Questions tagged [atmospheric-science]

The study of the composition or dynamics of the gaseous layers around planets, often applied to questions on Earth's atmosphere but can be applicable to all planets & moons in the solar system.

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1answer
88 views

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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2answers
51 views

Observations of a mushroom cloud

In this video of a nuclear bomb detonation/mushroom cloud, a few peculiarities arise and I simply had a couple questions pertaining to observations in the animation: Following the detonation, the ...
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5answers
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Why aren't rainbows more common?

Why are rainbows relatively rare? On any given day, there are billions of water drops in the air of varying sizes and dispersions, all of which light is passing through and refracting. What physical ...
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3answers
261 views

Is wind caused by differences in the atmospheric pressure or by differences in the atmospheric temperature or both?

I have heard that "Wind is caused by differences of atmospheric pressure" and "Wind is caused by differences of atmospheric temperature" both but I don't know for case that doesn't follow one of this. ...
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1answer
54 views

Inertia over an airplane [duplicate]

When an airplane is traveling, it moves at the same speed as the earth does due to inertia, but since, the plane is not directly touching the globe, how does is the speed of the earth is associated ...
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2answers
104 views

Given $2\text{ °C}$ atmospheric temperature rise, what would be the temperature increase if confined to an oven?

Consider the 2 °C average global atmospheric temperature rise as discussed by the IPCC. Assume an oven with an the interior that is a perfect cube having a volume of one cubic meter, empty of ...
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4answers
184 views

Energy Transport in stars

I'm trying to understand why convection is an efficient mode of energy transport in the outer layers of the solar interior. Could anyone give me a little bit of knowledge?
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3answers
76 views

Why is there less oxygen in a pressurised plane that is flying?

Children who have temporary lung problems like asthma attacks have to go on oxygen to heal. (At a hospital.) Immediately after a health incident they can’t go on an aeroplane because there is ...
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1answer
98 views

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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1answer
461 views

Can there be a pressure gradient in a large enough closed container?

If we had an airtight container that was large enough, say extended out to the Karmen line, would there still be a pressure gradient? If we assume that the pressure at the bottom was 1atm, would it ...
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2answers
453 views

Does pollution affect the color of the sky?

We know that the sky is blue due to Rayleigh Scattering. We know that Rayleigh Scattering is dependent on the size of the particles in the atmosphere. We know that pollution is made up of particles, ...
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1answer
47 views

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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1answer
28 views

Human body water storage effects on weather patterns

There are 7.614 billion humans and counting. On average a human being consists of 60% water. With that water being locked away from natural circulation for an average of 80 years. Are there any ...
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0answers
57 views

Can you have a dust storm in a vacuum?

Is it possible for a dust storm to form in a vacuum at normal $g$, where the only particles interacting with each other are specs of dust, or do you need a more traditional fluid base?
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1answer
151 views

Does atmospheric pressure increase temperature? [closed]

Is this wrong? If so, how: Gravity compresses the atmosphere. Gasses under pressure generate heat. Hot air rises. As it does, more cold air descends to be compressed and generate heat. Heat is ...
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1answer
36 views

Inertial reference frames in an atmospheric science context

A Hadley cell cycles air meridionally between the equator and 20 ◦ latitude. Assuming no zonal wind at the equator, what is the mean speed and direction of the trade winds at 20 ◦ ? My instructor ...
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3answers
524 views

Why is it severely cold high up in the atmosphere?

In the upper part of the atmosphere the kinetic temperature of air is of the order of 1000 K, even then one feels severe cold, why?
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1answer
23 views

Shock cones coming off a non-ablative object at various velocities

This may be the wrong stackexchange for this, apologies if it is. Lets say we have a sphere 1 meter in diameter that weighs 4.5 short tons. It will not change states or shape from its solid spherical ...
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2answers
94 views

Is the air we breathe ionized?

Is the air we breathe ionized? I am reading a book that says that the air we breathe is ionized but from what I have read so far, it is only the air in the upper atmosphere that is ionized.
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3answers
382 views

Why does pressure behave exponentially in the atmosphere?

I wonder why the pressure is exponentially within the atmosphere but (almost?) linear in the sea?
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2answers
86 views

What does this notation mean: $\mathrm{O}_{2} \ \ a\,{}^{1} Δ_{g} ← X\,{}^{3}Σ^{-}_{g} $?

The notation (which I found in the abstract of this paper) is $$\mathrm{O}_{2} \ \ a\,{}^{1} Δ_{g} ← X\,{}^{3}Σ^{-}_{g}. $$ Any help with this? I understand it's talking about quantum states of ...
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0answers
33 views

Two-photon absorption fluorescence of air

I'm wondering if there are any major constituents of air which are capable of undergoing two-photon absorption and ultimately fluorescing in the visible spectrum. The original wavelengths of the ...
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1answer
26 views

Finding pressure differences considering variations in different parameters [duplicate]

I have a place where the density of air at sea level is $\rho_0$ and the atmospheric pressure is $P_0$. Now suppose I want to calculate the pressure of air at a certain height h above the sea level, ...
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3answers
2k views

Is there a resonance frequency to air itself?

Obviously a lot of things cause air to vibrate, but does air have an actual resonance frequency?
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1answer
353 views

How do convective clouds form?

What are necessary conditions to form convective clouds with their flat cloud base, like this one: I know that convective instalibity at the ground is at start of the process, but I have realized ...
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2answers
174 views

Is the speed of sound constant?

I was looking at lightning, and started to wonder if the speed of the thunder slowed down as it lost energy traveling far distances. I know the amplitude of sound decreases, perceived as volume. Im ...
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2answers
182 views

What is the path of the bended light beam in a mirage?

