flacaltenn
Diamond Member
here's the link!!sure post up a paper? is it in laymens terms or full of math that I haven't used in my life before and therefore can't understand anyway? I'm open to the challenge.sure, just post up that experiment that proves back radiation. Oh that's right you ain't got one. Tell me how warm it is at about 30 thousand feet? And what is the pressure, can you breath there?CO2 back radiation is there 24 hours a day. If it wasn't -- you wouldn't just have a frozen ass, you'd be missing fingers and toes. IIRC -- CO2 accounts for something like 12degC in the nominal surface temperatures.
(Could be wrong -- look it up)..
Edit, why is there moisture in a greenhouse? And why doesn't the temperatures continue to climb with CO2 added?
I don't need an experiment -- I measure IR photon energy constantly in my work. I know that materials eject IR photons in all directions as a function of their temperature. That's how an IR thermometer works. And the basis for CO2 back radiation is covered in every textbook on Atmos Physics. Furthermore the backradiation HAS been measured reliably and repeatedly for over 60 years.
And the Earth is not literally a GreenHouse. It's just a convienent analogy for folks that don't want to take 4 or 6 semesters of specialized physics. The Earth surface temperatures are NOT just a function of added CO2. That's where the simplistic GW models went off the rails in PREDICTING short term surface warming. But that does not mean that CO2 has NO effect on the general surface temperature of the planet.. It DOES..
Have you SEEN a paper measuring back radiation? I'll certainly provide some for you if you promise to never state you've that it hasn't been done..
you act like me being a non scientist I am somehow off base, and yet there are scientist who don't believe. You agree?
Not poking at atcha. Just would like to help you understand how well understood IR radiation is understood. Maybe you should go first with all the "scientists" who don't believe that CO2 is a GreenHouse gas..
So you go me the BEST denier of the GHouse and I'll give you a start on ACTUAL MEASUREMENTS of back radiation from the atmosphere..
Atmospheric back radiation in the tropical pacific: Intercomparison of in-situ measurements, simulations and satellite retrievals - Springer
The back radiation has been measured with an Eppley pyrgeometer on board the R/V Vickers in the tropical Pacific Ocean during the field campaigns COARE (Coupled Ocean Atmosphere Response Experiment) and CEPEX (Central Equatorial Pacific Experiment) in February and March 1993, respectively. As part of these compaigns radiosondes have been launched from the Vickers several times per day and cloud cover was observed frequently. The radiosonde and cloud observations are used together with a radiative transfer model to calculate the back radiation for a subsequent intercomparison with the pyrgeometer measurements. Another means of comparison is derived from space-borne SSM/I (Special Sensor Microwave/Imager) measurements. The mean difference between pyrgeometer measurements and simulated downwelling irradiance at the sea surface is less than 2 W/m2, at a mean of 425 W/m2 in the warm pool, with a standard deviation of 8 W/m2. The comparison of satellite measurements with pyrgeometer readings shows a mean difference of-3 W/m2 and a standard deviation of 14 W/m2. The mean difference between satellite-derived back radiation and simulated one is 3 W/m2 with a standard deviation of 14 W/m2. Comparisons with results obtained from bulk formulae applied to surface meteorological observations show a good performance of the bulk parameterisations in the cloud-free case but a general overestimation of the back radiation in cloudy situations.
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REFERENCE NUMBERS 7,8,9 & 14 would probably be the next stuff for you to read..
ENJOY !!!
Back Radiation | Co2 Insanity
There's a LOT of crap on the Internet. Keying on the phrase "well-mixed gas" is a red herring. Especially when the proof is the ACTUAL MEASUREMENTS of CO2 from satellite. To wit ---
From the NASA graph below (verify with link here) we can discern distinct and measurable regional variations in CO2 ppmv. So even NASA data itself further puts paid to the bizarre notion that this benign trace gas is “well-mixed” around the globe.
"puts paid to the bizarre notion?"" Hardly son.. Somebody can't read a pseudocolor graph. Take a look at the numeric range of the color chart under the graph. THE ENTIRE COLOR RANGE covers only about 25 or 30ppm.. For a gas whose average concentration is 400ppm. And it's SEASONAL.. It is definitely "well mixed enough" to be a GreenHouse gas. With that pseudo-science outlook on atmos mixing -- you could blame the recent Helium shortage on the fact that it all simply floated off into space -- because it was too light to be captured at the surface.
Nonsense..