
Each of the last three decades was warmer than all earlier decades in the instrumental record, and each set a new and statistically significant record, culminating in the 2000s, which was the warmest decade of all.

State of the Climate in 2009
July 28, 2010

At the highest point atop the Greenland Ice Sheet, Matthew Shupe and his colleagues are installing a suite of climate and weather instruments. Their goal is to better understand the role of clouds in the rapid warming observed across the Arctic region.

Will ocean currents carry oil and byproducts from the Deepwater Horizon wellhead beyond the Gulf of Mexico and out into the open Atlantic Ocean? Climate data and computer models help scientists predict how and where.
After racing around the pole for the last several months, the polar vortex is ready for a break. Will this break be temporary, or is it done for the season? Read on to find out.
The troposphere, not the stratosphere, can be thanked for the cold weather this week.
The cold air outbreak forecasted for the coming weekend has a stronger hint of a polar vortex connection than the last one.
Is the polar vortex to blame for this recent cold air outbreak? We don’t think so. This seems like a case of the polar vortex getting blamed for being a trouble maker, when it was actually minding its own business.