January 20, 2011 / 1:25 PM / 9 years ago

Factbox: Last decade warmest on record

(Reuters) - The 10 years to 2010 were the warmest since records began in the 19th century, confirming a long-term warming trend, the U.N.’s World Meteorological Organization (WMO) said on Thursday.

In a report saying 2010 had tied with 2005 and 1998 as the warmest year, the WMO also said the years from 2001 to 2010 had averaged 0.45 degrees Celsius (0.83 Fahrenheit) above the 1961-1990 average of 14.0 Celsius (57.20F)

It said the temperature was “the highest ever recorded for a 10-year period since the beginning of instrumental records” and confirmed a “significant long-term warming trend.”

The U.N. says greenhouse gases are nudging up temperatures and stoking climate change such as more heatwaves, floods, mudslides, desertification and rising sea levels.

Most decades in the past century have been warmer than the previous, according to the WMO:

2000-09 14.42 degrees Celsius (57.95F)

1990-99 14.25 C (57.65F)

1980-89 14.09 C (57.36F)

1970-79 13.93 C (57.07F)

1960-69 13.90 C (57.02F)

1950-59 13.85 C (56.93F)

1940-49 13.94 C (57.09F)

1930-39 13.87 C (56.96F)

1920-29 13.72 C (56.69F)

1910-19 13.60 C (56.48F)

1900-09 13.61 C (56.49F)

Compiled by Alister Doyle in Oslo; Editing by Janet Lawrence

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