June 15, 2017

Thanks to warming winters and thawing permafrost, Arctic soil microbes are churning out carbon dioxide well after the end of the growing season ends. This extra source of atmospheric carbon may accelerate a regional warming trend that is already twice as fast as the global average. 

August 2, 2016

A record-smashing hurricane season in the central North Pacific. Water rationing in Puerto Rico. The biggest one-year jump in atmospheric carbon dioxide concentrations. These and more of 2015's extreme events had one thing in common: El Niño.

July 15, 2015

Scientists estimated global average carbon dioxide concentration at 397.2 parts per million (ppm) in 2014, as the global growth rate of carbon dioxide continues to accelerate. 

April 27, 2015

Charles Keeling's measurements of carbon dioxide from the summit of Mauna Loa have become a landmark for mankind’s impact on the Earth. In this video, NOAA scientists talk about the history of the observations that allow us to connect Earth's warming climate to the greenhouse gases from burning fossil fuels.

August 2, 2016

Every year hundreds of scientists from scores of countries team up to give the Earth's climate a comprehensive physical. Edited by NOAA scientists and published by the American Meteorological Society, the State of the Climate in 2015 draws on tens of thousands of observations of everything from forest fires to fish migration to catalog climate variability and change.

January 24, 2014

Concentration of carbon dioxide is about 1.4 times what it was before the Industrial Revolution. How much and how fast will Earth warm if carbon dioxide concentrations double the pre-industrial?

March 6, 2012


It is virtually certain our world will continue to warm over this century and beyond. The exact amount of warming that will occur in the coming century depends largely on the energy choices that we make now and in the next few decades.
July 19, 2017

As of 2016, the warming effect of long-lived greenhouse gases in Earth's atmosphere had increased by approximately 40% compared to 1990.