indicate that average global surface temperature will likely rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the twenty-first century.The range of values results from the use of differing scenarios of future greenhouse gas emissions as well as models with differing climate sensitivity. Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a thousand years even if greenhouse gas levels are stabilized. The delay in reaching equilibrium is a result of the large heat capacity of the oceans.
POINT OF NO RETURN?
Twenty years ago, the scientist James Lovelock work out that the earth possessed a planetery-scale control system which kept the environment fit for life. He called it GAIA… and the theory has become widly accepted.
Now, he believes mankind's abuse of the environment is making that mechanism work against us.His astonishing conclusion that climate change is already insoluble, and life on earth will never be the same." By Michael Mc Carthy, Environment Editor, the independent U.K. pulished 16,January 2006.
Global Warming caused principally by the largescale Emissions of industrial gases such as carbon dioxide (CO2) is almost certainly the greatest threat that mankind has ever faced,because its put a question marked over the very habitability of the Earth.This is the inconvenient truth.
We are already seen change.Glaciers are melting,plants and animals are been forcing from their habitat, and the number of severe storms and droughts is increasing.
The flow of ice from glaciers in Greenland has more than doubled over the past decade.
If the Warming continues, we can except catastrophic consequences.Deaths from Global Warming will double in just 25 years - To 300,000 poeple a year.
In egypyt 1 m (3.3 ft..)of sea level-rise is observed in Meditteranean sea. The Surface Air Temperature increase 1960-2060. Global sea levels could rise by more than 20 feet with the loss of shelf ice in Greenland and Antarctica, devastating, coastal areas worldwide.