Greenhouse effect on other planets - Revision history

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energy>Ethan.boechler at 19:10, 18 June 2021

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			[[fr:Effet de serre sur d'autres planètes]]
	[[File:427px-Mars_atmosphere.jpg\|400px\|framed\|right\|Figure 1. Photograph of Mars, showing its thin atmosphere.<ref>"Mars atmosphere". Transferred from de.wikipedia to Commons. Original source: taken from Viking Orbiter Raw Image Archive on CD-ROM (PDS) (info;order). Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Mars_atmosphere.jpg#/media/File:Mars_atmosphere.jpg</ref>]]		[[File:427px-Mars_atmosphere.jpg\|400px\|framed\|right\|Figure 1. Photograph of Mars, showing its thin atmosphere.<ref>"Mars atmosphere". Transferred from de.wikipedia to Commons. Original source: taken from Viking Orbiter Raw Image Archive on CD-ROM (PDS) (info;order). Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Mars_atmosphere.jpg#/media/File:Mars_atmosphere.jpg</ref>]]

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	[[File:427px-Mars_atmosphere.jpg\|400px\|framed\|right\|Figure 1. Photograph of Mars, showing its thin atmosphere.<ref>"Mars atmosphere". Transferred from de.wikipedia to Commons. Original source: taken from Viking Orbiter Raw Image Archive on CD-ROM (PDS) (info;order). Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Mars_atmosphere.jpg#/media/File:Mars_atmosphere.jpg</ref>]]		[[File:427px-Mars_atmosphere.jpg\|400px\|framed\|right\|Figure 1. Photograph of Mars, showing its thin atmosphere.<ref>"Mars atmosphere". Transferred from de.wikipedia to Commons. Original source: taken from Viking Orbiter Raw Image Archive on CD-ROM (PDS) (info;order). Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Mars_atmosphere.jpg#/media/File:Mars_atmosphere.jpg</ref>]]

	<onlyinclude>The '''greenhouse effect''' is not the same on all planets, and differs dramatically based on the thickness and composition of the [[atmosphere]]. Three planets that show how dramatically the conditions of a planet can change with the different levels of the [[greenhouse effect]] are Venus, Earth, and Mars.</onlyinclude>		<onlyinclude>The '''greenhouse effect''' is not the same on all planets, and differs dramatically based on the thickness and composition of the [[atmosphere]]. Three planets that show how dramatically the conditions of a planet can change with the different levels of the [[greenhouse effect]] are Venus, Earth, and Mars.</onlyinclude>

	~~Although~~ Earth, Mars, and Venus are different distances from the Sun, ~~they are not so drastically different that one would expect dramatic temperature differences to occur solely because of this~~. ~~Since they~~ are a fairly similar distance from the Sun, they formed out of the same material and had approximately the same initial [[temperature]]s several billion years ago.<ref name="RE2">Nick Strobel. (May 7, 2015). ''Planetary Science'' [Online]. Available: http://www.astronomynotes.com/solarsys/s9.htm</ref> Despite these similar initial conditions, Venus is now too hot for life and Mars is too cold. This difference in temperatures is caused partially by the different values for [[Solar energy to the Earth\|energy incident on these planets]]. The main difference is still caused by the composition and thickness of a planets atmosphere.		Earth, Mars, and Venus are different distances from the Sun. Venus is the closest and hottest, followed by Earth and then Mars. They are a fairly similar distance from the Sun, they formed out of the same material and had approximately the same initial [[temperature]]s several billion years ago.<ref name="RE2">Nick Strobel. (May 7, 2015). ''Planetary Science'' [Online]. Available: http://www.astronomynotes.com/solarsys/s9.htm</ref> Despite these similar initial conditions, Venus is now too hot for life and Mars is too cold. This difference in temperatures is caused partially by the different values for [[Solar energy to the Earth\|energy incident on these planets]]. The main difference is still caused by the composition and thickness of a planets atmosphere.

	==Temperature Difference and the Greenhouse Effect==		==Temperature Difference and the Greenhouse Effect==

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	[[File:427px-Mars_atmosphere.jpg\|400px\|framed\|right\|Figure 1. Photograph of Mars, showing its thin atmosphere.<ref>"Mars atmosphere". Transferred from de.wikipedia to Commons. Original source: taken from Viking Orbiter Raw Image Archive on CD-ROM (PDS) (info;order). Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Mars_atmosphere.jpg#/media/File:Mars_atmosphere.jpg</ref>]]		[[File:427px-Mars_atmosphere.jpg\|400px\|framed\|right\|Figure 1. Photograph of Mars, showing its thin atmosphere.<ref>"Mars atmosphere". Transferred from de.wikipedia to Commons. Original source: taken from Viking Orbiter Raw Image Archive on CD-ROM (PDS) (info;order). Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Mars_atmosphere.jpg#/media/File:Mars_atmosphere.jpg</ref>]]

