That's why space suits are specially designed in order to keep people from getting too hot in the sunny bits but also prevent them from becoming too cold in the non-sunny bits. Upward radiation from the atmosphere at lower altitudes is largely absorbed by the atmosphere at higher altitude and subsequently reradiated downward.
As one goes higher this is less true and more of the radiation escapes into interplanetary space. This makes the higher altitudes colder.
The radiation is electromagnetic photons in the infrared part of the spectrum. It is true that rising air cools, but this does not apply to the steady state of the atmosphere. With increasing altitude, temperature falls; it reaches a minimum at about km, then begins to rise again. The drop is because the air expands and cools the atmosphere. The rise is because, beyond a certain point, UV is no longer attenuated by the ozone layer and conditions warm up again.
Technically temps should rise above 32 degrees Fahrenheit roughly up k ft If cold air is more denser than hot air it means it's mass is heavier than hot air than it should flow on earth surface. Due to gravitational pull maxim. Why is this article written so unintelligently? The pressure feels less? No the pressure can't feel anything the atmospheric pressure is less. It's valid English to write that, and it's also true; the atmosphere - meaning the gas molecules therein - "feel" less pressure at higher altitude.
In this explanation, perhaps "feels" was selected as a poor choice of words to describe that at higher altitudes, gases expand because as high space is approached by lighter gas particles they spread out due to the vacuum in higher altitudes. Gases don't actually have tactile feeling and thus feels less pressure per se Snowbirds appreciate heat humidity.
Now figure out why dry ice vapors sink. Is it possible that cabon dioxide is in vapor form heavier than the air we breathe? The lower density of hot air means that convection carries it aloft continuously, just as smoke rises up a chimney. The steady warming of air close to the ground replenishes the warm air lost upwards by heating the cooler air that flows in to replace it. This establishes a steady cycle of rising warm air and in-coming cooler air. The amount of melanin in the skin determines how quickly one sun burns.
The darker your skin the slower you burn. Melanin absorbs sunlight like the color black represents little to no light energy reflecting back from the observed object depending on how deep the black is. The temperature will start slowly increasing when there is no longer a significant change in pressure, and you decrease the distance between the object in question and the sun.
Interestingly enough the time of year that is the hottest for us is when the earth is furthest from the sun. On summer days, you go to the mountainous range or plain terrain. Because you are further from the center of the earths gravitational pull Which creates a force, and hence the pressure. The height of the atmosphere - at tens of kilometres - is negligible in comparison with the distance from the centre of the Earth to the planet's surface kilometres.
Certainly gravity plays a role - without it there would be nothing to hold on to the atmosphere, but it is the mass of the atmosphere itself that exerts the pressure at ground level. Mass does not exert a pressure, force does. The mass of the atmosphere above a given point on or above Earth's surface think a column or area A of air particles above that point that is within Earth's gravitational pull times the standard acceleration due to gravity, g, which equals about 9.
Divide that force by area A to get a value for pressure. It is both the mass of the atmosphere and the acceleration due to gravity that results in atmospheric pressure, to the first approximation. I agree with Chris here, its the mass of atmosphere that is majorly changing, the 'g' is more or less constant. Gravity does change. Gravity at the equator is actually less than closer to either of the poles. This is caused by increased centripetal acceleration which acts in the opposite direction to gravity.
Why is air colder the higher up you go? Well, it helps if you imagine the ground here on Earth as a big heater. It keeps us warm, and if you move away from the heater you feel cold. The light and warmth from the Sun. The light and warmth from the Sun travel through space towards Earth, and pass through our atmosphere. The heat just slips straight through it.
Scientists use models to help themselves think about things and to communicate to other people. Some places on land are actually below sea level. Do you think they are hotter or cooler than places at sea level? So you know that the sun is really hot, but space is really cold. Eventually as you get closer to the sun, the temperature will start to increase.
What this means is that it is less dense. Generally, the less dense air is, the colder it is. So the air is densest closest to the surface of the Earth, then it gradually becomes less dense until you get to the vacuum of space.
This density difference accounts for the temperature difference. At higher altitudes, the air is thinner. That's why it's harder to breathe at high altitudes--there's less oxygen. There's also less of everything else--carbon dioxide, water vapor, etc. These gases, which are greenhouse gases, are the part of our atmosphere which keep Earth at a warm temperature compared to outer space.
Without this atmosphere, Earth would be uninhabitably cold. So, even though higher altitude areas are closer to the sun, they have less ability to absorb the warmth of the sun because they have less of these gases. Good question! When air expands, it has to push the surrounding air out of its way, which means that it expends part of its energy to do the pushing.
As a result, the expanding air cools. When air contracts, it gets pushed into a smaller space by the air around it, which means that energy is put into it, which heats it up. Eventually, the expanding or contracting air will reach the same temperature and pressure as the air surrounding it, and the heating and cooling will stop. Air at higher altitude is under less pressure than air at lower altitude because there is less weight of air above it, so it expands and cools , while air at lower altitude is under more pressure so it contracts and heats up.
Air in our atmosphere moves up and down as part of the weather: the sun heats up the ground which absorbs more light than air and is thus warmer than the air , and the air in contact with the ground heats up, and expands and then cools. Elsewhere, cooler higher-altitude air sinks, is compressed as it descends, and gets heated as this occurs.
This process is called "convection", and it is responsible for nearly all of our weather.
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