Posts Tagged ‘Particulates’

Climate models wrong again in ignoring brown carbon from wildfires

August 11, 2014

So much for global warming being settled and the infallibility of incomplete and inadequate climate models.

Climate models generally take the effect of wildfires (brown carbon) on climate to be zero (it is not a parameter that is normally included). Both black and brown carbon particulates are products of incomplete combustion.

A new paper reports on experiments with the combustion of biomass and the brown carbon particulate matter in the smoke:

Saleh et alBrownness of organics in aerosols from biomass burning linked to their black carbon content. Nature Geoscience (2014) doi:10.1038/ngeo2220

The research provides information which can now be included in climate models but since it is a parameter which is not usually included, the obvious conclusion is that for any given level of warming some other effect (most likely that of man-made emissions of carbon dioxide) has been overestimated in the models.

But it is not the obvious conclusion that makes the headlines. Instead it is the ridiculous and alarmist statement that Forest fires can heat the climate that is the headline that Swedish Radio (which is about as orthodox as they come) chooses to lead with. They would clearly like to project the picture of a greater threat and not that of inadequate climate models.

Abstract: …. Here we present smog chamber experiments to characterize the effective absorptivity of organic aerosol from biomass burning under a range of conditions. We show that brown carbon in emissions from biomass burning is associated mostly with organic compounds of extremely low volatility. In addition, we find that the effective absorptivity of organic aerosol in biomass burning emissions can be parameterized as a function of the ratio of black carbon to organic aerosol, indicating that aerosol absorptivity depends largely on burn conditions, not fuel type. We conclude that brown carbon from biomass burning can be an important factor in aerosol radiative forcing.

The paper claims that brown carbon is a significant factor which must be taken into account and the more significant it is the less significant is man-made carbon dioxide.

EPA particulate experiment subjects warned “.. there is the possibility you may die from this…”

October 5, 2012

I am amazed.

I would not have thought it possible that for whatever the ends a government agency could justify such means.

JunkScience carries a report today:

EPA admits to Court: Human subjects ‘may die’ from air pollution experiments

EPA has admitted to a federal court that it asks human guinea pigs to sacrifice their lives for regulatory purposes — and $12 per hour.

EPA has responded to our emergency motion for a temporary restraining order (TRO) against its ongoing human experiment (called “CAPTAIN”) involving the air pollutant known as PM2.5.

In the declaration of Martin W. Case, the EPA clinical research studies coordinator for CAPTAIN, Case claims he verbally warns study subjects before the experiment as follows:

… My first approach after being introduced to the subject by the medical station staff is to ask the subject if they have read the consent form. The subjects for CAPTAIN have been given the informed study consent form on a previous visit, and, they are also given the same consent to read again if they have not read the consent the day of the training…

I provide participants with information about fine particles (PM2.s). I say that PM2.s are particles so small that they are able past through your airways and go deep into your lungs, these particles are so small that your usual lining and cilia of your airways are not able to prevent these particles from passing into your lungs, Therefore, if you are a person that for example lives in a large city like Los Angeles or New York, and it’s been a very hot day, and you can see the haze in the air, and you happen to be someone that works outside, and if you have an underlying unknown health condition, or, you may be older in age; the chances are that you could end up in the emergency room later on that night, wondering what’s wrong, possibly having cardiac changes that could lead to a heart attack; there is the possibility you may die from this


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