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Climate as a Result of the Earth Heat Reflection

The authors show that the mean global temperature - and, therefore, climate - is determined mainly by the reflected portion of the total heat received from the Sun. The heat reflected directly by infra-red radiation is insufficient for maintenance of the temperature necessary for the Earth life, sin...

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Bibliographic Details
Published in:Latvian journal of physics and technical sciences 2009-01, Vol.46 (2), p.29-40
Main Authors: Barkans, J, Zalostiba, D
Format: Article
Language:English
Online Access:Get full text
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Summary:The authors show that the mean global temperature - and, therefore, climate - is determined mainly by the reflected portion of the total heat received from the Sun. The heat reflected directly by infra-red radiation is insufficient for maintenance of the temperature necessary for the Earth life, since it is limited by absorption windows created by green-house gases (mainly water molecules). The deficient heat is transported by a strong vertical convective air stream - a component of the total air circulation. This heat - limited only by Newton's law - is delivered to the upper troposphere layers not containing water molecules, from where it is dissipated, practically unlimitedly, at the infra-red radiation wavelengths corresponding to cooled media. The convection, in compliance with Newton's law, creates a negative feedback, which stabilizes the processes of temperature changes on the Earth reducing them by half. Darbā parādīts, ka Zemes vidējo temperatūru un, tātad, klimatu, nosaka galvenokārt Saules saņemtā siltuma atstarošanas apjoms. Siltums, kas tiek atstarots tieši ar radiāciju caur troposfēru ir nepietiekošs Zemes dzīvei nepieciešamās temperatūras uzturēšanai, jo to ierobežo siltumnīcas gāzu radīti (galvenokārt ūdens molekulu) absorbcijas logi. Nepietiekošais siltums tiek atdots ar vispārējās gaisa cirkulācijas sastāvdałas - stiprām vertikālām konvekcijas gaisa plūsmām. Tās siltumu, ierobežotu tikai ar Ņūtona likumu, nogādā uz ūdens molekulu nesaturošiem augšējiem troposfēras slāņiem, no kurienes tas ar atdzisušai videi atbilstošiem infrasarkanā starojuma viłņu garumiem tiek praktiski neierobežoti izkliedēts. Konvekcija, kas pateicoties Ņūtona likumam rada negatīvu atgriezenisko saiti, stabilizē Zemes temperatūras izmaiņas procesu, divkārši samazinot tās izmainās apmērus.
ISSN:0868-8257
2199-6156
DOI:10.2478/v10047-009-0007-0