File:Diagram showing the Earth's energy budget, which includes the greenhouse effect (NASA).png
Diagram_showing_the_Earth's_energy_budget,_which_includes_the_greenhouse_effect_(NASA).png (720 × 480 billedpunkter, filstørrelse: 61 KB, MIME-type: image/png)
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Beskrivelse[redigér]
BeskrivelseDiagram showing the Earth's energy budget, which includes the greenhouse effect (NASA).png |
English: This diagram shows the Earth's energy budget, which includes the greenhouse effect. The following description is an edited quote from a public-domain source (Lindsey, 2009): On average, 340 watts per square meter (W.m-2) of solar energy arrives at the top of the atmosphere. Earth returns an equal amount of energy back to space by reflecting some incoming light and by radiating heat (thermal infrared energy). Most solar energy is absorbed at the surface, while most heat is radiated back to space by the atmosphere. Earth's average surface temperature is maintained by two large, opposing energy fluxes between the atmosphere and the ground (right)—the greenhouse effect. Incoming solar radiation to the Earth is equal to 340 watts per square meter (100%). Of this (units are a percentage of incoming solar radiation to the Earth):
The Earth's surface releases 5% of the energy into the atmosphere by convection and 25% by evaporation.
Trenberth et al. (2009) estimate an energy imbalance at the top-of-the-atmosphere of 0.9 watts per square meter, due to the enhanced greenhouse effect.
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Dato | |
Kilde | global_energy_budget_components.png, on: The Atmosphere’s Energy Budget (page 6), in Climate and Earth’s Energy Budget (author: Lindsey, R.), Feature Articles. Publisher: Earth Observatory, part of the EOS Project Science Office, located at NASA Goddard Space Flight Center |
Forfatter | Robert Simmon |
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Dette er et retoucheret billede, hvilket betyder, at det er blevet digitalt ændret fra sin oprindelige version. Ændringer: (1) Adjusted colors to increase contrast and saturation, (2) modified text "greenhouse gases" to increase contrast.
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Licensering[redigér]
Public domainPublic domainfalsefalse |
This work is based on a work in the public domain. It has been digitally enhanced and/or modified. This derivative work has been (or is hereby) released into the public domain by its author, Enescot. This applies worldwide.
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nuværende | 29. feb. 2016, 22:49 | 720 × 480 (61 KB) | Cmdrjameson (diskussion | bidrag) | Compressed with pngout. Reduced by 30kB (33% decrease). | |
31. okt. 2012, 06:21 | 720 × 480 (91 KB) | Enescot (diskussion | bidrag) | {{Information |Description ={{en|1=This diagram shows the Earth's energy budget, which includes the greenhouse effect. The following description is an edited quote from a public-domain source (... |
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