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Thermoskydd
ja det har jag fattat, men d r ju inte CO2 lngre utan en annan molekyl dr co2 ingr. D r ju hela den vetenskapen inte korrekt d det inte r co2 som r problemet utan en mix dr co2 r inkl i. s jgg har rtt co2 i sig sjlv r tyngre men inte i molekylen dr co2 ingr i.
Luft bestr inte av en sammanhllen molekyl utan en blandning av gaser (dessa gaser r frmst olika molekyler men ven ngra enskilda atomer), nmligen:
Nitrogen -- N2 -- 78.084%
Oxygen -- O2 -- 20.9476%
Argon -- Ar -- 0.934%
Carbon Dioxide -- CO2 -- 0.04%
Neon -- Ne -- 0.001818%
Methane -- CH4 -- 0.0002%
Helium -- He -- 0.000524%
Krypton -- Kr -- 0.000114%
Hydrogen -- H2 -- 0.00005%
Xenon -- Xe -- 0.0000087%
Ozone -- O3 -- 0.000007%
Nitrogen Dioxide -- NO2 -- 0.000002%
Iodine -- I2 -- 0.000001%
Carbon Monoxide -- CO -- trace
Ammonia -- NH3 -- trace
Dessutom tillkommer betyande mngder av vattennga, allts molekylen H2O.
Vilken
vetenskap r inte korrekt?
Tror du br lsa detta:
How can CO2 trap so much heat if it only makes up 0.04% of the atmosphere? Arent the molecules spaced too far apart?
Before humans began burning fossil fuels, naturally occurring greenhouse gases helped to make Earths climate habitable. Without them, the planets average temperature would be below freezing. So we know that even very low, natural levels of carbon dioxide and other greenhouse gases can make a huge difference in Earths climate.
Today, CO2 levels are higher than they have been in at least 3 million years. And although they still account for only 0.04% of the atmosphere, that still adds up to billions upon billions of tons of heat-trapping gas. For example, in 2019 alone, humans dumped 36.44 billion tonnes of CO2 into the atmosphere, where it will linger for hundreds of years. So there are plenty of CO2 molecules to provide a heat-trapping blanket across the entire atmosphere.
In addition, trace amounts of a substance can have a large impact on a system, explains Smerdon. Borrowing an analogy from Penn State meteorology professor David Titley, Smerdon said that If someone my size drinks two beers, my blood alcohol content will be about 0.04 percent. That is right when the human body starts to feel the effects of alcohol. Commercial drivers with a blood alcohol content of 0.04% can be convicted for driving under the influence.
Similarly, it doesnt take that much cyanide to poison a person, adds Smerdon. It has to do with how that specific substance interacts with the larger system and what it does to influence that system.
In the case of greenhouse gases, the planets temperature is a balance between how much energy comes in versus how much energy goes out. Ultimately, any increase in the amount of heat-trapping means that the Earths surface gets hotter. (For a more advanced discussion of the thermodynamics involved, check out this NASA page.)
https://news.climate.columbia.edu/20...lobal-warming/
