All Questions
Tagged with earth atmospheric-science
87
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Has a heavier atmosphere and the relocation of oil around the Earth had a measurable effect on the rotation of the Earth?
I am wondering if the man-made carbon emissions put in the Earth's atmosphere over the past 100+ years, and also the relocation of oil around the Earth over this same time period, has had any ...
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Is this Volcanic or Impact winter management proposal right? [closed]
In case of a volcanic winter where a VEI 8 volcano releases large amounts of SO2 and H2S into the stratosphere making it react with OH and H2O to form sulfuric acid (H2SO4) wich would prohibit most of ...
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Does a planet's "equatorial bulge" induce any kind of motions or currents in the atmosphere?
Rotating planets, like the Earth, are not perfect spheres but are instead oblates. This affects both the crust and the atmosphere, creating a bulge in the equator 1.
I was wondering if there are ...
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How large would the earth have to be to retain hydrogen?
How high would the earth's escape velocity have to be to retain hydrogen or helium over geological timescales?
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2
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Air pressure at ground level at the equator and the poles
At the equator at sea level you are about 17 miles higher up than at the poles ie 17 miles further from the center of the earth. Yet the air is not the same as it would be 17 miles up at a higher ...
4
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535
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Have rocket float into upper atmosphere via balloon [duplicate]
I'm assuming a majority of the fuel used in a rocket to say get to the moon is involved in escaping earth's gravity.
So why can't we create a smaller weighing rocket, with less fuel to carry and ...
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4
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4k
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Does dusk really remain for a shorter period of time at the equator?
It is said that the dusk remains for shorter time at equator than the poles. Because, the equator rotates faster than poles. But it is also true that time is the same in every latitude, and if it's ...
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How much solar irradiance do clouds block from reaching the Earth's surface?
Consider a fixed point in the Milankovich cycle and the solar cycle, a fixed Earth-Sun distance, and a fixed horizontal location on Earth, and assume that the Sun is at the zenith for that location. ...
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Using the sky and ground as a battery
Since there is a voltage difference between the ground and sky, shouldn't I theoretically be able to light a bulb by connecting one terminal to the ground and raising the other one to the sky (via a ...
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Why is ozone $\rm O_3$ in the Earth's upper atmosphere?
If you look at the density table, you will see that ozone has the highest density among other gases, so why is it in the upper layer of the atmosphere, in the picture I schematically drew how the ...
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Why doesn' t the sky look blue from outer space? [duplicate]
The sky looks blue because blue sunlight is scattered all over the atmosphere. Doesn't the same take place in the other direction? From Earth to the sky? So the atmosphere would look blue in outer ...
user307209
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5
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Paradox about greenhouse effect?
I know about the greenhouse effect, but isn't earth receiving the same amount of energy but getting hotter than with that same amount of energy?
My guess is that earth reflects less light, but then ...
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Would everyone die? [duplicate]
When you open the door of your spaceship, the oxygen disappears from the ship.
So if I put a very very long tube from the Earth to space,
would all the oxygen from the Earth automatically aspire into ...
- 99
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3
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312
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Doesn't Increase of Potential Temperature with Height contradict Adiabatic Nature of Processes within Troposphere?
According to my education as a sailplane pilot our troposphere is in good approximation subject to adiabatic processes.
Using adiabatic equations of (nearly ideal) ...
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How much the Earth atmosphere oscillates due to Moon tidal force and does this produces winds?
As there is the tidal force of the Moon exerted on the Ocean water I supose there must be some force acting to the Earth's atmosphere. So when the atmosphere starts falling down as the Moon is ...
- 2,255
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60
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Why don't hovercrafts move West relative to the Earth [duplicate]
Suppose that there is a hovercraft floating a few centimetres above the Earth's surface. As it is disconnected from the Earth, which is spinning from West to East, shouldn't it appear to move East to ...
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Where do the gases such as hydrogen and helium end up after leaving the earths atmosphere?
I've heard that gases like hydrogen and helium leak out of the earth's gravity a little by little.
but where are they going? where do they end up after leaving earth's pull?
would the sun pull them ...
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Why can atmospheric re-entry heat up the air into plasma?
The adiabatic processes of re-entering earth from a spaceship, creates intense heat. Heat in the range of 1700-2000 degrees Celsius.
I've read the the temperature in the air molecules generate a ...
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28
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Generating power with a "straw" to space... Is it possible? [duplicate]
Imagine you have a straw in a glass of water. If you put a turbine inside it somehow and move the glass, pour water in and out of it etc, you would see the water level rise and fall, and the turbine ...
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How do thunderstorms generate ionospheric potential?
In all the explanations of how global electric circuit on Earth works, I've always encountered statements like "thunderstorms generate ionospheric potential" (which is about 250 kV).
E.g. here: https:...
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How has the Earth's air pressure varied over geological time scales?
It is estimated that the Earth is losing about $5 \times 10^7 kg$ per year. Most of it due to hydrogen loss. I suppose this has an impact on the pressure of the atmosphere in general.
Thus, I am ...
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2
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Does a helicopter that simply hovers remain in the same spot on earth? [duplicate]
Ignoring statistical variation in wind, will a helicopter that only applies force perpendicular to a perfectly sphere earth remain in the exact same spot relative to the earth?
I am arguing with ...
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690
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What would happen to the water bodies if gravity ceased to exist on Earth?
If water stopped flowing (it would stop flowing downwards from mountains and all)
then, would it start rising upwards? If it floats on the space ( I say space because there'd not be any atmosphere) ...
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3
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Is there a difference between the red sky in the morning and in the evening?
It certainly has a different feeling to it, but
does the temperature or earth's rotation or the clouds
or anything else really make it two different physical
phenomena or at least different colors?
