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How the Climate System Works
Department:March 15, 2021Temperatures measured on land and at sea for more than a century show that Earth's globally averaged surface temperature is rising.
Department:January 25, 2021Sea level has risen 8-9 inches since 1880, and the rate is accelerating thanks to glacier and ice sheet melt.
Department:August 14, 2020Human activities, mainly burning fossil fuels, are increasing the amount of carbon dioxide in our atmosphere, amplifying the natural greenhouse effect and making the pH of the ocean more acidic.
Department:August 30, 2009The Arctic Oscillation (AO) refers to an atmospheric circulation pattern over the mid-to-high latitudes of the Northern Hemisphere. The most obvious reflection of the phase of this oscillation is the north-to-south location of the storm-steering, mid-latitude jet stream.
Department:August 30, 2009Over the span of days or weeks, the strength of surface air pressure over the North Atlantic seesaws between Iceland and the Azores Islands. The shifting pressure reflects changes in atmospheric circulation that have a big impact on mid-latitude weather in the U.S. and Europe.
Department:August 30, 2009The Oceanic Nino Index tracks the sea surface temperature in the east-central tropical Pacific Ocean. It is NOAA's primary indicator of the climate patterns known as El Niño and La Niña.
Department:January 15, 2009NOAA's Susan Solomon was awarded the 2009 Volvo Environment Prize for her pioneering contributions in atmospheric chemistry and physics.
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