Der Spiegel reports today that scientists have identified soot (black carbon) as one of the major global warmers out there.
According to Science Journal here, a team of 24 experts led by NASA scientist Drew Shindell looked at 400 emission control measures and identified 14 measures targeting methane and black carbon (BC) emissions that would reduce projected global mean warming.
Recently scientists and activists have been frustrated by the slow progress and dogged reluctance by countries to cap CO2 emissions, which are thought to be causing global warming. So Shindell looked for alternative ways to avert warming. Suddenly, lo and behold, soot (BC) and methane have emerged as major global warming factors. The amount they admit soot and methane contribute to warming is in my view astonishing. The abstract states (emphasis added):
We considered ~400 emission control measures to reduce these pollutants by using current technology and experience. We identified 14 measures targeting methane and BC emissions that reduce projected global mean warming ~0.5°C by 2050.”
This equals the total amount of warming we’ve seen in the last 40 years!
Now scientists are telling us that soot and methane will have the same effect that CO2 is claimed to have had over the last 40 years? Whatever happened to the assertion that man-made CO2 has caused 95% of the warming over the last decades? Obviously CO2 as a driver is seriously getting cut down to size. Throw in the emerging solar effects and there isn’t much left for poor old CO2.
The abstract continues:
This strategy avoids 0.7 to 4.7 million annual premature deaths from outdoor air pollution and increases annual crop yields by 30 to 135 million metric tons due to ozone reductions in 2030 and beyond. Benefits of methane emissions reductions are valued at $700 to $5000 per metric ton, which is well above typical marginal abatement costs (less than $250). The selected controls target different sources and influence climate on shorter time scales than those of carbon dioxide–reduction measures. Implementing both substantially reduces the risks of crossing the 2°C threshold.”
No need to worry any longer about a doubling of CO2 concentrations. Indeed CO2 as a driver and its hypothesized positive feedbacks simply aren’t materializing. We haven’t seen any warming in 15 years. Now scientists are realizing that soot is a big league player.
Der Spiegel writes:
About 3 billion people prepare their meals over open fires that burn wood, dung or coal, and thus emit huge amounts of soot. However attempts to get people in Africa and Asia to get interested in other cooking devices have often proven to be difficult.
Of course it has been difficult. When idiot bureaucrats attempt (and are successful) to slow down progress, people remain poor and all they have left to burn is wood. But if they promote growth, free markets and development so that poor countries can attain western standards of living, then they will be able to afford to burn cleaner fuels like gas and oil. And if someday they should get really rich, they too will be able to afford wind and solar energy.
Ed Caryl told us about soot – months ago! Read here!