...
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How much does temperature affect the time of sunrise?
Please forgive me if this is a dumb question, or if my understanding of basic physics is wrong. Please feel free to correct me.
As I understand it, if the Earth didn't have any atmosphere, then the ...
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258
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Blocking of infrared radiation from the sun by $\rm CO_2$ [duplicate]
Why is the infrared heat from the sun not prevented from entering the earth's atmosphere by $\rm CO_2$ to the same extent that it is prevented from leaving the Earth's atmosphere?
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How do we not feel the speed of rotation of Earth?
Many people say, we don't feel the speed because everything around us including the air moves with the same speed, but I am not satisfied with the explanation. If it was so, shouldn't we feel a huge ...
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2
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What is the scientific explanation for radio waves bending around the Earth?
The experiment
This experiment is documented in a documentary called Convex Earth. The exact location the following information is taken from starts at 14:25.
High frequency directional antennas are ...
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Why microwaves used in satellite communications?
I've been reading recently that:-
EM waves with a shorter wavelength have shorter range in air/other medium
Microwaves are used in satellite communications over radio waves.
This doesn't make sense ...
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223
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Are North aurora and South aurora produced by positive and negative particles respectively?
Are North aurora and South aurora produced by positive and negative particles respectively?
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398
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Space Straw - Pressures and Possibility [duplicate]
So, Thinking Again :/
If we built a tunnel, out into space far beyond our atmosphere and opened it up
Would the resulting differences in pressure then effectively suck out the interior of our ...
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What causes the perceived intensity of the sun to change on a short timescale?
I was inspired by this question to ask, what causes the "beating down" feeling of the sun to vary day to day? While the linked post explains why the sun feels hotter in the summer than in the winter, ...
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If Earth had gravity and atmosphere, but no Sun, will Temprature change with altitude?
Gravity pulls down the atmosphere thus creating higher Atmospheric Pressure close to the surface,
This pressure is adding Force to air molecules,
and since Heat is essentially adding force to ...
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254
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Why 8 am is darker than 12 pm?
Why is 8 am (just after sunrise) darker than 12 pm (noon)? Does it have something to do with the geometry of spheres? Or is it due to the atmosphere?
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How does Earth hold its atmosphere?
According to Einstein's theory of relativity, gravity is not pulling us down but space is pushing us down. This mean there is no gravity and its an illusion. So, in this scenario how does Earth hold ...
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451
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Earth's rotation and a helicopter [duplicate]
Imagine a helicopter that took off from point A on the ground and goes vertically in the air to a certain fixed point B in the atmospheric area at a certain fixed altitude with enough fuel to stay ...
4
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Why is the tropopause at a higher altitude at the equator?
This site says that the tropopause is at a higher altitude at the equator because:
Gravitational force from a point is higher closer to it and reduces
with increasing distance from it. Because ...
- 2,005
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Why does the Earth cool at night time?
I do understand that open water and open ground cools by the means of convection — lower air takes the heat and goes up, where it cools.
But why does the Earth lose energy and where does it go? Does ...
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How would the Aurora light on Earth look like if there wasn't a magnetic field?
Here are some pictures of the aurora light.
The beautiful phenomenon of Aurora is a well-known one, seen in the northern (Aurora Borealis) and southern parts (Aurora Australis) of the globe. Here is ...
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Why is air not sucked off the Earth?
People said outside earth is a vacuum. But the air does not get sucked from the Earth's surface. Some said it is due to gravity and some said the speed of air molecules are not high enough to escape....
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Is the Earth gaining or losing mass over time?
The earth presumably loses mass because molecules of the atmosphere disassociate and fly off into space where the solar wind carries them away.
On the other hand the earth gains mass because ...
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Does aeroplane moving against Earth's rotation cause relative wind (assuming otherwise a quiet weather outside)?
Although, I know some answers, I need more affirmative and accurate answers.
Why is the journey time from London to Singapore less compared to Singapore to London? Is it because of Earth's rotation ...
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What would happen to Earth's atmosphere if the force of gravity became slightly weaker?
Many people, myself included, have wondered if the human race should be worried about the sun exploding at some point in our future (it seems to be well established that we shouldn't be worried.) On a ...
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How high do you need to be so as to not rotate along with Earth?
So, I saw this meme about some minister commenting that the Earth doesn't rotate, for if it did then planes only need to be in the air and the destination city would come to it. I know this is absurd ...
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Can an object take off from A, do not move (in the air) but land at a different place? [closed]
Can an object take off at a point A on the surface of the Earth and then land after some time only to land at a different place where it initially took off (because in the mean time the Earth has ...
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Velocity Profile of the Upper Atmosphere
Consider an Earth-Centered Inertial (ECI) frame in which the tangential (to Earth's surface) velocity is measured. Now consider obtaining constant average velocity profiles of the atmosphere as a ...
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How fast could you suck up the atmosphere [closed]
So kind of a strange question, but if i had a 1000 foot wide hose with endless storage space, whats the quickest possible time it could be used to suck up the entirety of the Earth's atmosphere.
Edit:...
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Maximum temperature possible on earth
What is maximum temperature that can we have on earth on a single day?
Lets say an air mass is static over an area and there is no way for air mass to move, sun warming it up would increase ...
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Why In Thermosphere is He and O divided as measured? [closed]
If we look Thermosphere a bit closer. we found out that Helium and Oxygen is divided peculiarily. This picture below shows the Earth looked below the south pole. So the orbiting direction is shown in ...
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How do stars from far away affect Earth?
I know that we obviously get light (or we wouldn't be able to see them), but are there any other ways that they affect Earth and maybe just our solar system in general?
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