Carbon dioxide (CO2) is an important heat-trapping (greenhouse) gas, which is released through human activities such as deforestation and burning fossil fuels, as well as natural processes such as respiration and volcanic eruptions. The first graph shows atmospheric CO2 levels. Of course, this will spark further debate and push-back from folks who really don't want climate change to be our fault. Those who don't believe. CO2 has contributed more than any driver to climate change.
See here for some graphs about the increasing concentration of greenhouse gases and the greenhouse gas emissions by sector. Mitigation goals for the main cause of global warming: For example the European Union EU has committed itself to this threshold already in At the first glance, this does not look like a major reduction.
How do we know more CO2 is causing warming?
However one should keep in mind that the world population will grow from 6. At the same time more and more developing countries will progress their industrialisation and as a result they will want to copy our western life style causing high CO2 emissions.
The world-wide average CO2 emissions by capita was about 4 tons per year in For North America it was about 20 tons and for Europe about 10 tons per year per capita. Bythe world-wide average CO2 emission per capita needs to be reduced to 2 tons per year. In the following years, the emissions will need again to be cut by half. Download and use our Excel calculator to simulate cause and effects of global warming.
What is the relationship between carbon dioxide levels in the atmosphere and global warming?
Based on an average carbon footprint, you can test ways to mitigate global warming yourself. Alternatively, you can have a look at some simulation results how global warming can be stopped below 2 C. Using high-resolution FTIR spectroscopy, we can measure the exact wavelengths of long-wave infrared radiation reaching the ground.
Spectrum of the greenhouse radiation measured at the surface.
Does CO2 always correlate with temperature (and if not, why not?)
Greenhouse effect from water vapour is filtered out, showing the contributions of other greenhouse gases Evans Sure enough, we can see that CO2 is adding considerable warming, along with ozone O3 and methane CH4.
Satellites have recorded the Earth's outbound radiation. We can examine the spectrum of upward long-wave radiation in and to see if there are changes. Change in spectrum from to due to trace gases. This time, we see that during the period when temperatures increased the most, emissions of upward radiation have decreased through radiative trapping at exactly the same wavenumbers as they increased for downward radiation.Top 10 Facts that Prove CO2 Does NOT Drive Global Temperature
The same greenhouse gases are identified: CO2, methane, ozone etc. The Empirical Evidence As temperatures started to rise, scientists became more and more interested in the cause.
Many theories were proposed. All save one have fallen by the wayside, discarded for lack of evidence. One theory alone has stood the test of time, strengthened by experiments. We know CO2 absorbs and re-emits longwave radiation Tyndall. The theory of greenhouse gases predicts that if we increase the proportion of greenhouse gases, more warming will occur Arrhenius.
Scientists have measured the influence of CO2 on both incoming solar energy and outgoing long-wave radiation.