The United Nations' weather agencysays 2010 was one of the warmest yearson record,
providing further evidence thatthe planet is slowly but surely heating
(無(wú)法處理)up.
The World Meteorological Organization says globalaverage temperatures last year
were just over half a degreeCelsius higher than the 1961~1990 period, slightly abovethe
temperature of 2005, and a little higher again over thatof 1998, which were previously
two of the top threewarmest years on record.
Michel Jarraud, an official in the World MeteorologicalOrganization, said, "We can
indeed report that 2010 is nowgoing to rank as the warmest year on record at the same
level as 2005 and 1998. "
The ten warmest years after records began in 1854 haveall occurred since 1998. Rising
global temperatures over the last century arecausing climate experts to worry.
The Geneva-based global weather agency says that lastyear's extreme weather-notably
the heat wave in Russiaand monsoon(季風(fēng),雨季)flooding in Pakistan--hascontinued into
the new year.
Michel Jarraud also said, "What we can say is that withglobal warming some of these
events will become morefrequent or more intense. "
The UN agency contributes the extreme weatherpatterns to El Nino and La Nina,
which constantlydominated the world climate in 2010, bringing warm effectsand cooling
effects respectively.
Apart from extreme weather conditions, the WM() alsonoticed further melting of Arctic
sea-ice.ln December 2010,ice cover around the region registered its lowest level, 1. 35million
square kilometers below the 1979-2000 Decemberaverage.
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