almighty_j ([info]almighty_j) wrote in [info]conspiracies on August 27th, 2008 at 12:44 pm
Ā, nu re.

Tātad, mūsu planētu tā vai citādi silda Saule un tikai saule. Un šobrīd tā planētu apgādā ar ~15x vairāk enerģijas, nekā mēs šeit 'saražojam' uz vietas, dedzinot fosilo kurināmo. Tad nu šai procesā iesaistās ogļskābā gāze un kā tieši tas notiek, itin labs skaidrojums ir šis: [citējot]

CO2 (MW=44) is a bit heavier than nitrogen (MW=28) or oxygen (MW=32), but is nevertheless well-mixed in the atmosphere from top to bottom due to convection (wind) at the bottom and a long mean free path at the top. The earth absorbs visible light from the sun and re-radiates in the infrared. Initially the emitted photons are headed for space.(For more detail, look up the Plank black body distribution for sun and earth.) When CO2 absorbs infrared radiation, the molecule goes into an excited state. (For spectra and absorption cross sections, consult the HITRAN database.) If the excited molecule collides with another molecule, the energy from the excited state can be transferred into kinetic energy (heat) of the colliding molecules. Alternately, the excited state can relax by re-emitting an infrared photon. The emission process is isotropic, so on average half of the photons are emitted toward the ground and half toward space. The process of absorption and emission is repeated many times in the atmosphere, so the energy transport can be thought of as a diffusion process. The hindrance to energy flow into space is the greenhouse effect.

Man šobrīd izskatās, ka temperatūras paaugstināšanās process ir monēta ar divām pusēm - daļēji tā ir Saules aktivitātes paaugstināšanās (kas patiešām ir ciklisks process) un daļēji tā ir siltumenerģija un siltumnīcas efekta gāzes, kuras atmosfērā palaižam mēs, izmantojot substanci, kas līdz šim sevī uzkrājusi pagātnē saņemto Saules enerģiju.

Problēma faktiski nav sasilšanā. Dzīvnieku un augu sugas spējīgas pielāgoties. Mēs esam tie, kam draud nepatikšanas tā iemesla dēļ, ka mums ir 'ekonomika'...
 
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