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Atmospheric Concentrations of CO2 from Mauna Loa, Hawaii

The graphs on this page are generated from data taken from "Trends in Carbon Dioxide" page on the Department of Commerce/National Oceanic and Atmospheric Administration (NOAA) website. The NOAA website presents monthly and weekly atmospheric CO2 concentrations measured at the Mauna Loa Observatory in Hawaii. It offers weekly and monthly data, additional graphs, analysis, descriptions of how the data are collected, and an animation of historical changes in atmospheric CO2.

Mauna Loa constitutes the longest record of direct measurements of CO2 in the atmosphere. The measurents were started by C. David Keeling of the Scripps Institution of Oceanography in March of 1958.

Recent Monthly Average CO2

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The plot above is generated from monthly data taken from the NOAA FTP website. The blue line is the monthly mean CO2 mole fraction determined from daily averages. The black "trend" line represents monthly mean CO2 corrected for the seasonal cycle.

Historical Mauna Loa CO2 Rrecord

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The plot above is generated from monthly data taken from the NOAA FTP website. The blue line is the monthly mean CO2 mole fraction determined from daily averages. The black "trend" line represents monthly mean CO2 corrected for the seasonal cycle.

Reference

Dr. Pieter Tans, NOAA/ESRL (www.esrl.noaa.gov/gmd/ccgg/trends/) and Dr. Ralph Keeling, Scripps Institution of Oceanography (scrippsco2.ucsd.edu/).