Greenhouse gases are trapping a lot of heat in the climate system and most of it is ending up in the ocean.
A look at how El Niño influences global weather patterns.
2014's Arctic sea ice minimum isn’t going to be as low as the record set in 2012, but it will be well below the 1981-2010 average.
September marks the end of winter when the sea ice that surrounds Antarctica swells to its maximum extent.
The Power Dissipation Index for hurricanes has been on the rise since 1970, along with sea surface temperatures.
This season was the least active since 1982 and the sixth-quietest since 1950.
Compared with the median ice cover from 1981-2010, 2013's Arctic sea ice loss comes out to approximately 1.74 times the land area of Texas.
The peak of hurricane & tropical storm activity doesn’t usually come until Sept. 10. And, on average, there tend to be significantly more storms after the peak than before it.