re: Coldest days ahead in years....

Thought some of you might find this interesting, as it substantiates the mouse farting in the Superdome analogy. LOL

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The Earth's atmosphere, from surface to the Karman Line (about 62 miles up) is 78% nitrogen, slightly less than 21% oxygen, slightly less than 1% argon, and about 0.039% carbon dioxide, and then very small amounts of a bunch of other gases. And it's measured in what's called "parts per million by volume" or ppmv.

Here's the exact breakdown:
Nitrogen (N2) ----------- 780,840 ppmv (78.084%)
Oxygen (O2) ------------ 209,460 ppmv (20.946%)
Argon (Ar) --------------- 9,340 ppmv (0.9340%)
Carbon dioxide (CO2) --- 397 ppmv (0.0397%)
Neon (Ne) --------------- 18.18 ppmv (0.001818%)
Helium (He) ------------- 5.24 ppmv (0.000524%)
Methane (CH4) ---------- 1.79 ppmv (0.000179%)
Krypton (Kr) ------------- 1.14 ppmv (0.000114%)
Hydrogen (H2) ---------- 0.55 ppmv (0.000055%)
Nitrous oxide (N2O) ---- 0.325 ppmv (0.0000325%)
Carbon monoxide (CO) - 0.1 ppmv (0.00001%)
Xenon (Xe) -------------- 0.09 ppmv (9×10-6%) (0.000009%)
Ozone (O3) -------------- 0.0 to 0.07 ppmv (0 to 7×10-6%)
Nitrogen dioxide (NO2) - 0.02 ppmv (2×10-6%) (0.000002%)
Iodine (I2) --------------- 0.01 ppmv (1×10-6%) (0.000001%)
Ammonia (NH3) --------- trace

For a total DRY AIR gas ppmv of 1,000,064.5.

And then Water vapor (H2O), also known as clouds, which is also a greenhouse gas, can vary from 0.001% to as high as 5% ppmv, but lets ignore water vapor for a moment and just concentrate on dry air gases.

Now some of these gases mix to create compounds or form compound gases. Some of which are harmful and some of which are not. All of the harmful greenhouse gases/compounds are Carbon dioxide, Nitrous oxide, Methane, Hydrofluorocarbon gases (HFC's), Perfluorocarbons (PFC's), and Sulphur Hexafluoride (SF6).

CO2 is the only one that's even close to a measurable fraction, and all the others combined are so infinitesimally small by comparison, you can simply add 0.0001 to CO2 and it will more than cover combining of all of them to represent the harmful greenhouse gas ppmv number.

So pre-industrial concentration of harmful greenhouse gases, before humans had any measurable contribution to them, scientists concur we were at about 280 ppmv. Today, we are at about 400 ppmv.

Now this includes natural emissions, not just human emissions. But, for sake of making this easy, lets just blame all +120 ppmv on humans just to nail home the point.

This means in the entire era of human contribution to harmful greenhouse gases, we've accounted for a whopping 120 ppmv in an atmosphere that holds 1,000,064.5 in total ppmv.

In other words, we've contributed a total of 0.0012% to the overall ppmv of the atmosphere in our entire contributing existence.

To put this in perspective, that's approximately 1% of 1% of 1%, or 1/1000th of 1% of the entire size of the Earth's atmosphere.

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Like I said, equivalent to a mouse farting in a domed stadium.