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Rising over decades are average air temperature, the ratio of water vapor to air, ocean heat content, sea surface temperature, sea level, air temperature over the ocean and air temperature over land.

Indicators that are declining are snow cover, glaciers and sea ice.

The 10 were selected “because they were the most obviously related indicators of global temperature,” explained Peter Thorne of the Cooperative Institute for Climate and Satellites, who helped develop the list when at the British weather service, known as the Met Office.

“What this data is doing is, it is screaming that the world is warming,” Thorne concluded.

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Online

http://www.ncdc.noaa.gov/bams-state-of-the-climate