Is it like this: Taken from the french Wikipedia page about mirages Or like this: If the second diagram is the right one, could you explain why the light beam "keeps curving" after arriving ...
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1answer
46 views

Plausible/ creative assumptions for solving equation of radiation transfer

I'm currently looking at the equation of radiation transfer given by $$\frac{1}{c}\frac{\partial }{\partial t}I_{\gamma} + \hat{\Omega} \cdot \nabla I_{\gamma} + \left ( k_{\gamma, s} + k_{\gamma, a}...
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1answer
40 views

Why helicopter don't go back? [duplicate]

Why a helicopter stays at same place with respect to earth while floating in air despite of rotation of earth?
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0answers
40 views

What is the optimum altitude for tapping atmospheric charge?

The atmosphere appears to have a large potential difference (voltage) in relation to ground. The obvious example is the thunder where this voltage becomes large enough to break the insulator - air. Of ...
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1answer
80 views

How to mathematically work out the color of the sky? [duplicate]

I was wondering if there is a way to mathematically work out the color of the sky, using the laws of geometric/wave optics.
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1answer
105 views

Can a gust of wind have a distinct blade-like edge?

I was staring at a puddle as a gust of wind hit it, producing the following wave pattern ... To my mind, the only way this could occur is if the gust of wind had a distinct leading edge, much like if ...
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2answers
122 views

Communications: Ground wave Propagation

(I wasn't having any tag for this question(Example: Communication-Systems, Modern-physics.)) I was studying ground wave propagation, my book writes the lines about it without explaining it. I really ...
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0answers
71 views

Air mass of star

Hi I am having trouble visualising this problem, and also not sure why the air pressure has been mentioned either. Here is the question: Assume you observe the above delta-Cepheid star at an ...
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3answers
120 views

L-band for search radars?

I'm making my way through the Linesman-related section's of Gough's Watching the Skies. Linesman was developed to counter the carcinotron jammer. The main solution was the Type 85, which had 12 ...
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3answers
990 views

Why do we feel the sunlight the second the sun gets out of the clouds?

The earth is 149.600.000 km away from the sun and the speed of light is 299 792.458 kilometres / second, therefore, it would take sunlight, on average, 8 minutes and 20 seconds to reach earth. Now, ...
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4answers
237 views

Jupiter: Why is there no atmosphere at distance?

Gravitational constant: 6e-11 (meters, seconds, and kg). Jupiter radius: ~ 69,000,000 meters (google) Jupiter mass: $2*10^{27}$. 1 kg, at Jupiter's radius, experiences ~100N of force: $$ F = G *...
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1answer
104 views

where does the wimshurst get its charges?

so i've stumbled upon the wimshurst machine, its quite a fascinating piece of equipment, although only useful in display situations only... BUT that still doesn't stop me from trying to understand it.....
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0answers
21 views

Understanding air permeation of a material

I am trying to research on acceptable materials to hold an atmosphere inside of a vacuum. Understanding that air will escape at different rates through all materials, I don't know what the property is ...
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2answers
137 views

What factors affects the cold temperatures in high altitudes?

Why it is that high altitude areas are colder than low altitude areas? Is it because the air pressure or any other? If we consider it with the sun rays, high altitudes receive sun rays earlier than ...
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3answers
1k views

Why isn't the Sun blue?

If I believe right, blue flames are hotter than red ones and if I recall correctly it's because blue tend to ultraviolet. Then why is the sun, which's capable of warming whole planets, red instead of ...
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0answers
99 views

Why don't two air masses just mix in the atmosphere?

In weather fronts, two air masses of different temperature, density etc. meet and one just moves over or under the other. Why do these two just mix together? What is the physical mechanism that ...
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0answers
33 views

Why can't we see particle tracks in clouds or dense fog? [duplicate]

We can see the tracks of charged particles in a cloud chamber. According to Wikipedia "A cloud chamber consists of a sealed environment containing a supersaturated vapor of water or alcohol". Also, in ...
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2answers
335 views

What is the pressure term appearing in Bernoulli's Equation? [duplicate]

In Bernoulli's equation the pressure plus kinetic and potential energy is constant. But what is this pressure term, physically? Is it the pressure of the fluid on the walls of the container or is it ...
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1answer
125 views

I have a somewhat silly question about pressure and atmosphere [duplicate]

The very basic calculation of pressure is <<$\rho gh$>>. So now if I keep myself in a totally enclosed room, then the force exerted by all the air above me should be cut out by the structure of ...
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3answers
616 views

Why aren't we crushed by the weight of the atmosphere?

I've read the answers to the similar question here on StackExchange but didn't find them satisfactory. People's answers were in short that we aren't crushed by the weight of the atmosphere because our ...
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2answers
140 views

Why we see things on distances we shouldn't see?

One person took experiment from Montenegro and with distance 201 km he saw clearly montains that are 1521 meters high. He was on 189 meters above the sea level. Official calculator says you cannot see ...
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0answers
36 views

What is the current limiting factor for GPS clock synchronization precision?

In the (slightly dated) paper 'Quantum Clock Synchronization Based on Shared Prior Entanglement' [R. Jozsa et al., Phys. Rev. Lett. 85, 2010 (2000)], the authors describe the GPS synchronization ...
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1answer
21 views

Localized electrostatic-acoustic disturbance

From this youtube comment it describes a 'localized electrostatic-acoustic disturbance' as a 'very rapid, sudden static charging of the atmosphere'. I've done some lite searching but haven't found ...
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0answers
78 views

High resolution atmospheric absorption spectrum?

I am looking for a high resolution (at least 0.5 nm) spectrum showing atmospheric absorption (particularly for oxygen and water) in the wavelength region of 600-800 nm. I want to find windows of very ...