Atmospheric carbon dioxide variations at Mauna Loa Observatory, Hawaii

Abstract

The concentration of atmospheric carbon dioxide at Mauna Loa Observatory, Hawaii is reported for eight years (1964)(1965)(1966)(1967)(1968)(1969)(1970)(1971)) of a long term program to document the effects of the combustion of coal, petroleum, and natural gas on the distribution of CO, in the atmosphere. The new data, when combined with earlier data, indicate that the annual average CO, concentration rose 3.4 ' % between 1959 and 1971. The rate of rise, however, has not been steady. In the mid-1960's it declined. Recently i t has accelerated. Similar changes in rate have been observed at the South Pole and are evidently a global phenomenon.

Analysis of trends in fused AVHRR and MODIS NDVI data for 1982–2006: Indication for a CO2 fertilization effect in global vegetation

“…[9] Monthly atmospheric CO 2 concentrations for 1958-2006 [Keeling et al, 1976;Thoning et al, 1989] are extended back in time with the annual CO 2 records from the Law Dome DE08, DE08-2, and DSS ice cores [Etheridge et al, 2001]. The mean seasonal cycle for the first 4 years of the Mauna Loa record minus overall mean was added to the annual Law Dome ice core data to obtain monthly varying estimates of atmospheric CO 2 concentrations for 1901-1957.…”

Regional Δ14C patterns and fossil fuel derived CO2 distribution in the Beijing area using annual plants

“…In 1957, the first measurement of atmospheric CO 2 concentration was undertaken by Mauna Loa Observatory, Hawaii, US [2] Measurements of atmospheric CO 2 then spread around the world because of the actions of the World Meteorological Organization (WMO) and the US National Oceanic and Atmospheric Administration (NOAA) in establishing a global air sampling network. At the same time, many countries independently initiated similar research [3,4].…”

Global change: state of the science

“…Fig. 6 shows that the annually averaged concentration of CO 2 in the atmosphere has risen from 316 ppmv in 1959 to 364 ppmv in 1997 (Keeling and Whorf, 1998). The CO 2 measurements exhibit a seasonal cycle, which is mainly caused by the seasonal uptake and release of atmospheric CO 2 by terrestrial ecosystems.…”

“…Accurate measurements of atmospheric CO 2 concentration began in 1958 at the Mauna Loa Observatory in Hawaii (Keeling et al, 1976). Fig.…”