Weekend, good weather, walk through the center of Pozna, good day. And then at night, a guy goes on Twitter and sees a politician flirting with global warming by throwing out numbers that he doesn’t understand himself.
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Fortunately, after Sunday is Monday, you can start working on clearing up questions about the effect of greenhouse gases on the atmosphere and climate.
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According to Janusz Korwin-Mikke, the Earth’s atmosphere is only 0.04 percent. Carbon dioxide, and everyone is afraid of it when it is 0.06%. Climate warming would be fatal. Both facts are absolutely correct. Also, in his argument, Janusz points out that there is 95 percent on Mars. Carbon dioxide is in the atmosphere and the surface temperature is about 75 percent. below the ground.
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Where did Mr. Janusz go wrong? Anywhere. All the above information is correct. The problem is that these are random facts from the thesis. After all, it may reflect your argument that 96.5 percent are on Venus. The atmosphere is carbon dioxide, the pressure is one hundred times that of Earth, and the surface temperature is more than 450 degrees Celsius. Only that would be as weak an argument as Mr. Janusz’s.
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How is it really?
Carbon dioxide alone is not the only factor that affects the temperature on the planet’s surface. The most important factors can be limited to the composition of the atmosphere, but also its density, water content and distance from the sun.
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The last factor does not change significantly, so we can simply show that the distance from the Earth to the Sun is 150 million km and the distance from Mars to the Sun is about 230 million km. According to the inverse square law, Mars gets 40%. Radiation reaches Earth.
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Reality: Mars is further from the sun than Earth and therefore receives less solar radiation.
The average pressure at the Earth’s surface is 1013 hectopascals, while at the bottom of the Hellas Basin on Mars, the pressure is only 11.5 hectopascals. As a result, the atmosphere, whether or not it is high in carbon dioxide, is unable to retain heat. If the atmosphere were thick with the same percentage of carbon dioxide … it would be completely different. These are the thoughts of the proponents of the idea of rehabilitating Mars. It will be enough to increase the density of the atmosphere and the greenhouse effect will do its job.
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Fact: The atmospheric pressure on Mars is 100 times lower than on Earth. The atmosphere of Mars is very rare.
The atmosphere of Mars is very dry. All the water that was on the surface of Mars froze or leaked into the upper atmosphere, where its molecules broke apart and were blown out into space by the solar wind. Meanwhile, the proportion of the Earth’s surface is 70 percent. oceans, thanks to which the atmospheric humidity is high enough.
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What is the relationship of humidity with changes in temperature? Water slows down changes in temperature. Everyone knows that after the first week of warming, the water in the lakes is still cold. If we go to the rainforests, where the humidity is very high, the temperatures are basically the same throughout the year. If we go to the Sahara desert, where the humidity is low, we will fry during the day and freeze at night. The same is true on Mars, where rovers and landers, due to the low water content in the atmosphere, have to deal with a daily temperature range of 80-90 ° C.
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The chemical composition of the atmosphere still exists. We also have other greenhouse gases in Earth’s atmosphere that contribute to global warming. These include, for example, methane, nitrogen oxide, and ozone. It is noteworthy that water vapor in the atmosphere is responsible for much of the greenhouse effect, which I mentioned earlier. These gases are absent in the thin atmosphere of Mars.
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In conclusion, it does not make sense to mix the numbers on the amount of carbon dioxide in the atmosphere, especially when comparing two completely different atmospheres. The atmosphere of the planets is much more complex, and when analyzing the changes that occur in them, many factors must be taken into account at the same time. But it wouldn’t fit into a smart-sounding tweet.
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