On the afternoon of May 23, Alaska set a new statewide record for the earliest day in the year with a temperature in the 90s.

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.

Tuesday, April 14, 2015

While many of us were wrapped up in March Madness this spring, Alaska residents and people across the globe participated in a different kind of competition.

Observations of global temperature going back to 1880 reveal that our planet's temperature is rising. This animation shows maps of yearly temperature compared to the 1981-2010 average from the start of the historical record through 2014--the wamrest year on record. Each year's map is synced with a graph showing the evolution of our planet's temperature as compared to the 20th-century average.

Earth’s surface temperature in 2014 was the warmest on record. Five months set new records for warmth, and a sixth tied for record warmest.

We're nine laps into the race to set a new global annual temperature record. NOAA climate scientist Deke Arndt talks about how this year's race might end--and why yearly rankings tell us less about the big picture of climate change than we might think.

Thursday, May 22, 2014

CarbonTracker is a tool for modelling sources and sinks of carbon dioxide. Users can download the code, carbon dioxide data, and the tool's carbon flux estimates to conduct their own analyses or to help improve the system.

Tuesday, May 6, 2014

It’s only when we “zoom out” to the planet-wide scale that trends in surface temperature are obvious: despite a few, rare areas experiencing cooling, the vast majority of places across the globe are warming.

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