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	==Temperature Difference and the Greenhouse Effect==		==Temperature Difference and the Greenhouse Effect==
	Looking at Earth's atmosphere, it is mainly [[nitrogen]] and [[oxygen]] with ~~enough~~ [[greenhouse ~~gases~~]] to raise the [[Temperature of the Earth\|Earth's average temperature]] by 33°C ~~above the -18°C which is~~ the temperature of the Earth ~~without~~ the greenhouse effect~~]]. This makes~~ the average temperature of the Earth 15°C. The thickness of the Earth's atmosphere, combined with the moderate amount of greenhouse gases works to trap enough [[radiant heat]] within the atmosphere to create a temperate, habitable planet.<ref name="wolfson"> R. Wolfson. (May 7, 2015). ''Environment and Climate'', 2nd ed. New York, U.S.A. Norton, 2012, pp. 335-337</ref>		Looking at Earth's atmosphere, it is mainly [[nitrogen]] and [[oxygen]] with trace amounts of [[greenhouse gas]]es. The small percentage of greenhouse gases is still enough to raise the [[Temperature of the Earth\|Earth's average temperature]] by 33°C! With no greenhouse gasses, the average temperature of the Earth would be -18°C. Life on Earth needs the greenhouse effect to make the average temperature of the Earth 15°C. The thickness of the Earth's atmosphere, combined with the moderate amount of greenhouse gases works to trap enough [[radiant heat]] within the atmosphere to create a temperate, habitable planet.<ref name="wolfson"> R. Wolfson. (May 7, 2015). ''Environment and Climate'', 2nd ed. New York, U.S.A. Norton, 2012, pp. 335-337</ref>

	Mars ~~however, is quite different in its~~ [[climate]] ~~than~~ Earth~~. The main reason for this is that~~ Mars has a very thin ~~atmosphere, with~~ its atmospheric density being ~~only~~ 1% of ~~the [[~~density~~]] of the Earths atmosphere~~.<ref name="wolfson"/> ~~As well~~, the composition ~~causes~~ major differences. Mars' atmosphere is composed mainly of carbon dioxide, but ~~due to the density~~ there is so little carbon dioxide overall that the greenhouse effect is essentially negligible. ~~Because of this~~, the temperature of Mars is significantly lower than the ~~Earths~~ temperature.		Mars' [[climate]] is quite different from Earth's; Mars has a very thin atmosphere—with its atmospheric [[density]] being 1% of Earth's atmospheric density. <ref name="wolfson"/> Additionally, the composition creates major differences. Mars' atmosphere is composed mainly of carbon dioxide, but there is so little carbon dioxide overall that the greenhouse effect is essentially negligible. This, coupled with the distance from the sun means that the temperature of Mars is significantly lower than the Earth's temperature.

	Venus ~~represents~~ the opposite ~~end~~ of the ~~temperature spectrum~~. ~~The reason for this is that~~ Venus has an atmosphere that is 100x ~~as dense as the~~ Earth's atmosphere, and ~~it is composition contains~~ 96% [[carbon dioxide]]. This ~~represents~~ an enormous greenhouse effect that ~~is increasing~~ the temperature of Venus to approximately ~~462°C - hot~~ enough to melt [[lead]].<ref name="wolfson"/> Although the presence of a [[runaway greenhouse effect]] on Venus is part of the reason it is so hot, ~~its~~ proximity to the Sun ~~is also a contributing factor~~. ~~Surprisingly, the~~ greenhouse effect on Venus ~~is so strong that Venus~~ would be ~~almost ''twice as cold''~~ if Venus had no atmosphere at all~~, unlike on Earth where the greenhouse effect warms the planet to habitable temperatures.~~<ref name="RE2"/>		Venus is the opposite of Mars in all the ways that were listed above. Venus has an atmosphere that is 100x denser than Earth's atmosphere, and 96% of the atmosphere is [[carbon dioxide]]. This creates an enormous greenhouse effect that increases the temperature of Venus approximately 462°C—hot enough to melt [[lead]]!<ref name="wolfson"/> Although the presence of a [[runaway greenhouse effect]] on Venus is a significant part of the reason it is so hot, the proximity to the Sun contributes. The greenhouse effect on Venus doubles the absolute temperature from what it would be if Venus had no atmosphere at all<ref name="RE2"/>

	Overall Earth, Mars, and Venus have similar atmospheres, [[cross section of the Earth\|interiors]], surfaces, and similar greenhouse gases in the atmosphere. However, the different levels of greenhouse gases in the atmosphere change the temperatures of the planets quite significantly. Carbon dioxide dominates the greenhouse gases in the atmospheres of these planets, but the warming on the planets varies significantly.<ref>Eddie Schwieterman. (May 7, 2015). ''Comparing the Greenhouse Effect on Earth, Mars, Venus, and Titan: Present Day and through Time'' [Online]. Available: http://www.astro.washington.edu/users/eschwiet/essays/greenhouse_ASTR555.pdf</ref>		Overall, Earth, Mars, and Venus have similar atmospheres, [[cross section of the Earth\|interiors]], surfaces, and similar greenhouse gases in the atmosphere. However, the different levels of greenhouse gases in the atmosphere change the temperatures of the planets quite significantly. Carbon dioxide dominates the greenhouse gases in the atmospheres of these planets, but the warming on the planets varies significantly.<ref>Eddie Schwieterman. (May 7, 2015). ''Comparing the Greenhouse Effect on Earth, Mars, Venus, and Titan: Present Day and through Time'' [Online]. Available: http://www.astro.washington.edu/users/eschwiet/essays/greenhouse_ASTR555.pdf</ref>

