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As I heard one person explain it, the Earth is like an Oven. You set an oven the temperature to 200 degrees it continues to warm until the desired temperature is reached. The earth is warming and when it reaches that new equilibrium temperature the piper will be paid.
Even now the consequences are just beginning to be felt and are harbingers of what is to come..
Unfortunately, we have deniers that are nothing more than dead weight keeping nations from taking needed action.
yet Mars (the 4th rock from the sun) is also warming, yet because of the distance is still quite cooler than the earth.....but also, Mars is 95% co2........o2 on mars is 0.13%
hmm..95% co2 yet is much cooler (The average temperature is about minus 80 degrees Fahrenheit (minus 60 degrees Celsius))... the earth is 4/100ths% co2 (0.04%).......o2 on earth is 21%
so if c02 is causing the warming, how is Mars, which is 95% co2 not an oven??
Oh my.
Mars has very little atmosphere at all, and no magnetic field. Trying to compare its climate with Earth's shows how shallow your understanding really is.
Shift your focus to Venus, with its much thicker atmosphere, greenhouse gas problem, and oven-like temperatures. Then get back with us.
I'll explain....The sun is the heat source, the CO2 in the atmosphere is blocking some of the heat from escaping into space and reflecting it back and warming the surface of earth....
Global warming 101.... Greenhouse gases, including carbon dioxide, water vapor and methane, each have at least three atoms in their molecules. These loosely bound structures are efficient absorbers of the long-wave radiation (also known as heat) bouncing back from the planet's surface. When the molecules in carbon dioxide and other greenhouse gases re-emit this long-wave radiation back toward Earth's surface, the result is warming.
Mars has very little atmosphere at all, and no magnetic field. Trying to compare its climate with Earth's shows how shallow your understanding really is.
Shift your focus to Venus, with its much thicker atmosphere, greenhouse gas problem, and oven-like temperatures. Then get back with us.
planetary scientists consider Mars to be in (on the very outer limits) of the so called sweet spot of plantes habitable to life, Venus not so much as it is too close to the sun (just outside the habitable zone)
Venus also rotates in the opposite direction of most planets, Venus has an extremely THICK atmosphere, which traps in heat in a runaway greenhouse effect..the atmosphere is so heavy it would feel like you were 1 mile (1.6 kilometers) deep underwater.
Only Venus and Uranus have this "backwards" rotation. It completes one rotation in 243 Earth days — the longest day of any planet in our solar system, even longer than a whole year on Venus. But the Sun doesn't rise and set each "day" on Venus like it does on most other planets. On Venus, one day-night cycle takes 117 Earth days because Venus rotates in the direction opposite of its orbital revolution around the Sun.
With an axial tilt of just 3 degrees, Venus spins nearly upright, and so does not experience noticeable seasons.... surface temperatures reach a scalding 880 degrees Fahrenheit (471 degrees Celsius).
Venus' magnetic field is much weaker than the Earth's due to Venus' slow rotation.
As Mars orbits the Sun, it completes one rotation every 24.6 hours, which is very similar to one day on Earth (23.9 hours).
Mars' axis of rotation is tilted 25 degrees with respect to the plane of its orbit around the Sun. This is another similarity with Earth, which has an axial tilt of 23.4 degrees.
because the atmosphere is so thin, heat from the Sun easily escapes this planet
Mars also has no global magnetic field
Last edited by workingclasshero; 04-05-2019 at 11:39 AM..
I am as much of an environmentalist as anyone. I worked with the EPA in college and while I don't doubt there is climate change, much of the rhetoric from both sides is overblown and slanted towards their side's position on the matter.
Here are some facts from the EPA:
From 1970 to 2017, aggregate national emissions of the six common pollutants alone dropped an average of 73 percent while gross domestic product grew by 324 percent. This progress reflects efforts by state, local and tribal governments; EPA; private sector companies; environmental groups and others.
The emissions reductions have led to dramatic improvements in the quality of the air that we breathe. Between 1990 and 2017, national concentrations of air pollutants improved 80 percent for lead, 77 percent for carbon monoxide, 88 percent for sulfur dioxide (1-hour), 56 percent for nitrogen dioxide (annual), and 22 percent for ozone. Fine particle concentrations (24-hour) improved 40 percent and coarse particle concentrations (24-hour) improved 34 percent between 2000, when trends data begins for fine particles, and 2015. (For more trends information, see EPA's Air Trends site.)
These air quality improvements have enabled many areas of the country to meet national air quality standards set to protect public health and the environment. For example, all of the 41 areas that had unhealthy levels of carbon monoxide in 1991 now have levels that meet the health-based national air quality standard. A key reason is that the motor vehicle fleet is much cleaner because of Clean Air Act emissions standards for new motor vehicles.
The United States does more for the environment that any other country in world, but we are not the only country in the world. I have said this before and it remains true -- until you get countries like India and China on board with emitting less pollution into the air, the problem is not going away.
planetary scientists consider Mars to be in the so called sweet spot of plantes habitable to life, Venus not so much
That's not the point. The point is that Venus is much hotter than it otherwise would be if it didn't have 100% of the planet covered 100% of the time by greenhouse gases.
If you are trying to insinuate that greenhouse gasses do not help retain some of the heat that otherwise would have been radiated out into space, then we have no common ground on which to debate.
Mars has very little atmosphere at all, and no magnetic field. Trying to compare its climate with Earth's shows how shallow your understanding really is.
Shift your focus to Venus, with its much thicker atmosphere, greenhouse gas problem, and oven-like temperatures. Then get back with us.
You complained about using the atmosphere of Mars in comparison to earth... and then you do the same thing with Venus, which is also not a good idea - since they are twice as close to the sun with more than twice the atmospheric thickness than the earth.
You complained about using the atmosphere of Mars in comparison to earth... and then you do the same thing with Venus, which is also not a good idea - since they are twice as close to the sun with more than twice the atmospheric thickness than the earth.
That's not the point. The point is that Venus is much hotter than it otherwise would be if it didn't have 100% of the planet covered 100% of the time by greenhouse gases.
I'll explain....The sun is the heat source, the CO2 in the atmosphere is blocking some of the heat from escaping into space and reflecting it back and warming the surface of earth....
Global warming 101.... Greenhouse gases, including carbon dioxide, water vapor and methane, each have at least three atoms in their molecules. These loosely bound structures are efficient absorbers of the long-wave radiation (also known as heat) bouncing back from the planet's surface. When the molecules in carbon dioxide and other greenhouse gases re-emit this long-wave radiation back toward Earth's surface, the result is warming.
CO2 also blocks heat from the sun coming in, since it's an insulator... not all of it, but some of it. That would seem to slow down the heat transfer through the atmosphere.
CO2 also blocks heat from the sun coming in, since it's an insulator... not all of it, but some of it. That would seem to slow down the heat transfer through the atmosphere.
That's correct, just like the glass of a greenhouse does, hence the term "greenhouse gas".
It is easy for the sun's rays to blast through glass and heat things up, but the re-radiated heat has a much harder time getting back through that glass. It's the reason your car interior gets to 135 with the windows rolled up even though it is only 90 outside. Greenhouse 101.
Greenhouse gasses in our atmosphere act very much in the same manner. They act as an insulator that the sun's heat is able to penetrate quite easily, but the slow moving, rising, re-radiated heat can only trickle through it.
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