“Exhaled human breath can contain small, elevated concentrations of methane (CH4) and nitrous oxide (N2O), both of which contribute to global warming. “
Disrupting the Borg is expensive and time consuming!
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… Of course … Such won’t be happy until most of us are dead.
Them first…
“This study aims to identify patterns in emissions from individuals that may alter emission estimates in national scale accounting and provide a realistic national emission for the UK in particular.”
Did they take into account the volcanoes emissions (say Pinatubo 1991 emissions alone, according even to the 1991 USGS article** on the subject) and compared them to human’s exhalations ?
More on the volcanoes CO2 emissions and possible discrepancies :
The USGS published an article** in which the authors state that volcanoes emit only 1% of what humans emit and that the 2015 human’s emissions* equals 700 Pinatubo 1991 eruptions. There seems to be a discrepancy between the James Hansen’s article*** and the USGS’s article of a factor of about 18000 :
– The James Hansen’s 2013 article about the CO2 airborne fraction shows the impact of the 1991 Pinatubo eruption on this fraction : a decrease from 60% to 40% in about 1 year,
– this can be done only if the 1991 Pinatubo (and eventually, other natural) CO2 emissions were about 30% of the 1991 total CO2 in the atmosphere (2820 Gt) which equals to 845 Gt, which represents some 26 years of the 2015 humans CO2 emissions*,
– thus, according to the USGS, the 1991 eruption represents 1/700 of their estimated 2015 annual humans emissions*, but if I’m not wrong, an analysis of the James Hansen’s paper shows that this same eruption represents 26 years of the same 2015 humans emissions estimation*, which is 18000 times more than the 1/700 factor found in the USGS publication.
If I’m not wrong, then : Who else is right ?
*2015 emissions from burning fossil fuels :
– actual : 35.5 Gt :
https://ourworldindata.org/co2-and-greenhouse-gas-emissions
– retained value : the estimation of 32.3 Gt in the USGS article, value they used to find the factor 700.
**USGS’s article (from Terrence M. Gerlach) :
https://www.usgs.gov/programs/VHP/volcanoes-can-affect-climate
***James Hansen’s article :
https://iopscience.iop.org/article/10.1088/1748-9326/8/1/011006
These dudes are scratching the bottom of the barrel really really hard to get a tiny drop out of it.
I am amazed that the way bigger emissions of H20 and even CO2 are not considered to be a way bigger part of this nonexistent problem
where every single move of a butterfly wing is supposed to create a storm somewhere.
Some of the sceptics I know have a solution for climate change hoaxers: Breathe in, and then don’t breathe out. No CO2 emissions, problem solved!
First, I don’t trust their calculations, because I have seen so many that are magnitudes off. But if they are right, it makes all of the attempts at reducing fossil fuel use look silly. First they don’t want us to cook, heat ourselves, or drive; next they don’t want us to eat, and now they don’t want us to breath. I suggest that they go to China and suggest population reduction to the government there.
It would be interesting to know how they measure the effluent of a volcanic eruption, both in volume and mixture. How accurate do they think their estimates are, particularly on the volume?
How accurate the measurements are?
Here an example:
Mount Tambora ejected according to Wikipedias
‘Year without Summer’ article at least 100km3 of material,
while the ‘1815 Eruption of Mount Tambora’ ejected 37 -45 km3 material.
So the estimates vary from 10 cubicmiles to 100km3.()they love their round numbers)
This of course does not say much about current measurements (though they claim to know how many grams of volcanic Ash dropped in surrounding areas ),
but they are for sure not shy to throw around with huge numbers with very different results.
It may also be interesting to know that some experts claim that scientists a 100 years ago were too dumb to read thermometers but they absolutely believe in Ash data from 200 years ago(though standards most probably did not exist for super rare events) and tree rings.
Looks like there is a large variance between different calculations. And again, you often wonder whether the authors of the reports get the facts straight when they print the reports. You see it all the time in textbooks, so I wonder whether scientific reports are immune to misprinting the data. I don’t think peer review guarantees that all errors will be caught. I’m not too sure how much incentive peers have to thoroughly examine another’s report in detail, unless they are going to use the data and calculations themselves in further studies.
Fig 2 of the abstract of the article indicates the “importance” of these CH4 and NO2 emissions. It shows the “emission” of our exhaled breath of both gases plus CO2
CO2: roughly 45000 ppm
CH4: roughly 3 ppm
NO2: roughly 0.3 ppm
15000 times more CO2 than CH4. Neglectabel
CO2 is 400 ppm, i.e. 4/10000ths of the atmosphere. 45,000 ppm is 4.5 % and we aren’t anywhere near that.
Perfect for eugenicists – create a problem, make the villain the human population. The Hegelian Dialectic – problem, reaction, solution. We are constantly being played.