air temperature
over land		air temperature
over ocean		arctic sea iceglaciersglobal sea levelhumidityocean heat
content		sea surface
temperature		snowtemperature of the
lower atmosphere
TEN SIGNS OF A WARMING WORLD

Air Temperature over Land


Satellites and weather stations on land show that average air temperature at the surface is going up. Consequently, we see an increase in the number of heat wave events and the area affected by drought.

Data Trends

Air Temperature
over LandTime
Series Data Plot

Feature Articles



Drought Baking the Southern United States
An intense drought has gripped the southern tier of the United States for several months, accompanied by destructive wildfires, low water supplies, and failed crops. Dry conditions emerged as early as October of last year…

Videos/Multimedia

Changing Planet:
Withering Crops
This video examines what will happen to crops as Earth's temperature rises and soils dry out because of changing climate. Students learn that a loss of soil moisture causes stress to plants, leading...		 Melting Permafrost
This video is accompanied by supporting materials including background essay and discussion questions. The focus is on changes happening to permafrost in the Arctic landscape, with Alaska Native....		 Changing Planet:
Warming Lakes
The video addresses impact of warming temperatures on major lakes of the world with specific focus on Lake Superior and Lake Tanganyika. It discusses the science of water stratification and its...		 Rocky Mountain Bio Lab: Wildflowers
This video explores the work of environmentalist John Hart, a Professor of Environmental Science at U.C. Berkley. In the Rocky Mountains of Colorado, Dr. Hart has established an experimental...

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These resources come from the CLEAN project, a part of the National Science Digital Library. This collection provides a scientific and education reviewed collection of resources coupled with the tools to enable an online community to share and discuss teaching about climate and energy science. NOAA is a partner in the CLEAN project.
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