			==For Further Reading==
			*[[Greenhouse effect]]
			*[[Atmosphere]]
			*[[Carbon dioxide]]
			*[[Earth Temperature without GHGs]]
			*Or explore a [[Special:Random\| random page]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-08-26T21:30:47Z

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J.williams at 16:42, 12 August 2015

2015-08-12T16:42:53Z

New page

[[Category:Done 2015-04-01]]
[[File:427px-Mars_atmosphere.jpg|400px|framed|right|Figure 1. Photograph of Mars, showing its thin atmosphere.<ref>"Mars atmosphere". Transferred from de.wikipedia to Commons. Original source: taken from Viking Orbiter Raw Image Archive on CD-ROM (PDS) (info;order). Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Mars_atmosphere.jpg#/media/File:Mars_atmosphere.jpg</ref>]]

<onlyinclude>The '''greenhouse effect''' is not the same on all planets, and differs dramatically based on the thickness and composition of the [[atmosphere]]. Three planets that show how dramatically the conditions of a planet can change with the different levels of the [[greenhouse effect]] are Venus, Earth, and Mars.</onlyinclude>

Although Earth, Mars, and Venus are different distances from the Sun, they are not so drastically different that one would expect dramatic temperature differences to occur solely because of this. Since they are a fairly similar distance from the Sun, they formed out of the same material and had approximately the same initial [[temperature]]s several billion years ago.<ref name="RE2">Nick Strobel. (May 7, 2015). ''Planetary Science'' [Online]. Available: http://www.astronomynotes.com/solarsys/s9.htm</ref> Despite these similar initial conditions, Venus is now too hot for life and Mars is too cold. This difference in temperatures is caused partially by the different values for [[Solar energy to the Earth|energy incident on these planets]]. The main difference is still caused by the composition and thickness of a planets atmosphere.

==Temperature Difference and the Greenhouse Effect==
Looking at Earth's atmosphere, it is mainly [[nitrogen]] and [[oxygen]] with enough [[greenhouse gases]] to raise the [[Temperature of the Earth|Earth's average temperature]] by 33°C above the -18°C which is the temperature of the Earth without the greenhouse effect]]. This makes the average temperature of the Earth 15°C. The thickness of the Earth's atmosphere, combined with the moderate amount of greenhouse gases works to trap enough [[radiant heat]] within the atmosphere to create a temperate, habitable planet.<ref name="wolfson"> R. Wolfson. (May 7, 2015). ''Environment and Climate'', 2nd ed. New York, U.S.A. Norton, 2012, pp. 335-337</ref>

Mars however, is quite different in its [[climate]] than Earth. The main reason for this is that Mars has a very thin atmosphere, with its atmospheric density being only 1% of the [[density]] of the Earths atmosphere.<ref name="wolfson"/> As well, the composition causes major differences. Mars' atmosphere is composed mainly of carbon dioxide, but due to the density there is so little carbon dioxide overall that the greenhouse effect is essentially negligible. Because of this, the temperature of Mars is significantly lower than the Earths temperature.

Venus represents the opposite end of the temperature spectrum. The reason for this is that Venus has an atmosphere that is 100x as dense as the Earth's atmosphere, and it is composition contains 96% [[carbon dioxide]]. This represents an enormous greenhouse effect that is increasing the temperature of Venus to approximately 462°C - hot enough to melt [[lead]].<ref name="wolfson"/> Although the presence of a [[runaway greenhouse effect]] on Venus is part of the reason it is so hot, its proximity to the Sun is also a contributing factor. Surprisingly, the greenhouse effect on Venus is so strong that Venus would be almost ''twice as cold'' if Venus had no atmosphere at all, unlike on Earth where the greenhouse effect warms the planet to habitable temperatures.<ref name="RE2"/>

Overall Earth, Mars, and Venus have similar atmospheres, [[cross section of the Earth|interiors]], surfaces, and similar greenhouse gases in the atmosphere. However, the different levels of greenhouse gases in the atmosphere change the temperatures of the planets quite significantly. Carbon dioxide dominates the greenhouse gases in the atmospheres of these planets, but the warming on the planets varies significantly.<ref>Eddie Schwieterman. (May 7, 2015). ''Comparing the Greenhouse Effect on Earth, Mars, Venus, and Titan: Present Day and through Time'' [Online]. Available: http://www.astro.washington.edu/users/eschwiet/essays/greenhouse_ASTR555.pdf</ref>

==References==
{{reflist}}
[[Category:Uploaded]]