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Published: Thursday 25 July, 2013

michael kors factory outlet handbags michael kors factory outlet handbags 2010 was tied as warmest year on record

According to a preliminary analysis of yearend data released Wednesday, the global average temperature in 2010 topped the 20th century average by 1.12 degrees Fahrenheit.

A moderatetostrong El Nino pattern in the eastern Pacific and a similarly energetic La Nina that followed played key roles in 2010 in setting up conditions that contributed both to temperature and precipitation patterns during the year.

The two patterns alternate over periods of two to seven years in the tropical Pacific. El Nino brings an expanse of warm water from the western Pacific to a region of the ocean off northern South America, while La Nina replaces the warm water with unusually cold water. These swings trigger changes in atmospheric circulation patterns that, while most prominent in the tropics, also affect circulation patters at higher latitudes as well.

But while these natural swings in Earths climate played important roles in shaping seasonal weather patterns, as well as the years globaltemperature ranking, NOAA officials say, so has global warming part michael kors factory outlet handbags icularly over the past 30 to 40 years.

Climate has not stopped warmingThere has been some notion people have put forth that the climate stopped warming in about 2005. This years results show that notion lacks credibility, said David Easterling, who heads the Climatic Data Centers scientific services division. Instead, he says, the yearend analysis reinforces the notion that were seeing an influence on the climate by greenhouse gases.

That might seem counterintuitive to residents of the US South, for instance, who are still thawing out from heavy snows. But researchers caution against confusing a seasonal storm with climate, which is a decade to centurieslong average of temperature, precipitation, and other atmospheric conditions.

Climate change is a global phenomenon and a longterm phenomenon, Dr. Easterling explains. Unusually cold temperatures, such as those the Eastern US has experienced over the past two winters, merely reflect natural variations that are superimposed on the muc michael kors factory outlet handbags hlongerterm warming trend. Global climate changing or relatively stable encompasses much more in time and space than a winter Noreaster burying New England under a foot or more of snow.

D michael kors factory outlet handbags ata for 2010 also revealed a warm and wet year on average for the continental United States, according to the data centers analysis.

Heavy snow in the East last February and record warmth in the summer along the southeast and into New England were two fairly remarkable events, said Derek Arndt, who heads the centers climate monitoring branch.

Extra precipitation had benefitsRain and snowfall over the US in 2010 topped the longterm precipitation average by 1.02 inches, while 2010 marked the 14th consecutive year when the average annual temperature topped the longterm average.

That extra precipitation provided some tangible benefits, reducing the extent of areas experiencing drought to roughly 8 percent of the country by July. At the same time the moisture contributed to fewer wildfires. By fall, however, drought conditions began to expand into the South.

So far, the average annual temperature in the US has been rising about 0.12 degrees F per decade since 1895, while precipitation has been rising by around 0.18 inches a decade. michael kors factory outlet handbags