COSEE Ocean Systems: News
Satellite data confirm annual carbon dioxide minimum above 400 ppm
Description: Ice core records show that until the Industrial Revolution, atmospheric CO2 levels remained fairly steady at around 280 ppm. By 1961, CO2 data collected at a monitoring station at the summit of Hawaii's Mauna Loa volcano showed that atmospheric CO2 levels were rising steadily by about 2 ppm per year. Nearly half a century later, in 2005, CO2 concentrations had increased to 380 ppm. Seeing global concentrations above the 400 ppm threshold at a time of year when atmospheric CO2 is typically at its lowest level is a critical turning point. [Source: NASA Climate Change News]
URL: https://climate.nasa.gov/news/2535/satellite-data-confirm-annual-carbon-dioxide-minimum-above-400-ppm/
Availability: Full Text
Source: NASA Climate Change News
Publish Date: 1/31/2017
Reading Level: Basic
Page Length:  

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