Increase in atmospheric carbon dioxide concentration from 1850s till 2008
| Range | 280-385 ppm |
|---|---|
| Organism | Biosphere |
| Reference | Two sources for two different periods:(1) 1832-1978 D.M. Etheridge et al, Historical CO2 record derived from a spline fit (20 year cutoff) of the Law Dome DE08 and DE08-2 ice cores, Division of Atmospheric Research, CSIRO, Aspendale, Victoria, Australia, link-http://tinyurl.com/ly4baa (2) 1959-2008 Keeling et al, Atmospheric CO2 values (ppmv) derived from in situ air samples collected at Mauna Loa, Hawaii, USA, Carbon Dioxide Research Group Scripps Institution of Oceanography (SIO) University of California La Jolla, California USA link - link |
| Method | Measurements from 1832-1978 CO2 record derived from a spline fit (20 year cutoff) of the Law Dome DE08 and DE08-2 ice cores, 1979-2008: Atmospheric CO2 values (ppmv) derived from in situ air samples collected at Mauna Loa, Hawaii, USA |
| Comments | The increase in atmospheric CO2 concentrations from ~280 to ~370 ppm since the 1850s, should improve Water use efficiency of photosynthesis in most plant species by increasing the ratio of CO2 fixed to water lost via evapotranspiration. |
| Entered by | Uri M |
| ID | 104577 |