More detailed climatic data have been obtained since 1998 at the Martial Este Glacier, including air temperature, humidity and solar radiation.
Across the United States, the 2011-2012 winter season was the fourth warmest ever recorded, according to the National Climatic Data Center.
Nationwide, more than 4, 500 record-high daily temperatures have been set in the past 30 days, according to the National Climatic Data Center.
Nationwide, there have been more than 4, 500 daily record highs in the last 30 days, according to the National Climatic Data Center.
The worst-hit areas are the southern to central Rockies, the central Plains states and the Ohio Valley, the National Climatic Data Center said.
"I think people are far more interested in CRU's corrections, in homogenisation of data, and far more interested in their paleo-climatic data, " said Dr Jones.
"This past year, unlike the US they were not a record globally but they certainly were warm, " said Thomas Karl, director of Noaa's National Climatic Data Centre.
Between June 24 and Saturday, 1, 928 record-high temperatures were broken or tied nationwide, not including new ones expected from Sunday that still aren't in the National Climatic Data Center's official count.
Our list was compiled with the help of Bert Sperling, who created his Sperling Drought Index by combining a variety of data and indices from the National Climatic Data Center.
The annual average temperature is 54.2 degrees Fahrenheit, and it is ranked the 20th hottest state, according to data collected between 1971 and 2000 by the NOAA National Climatic Data Center.
Deaths from the latest storm ended the nation's longest break between tornado fatalities since detailed records began being kept in 1950, according to the Storm Prediction Center and National Climatic Data Center.
"We're playing in a new neighborhood as far as global temperatures go, compared to even the late 20th century and especially the mid-20th century, " said Deke Arndt, head of monitoring for NOAA's National Climatic Data Center.
The cool-down follows a heat wave that roasted much of the country for more than a week and comes as the National Climatic Data Center reported the mainland United States has experienced the warmest 12 months since record-keeping began in 1895.
Behind the record temperatures was a dome of high pressure over the center of the country, which combined with a powerful drought to create the scorching temperatures, said Jake Crouch, a climate scientist at NOAA's National Climatic Data Center in Asheville, N.
At the same time the National Oceanic and Atmospheric Administration's National Climatic Data Center has released a report noting that this spring in the United States has been the warmest since record-keeping began in 1895, a group of scientists has published a paper in the journal Nature warning that the planet is approaching a critical tipping point because of climate and other factors.
In 2009 leaked e-mails from the university's Climatic Research Unit (CRU) alleged that climate research data was being "manipulated".
An assessment of the impacts of climatic change in Latin America and the Caribbean supported by reliable data suggests that ??climate changes during the last century have included an increase in the surface medium temperature, particularly in medium and high latitudes, and changes in precipitation quantity and intensity in several countries of the Region (Southern Brazil, Paraguay, and Argentina).
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