ScienceDaily (Dec. 31, 2009) — Some studies have suggested that the ability of oceans and plants to absorb carbon dioxide recently may have begun to decline and that the airborne fraction of anthropogenic carbon dioxide emissions is therefore beginning to increase.
To assess whether the airborne fraction is indeed increasing, Wolfgang Knorr of the Department of Earth Sciences at the University of Bristol reanalyzed available atmospheric carbon dioxide and emissions data since 1850 and considers the uncertainties in the data.
In contradiction to some recent studies, he finds that the airborne fraction of carbon dioxide has not increased either during the past 150 years or during the most recent five decades.
Originally posted by mirageofdeceit
reply to post by melatonin
Dude - you know what a lack of increase in the fraction means????
It means that despite unailing emissions of "man-made CO2" (I didn't realize we were producing CO2 to release into the atmosphere, but anyway...) our bit of the pie hasn't increased, *EVEN THOUGH IT SHOULD HAVE*.
What is your analysis of its meaning?
It tells me that either our extra bit is being absorbed, or, the natural component of CO2 output is *also* increasing, keeping our part relatively the same.
If the former, it means our emissions of CO2 can not possibly have any effect on climate as it is not in the atmosphere to cause any warming.
If the latter, please explain the natural sources of CO2 that are rising in line with "man-made" sources thus keeping our part the same relative size, and why they are increasing at a relatively equal rate???
Either way, it absolutely screws any argument that we are having an impact on the climate through CO2 emissions.
Originally posted by Doc Velocity
The brief article says exactly what it means — that MMGW fanatics are making claims about CO2 in the atmosphere that can be disproven scientifically... Which is what we knew, anyway.
— Doc Velocity
Atmospheric Carbon Dioxide
Atmospheric carbon dioxide record from Mauna Loa, (2009)
Atmospheric CO2 records from 11 sites in the SIO air sampling network (2009)
Atmospheric Carbon Dioxide Mixing Ratios from the NOAA CMDL Carbon Cycle Cooperative Global Air Sampling Network (2009) NDP-005 - Abstract
Atmospheric carbon dioxide records from sites in the NOAA/CMDL continuous monitoring network, (2009)
Atmospheric CO2 record from continuous measurements at Jubany Station, Antarctica, (2009)
Atmospheric carbon dioxide record from flask measurements at Lampedusa Island, (2001)
Atmospheric CO2 Concentrations--Mauna Loa Observatory, Hawaii, 1958-2003 (revised 2004), NDP-001 - Abstract
Monthly atmospheric CO2 mixing ratios from the NOAA/CMDL network
CSIRO GASLAB Network: Individual Flask Measurements of Atmospheric Trace Gases (2003)
Atmospheric CO2 Concentrations from the CSIRO GASLAB Flask Sampling Network
Atmospheric CO2 from flask air samples at 10 sites in the SIO air sampling network (2004), NDP-001A PDF
Historical atmospheric CO2 record from the extended Vostok ice core, (2003)
Historical CO2 record from the Siple Station ice core, (1997)
Historical atmospheric CO2 records from the Law Dome DE08, DE08-2, and DSS ice cores, (1998)
The Increasing Concentration of Atmospheric CO2 : How Much, When, and Why? (2001)
(Presented at Erice International Seminars on Planetary Emergencies, 26th Session, Erice, Sicily, Italy, 19-24 August 2001.)
AmeriFlux - Carbon Dioxide, Water Vapor, and Energy Balance Measurements
Atmospheric CO2 Concentrations from in situ Measurements at Amsterdam Island, 1980-1995, (1997)
Atmospheric CO2 Concentrations--The Canadian Background Air Pollution Monitoring Network (1993), NDP-034 | Abstract
Atmospheric CO2 Concentrations Derived from Flask Samples Collected at U.S.S.R.-Operated Sampling Sites (1991), NDP-033 | Abstract | PDF
Atmospheric CO2 Concentrations--The CSIRO (Australia) Monitoring Program from Aircraft for 1972-1981 (1984), NDP-007 | Abstract | PDF
Carbon Dioxide Concentrations in Surface Water and the Atmosphere During 1986-1989 NOAA/PMEL Cruises in the Pacific and Indian Oceans (1995), NDP-047 | PDF
Surface Water and Atmospheric Carbon Dioxide and Nitrous Oxide Observations by Shipboard Automated Gas Chromatography: Results from Expeditions Between 1977 and 1990 (1992), NDP-044 | Abstract | PDF
Intergovernmental Panel on Climate Change (IPCC), Working Group 1, 1994: Modelling Results Relating Future Atmospheric CO2 Concentrations to Industrial Emissions (1995), DB1009 | Abstract
Originally posted by Doc Velocity
Originally posted by melatonin
All the study examines is the proportion of human-sourced CO2 absorbed by natural sinks, nothing to to do with the effects of CO2 on climate.
Pardon, but what are the effects of CO2 on the climate? MMGW fanatics have tried to draw a correlation between atmospheric CO2 content and the ambient temperature of the Earth. But there is no correlation with a demonstrable precedent.
The planet Mars presently has a 95% CO2 atmosphere, yet there is no apparent effect on its ambient temperature, which hovers around ±0°F on average, even though we know Mars supported a much warmer climate in the distant past.
Your answer will be Mars is farther away from the Sun... Which means you acknowledge that proximity to the Sun is a far more significant factor than atmospheric CO2 content in regard to climate change.
The Earth aint broke and does not need "fixing" — what we do know is that Mankind has never "fixed" anything about the Terran environment. To presume we can fix something that we cannot even properly analyze scientifically is almost as preposterous as presuming we have analyzed it properly.
Which we haven't.
That's the import of this little article — that there is MORE science that needs consideration before we leap to "fixing" a climate that isn't broken.
— Doc Velocity
ScienceDaily (Dec. 31, 2009)
Many climate models also assume that the airborne fraction will increase.
