Posted on August 22, 2008 in Latest News
Everyone is concerned about the complications and consequences of global warming but, the actual scenario tells that 2008 will be the coldest year in the 21st century. This future forecast report suggests an effect which causes an unusual climate change in 2008. No one predicts the impact of this unusual cold effect till time, but the scientists feel it may reduce the impact of global warming.
The Source Says:
According to the United Kingdom Metereological Office, because of the La Nina effect in the western Pacific Ocean, this year will be the coldest than the past 7 years. They also said that the La Nina effect has faded recently, so there are more chances to the reduction of the effect on the coming years’ temperatures.
What is the La Nina Effect?
La Nina effect can be defined as a fall in average sea-surface temperatures to more than 0.4 degrees centigrade below normal, for at least six months, in a particular region of the eastern tropical Pacific.
La Nina Effect in Storm Development:
When the effect arises, the hurricane season is affected as the cooling water produces drastic changes in the upper-level air currents that play a predominant role in the development of storm.
Another natural cycle, the Atlantic Multidecadal Oscillation (AMO), is expected to set the world steady in terms of temperatures in the next decade before global warming pushes our globe into an unusual warmth.
What is the Atlantic Multidecadal Oscillation (AMO)?
The AMO is a hypothesised mode of natual variablity which occurs in the North Atlantic Ocean. It has its principle expression in the sea-surface temperature scene. While it has many supporting models and historical observations, controversy exists with its amplitude, and more particularly the attribution of sea-surface temparatures in the tropical Atlantic areas that are very crucial in storm development.
If the predictions made by the scientists on AMO are correct, there is a lot of scope to store away the excessive planetary heat somewhere, unless the heat coming out from the Sun is decreasing rather than increasing or the heat being grasped by the earth is decreasing because of the earth’s reflectivity.
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