November 27, 2010
2010 One Of The Warmest Global Temperatures On Record
The U.K. Met Office's Hadley Center said that the global temperature has jumped over the past 160 years, but short-term trends in temperature and sea ice seem to be at odds with each other and needs more research.
The Hadley Center found several factors that indicate a warming world and said 2010 has been one of the warmest years on record.
The report used the work of over 20 institutions around the world and a range of measurements from satellites, weather balloons, weather stations, ocean buoys, ships and field surveys.
The report showed increases in air temperatures above both land and sea, increases in water temperatures and humidity, sea level rises and the shrinking of Arctic sea ice.
"The average temperature over the first decade of the 21st century was significantly warmer than any preceding decade in the instrumental record, stretching back over 160 years," the report said.
The report said that despite variability from year to year a clear trend of increasing global temperature can be seen from the late 1970s onwards at about 0.16 degrees per decade.
"It is clear from the observational evidence across a wide range of indicators that the world is warming," said Matt Palmer, ocean observations specialist at the Met Office.
"As well as a clear increase in air temperature observed above both the land and sea, we see observations which are all consistent with increasing greenhouse gases," he added.
However, short-term trends in temperature and sea ice seem to be at odds with each other. The rate of temperature increases has slowed down throughout the past 10 years, while the level of sea ice has jumped.
The report said that the internal variability of the climate system may be responsible for the recent decrease in the rate of warming.
It also said that changes in solar activity, water vapor, increased aerosol emissions from Asia and changes to the way sea surface temperatures are measured over the past decade could have also attributed to some artificial cooling.
"We expect warming to increase in the next few years ... However, other future external factors, such as volcanic eruptions or changes in solar activity, could prolong the current reduction in warming," the report said.
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