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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51 views

How is the spin of hurricanes explained from an inertial frame?

I have read that hurricanes spin because of the Coriolis effect. Since the Coriolis force is a ficticious force, which is only present in a frame that is rotating w.r.t. to an inertial one, I am ...
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Can you cook a chicken by deorbiting it?

Let's say Astronaut Blumenthal aboard the ISS has a brilliant idea. Instead of bothering with boring conventional ovens and stuff, he jettisons a whole, uncooked chicken out of the airlock. The idea ...
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Gas pressure without a container [closed]

Gas pressure needs a container for pressure. Yet science tells us that the atmosphere is the container. This impossible
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How high could a dust particle go?

I was observing a construction work this morning. A kind of bulldozer was moving things on the ground and the dust waves (?)/clouds were illuminated by the sun behind. From my POV it seems that the ...
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2answers
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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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What would be Earth's temperature under a very efficiente greenhouse atmosphere?

Assume that Earth has an atmosphere made out of a very efficient greenhouse gas (e.g. a very, very thick wator vapor atmosphere). In that case, what would be the surface temperature (or the ...
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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 ...
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The Cause of lightning and charge distribution in clouds

I was going through this video about lightning and I couldn't understand some points . 1: What caused the water molecules in ice crystals to be arranged in that specific pattern i.e. having positive ...
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3answers
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Why is the atmospheric pressure under a roof and on open land the same?

If someone stands on the ground exposed to the open sky the atmospheric pressure experianced by him will be the same as someone under a roof (which is not part of a sealed box), this is very intuitive ...
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1answer
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What are these strange rays in the sky?

While driving, I noticed the sky had weird rays that appeared converge at some point on the horizon. I took a few pictures in hopes I could figure out what they were. There was a storm coming from ...
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1answer
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Shipping Products to a Low Air Pressure Area

We shipped a container of wet wipes packages by sea and when the container arrived to the port it was unloaded and the packages were verified to be ok. Then, it was loaded to a truck and shipped to a ...
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Polarization of sunlight by the earth's atmosphere

I have just learned that sunlight traveling through the earth's atmosphere picks up a net polarization by collisions with molecules ($O_2$, $N_2$, etc.) that the photons encounter. One would think ...
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Atmospheric orbital velocity profile

In a general scheme of a planet rotating with angular speed $\omega_p$, ignoring the formation of convection cells, and asuming that surface layer rotates at $\omega_p$ as well, Is there a difference ...
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Simple analytical model for fluid flow in “Mushroom cloud”

In potential flow theory there are simple analytical models (formulas) for velocity-field of elementary features (like source, sink, dipole, vortex etc.) Is it possible to write simple analytical ...
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1answer
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how to calculate how high would a helium balloon with weight go? [closed]

I knew that one liter of helium would lift approximately 1 gram of mass. However, I could not find how to calculate how high would that 1 gram go. Imagine if we have a helium balloon (ignore the ...
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1answer
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Why atmospheric pressure exist related?

My Question is That? There are a variety of gases that are in our atmosphere. They all together create an atmospheric pressure. why this pressure exist I mean look at outside the earth there is ...
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1answer
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Can atmospheric humidity act as a cloud chamber?

According to wikipedia vapor supersaturation is relatively common (20-40% of the time) in the upper troposphere. Assuming perfect conditions (such as sufficient visual contrast and no wind), would it ...
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1answer
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Is atmospheric pressure balanced on an object as it moves?

Consider a box sliding along a friction-less floor at a constant velocity. Now typically atmospheric pressure is 14.7 psi on all surfaces of the object. But if it is moving at a constant velocity, ...
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1answer
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Are fireballs in the wrong direction?

So I was just reading about satellites burning up in the atmosphere. The book pointed out that it wasn't the gravitational velocity (towards the earth) that caused objects to burn up (which makes ...
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1answer
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By what equation the future temperature predictions are made? [closed]

I'm a Ph.D student in plasma physics but interested in learning physics behind climate modeling and predictions. I want to begin with studying what equation is used for the future temperature ...
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In an electron beam in the atmosphere, is the light region of the beam under low pressure compared to atmospheric pressure?

In an electron beam, is the light region under pressure below atmospheric pressure? Motivation of my question: In the cathode ray tube, the cathode ray (electron beam) becomes luminous and visible ...
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1answer
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Reaction of radiation with Nitrogen-14

When solar wind brings high energy neutrons into contact with Nitrogen-14, a well known process occurs yielding Carbon-14 + a proton. N14 is assumed to exist in upper atmosphere as N2 gas, but the ...
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2answers
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Why the lighter gas, nitrogen, does not rise above oxygen in Earth's atmosphere? [duplicate]

It is known that the atmosphere consists mostly of oxygen and nitrogen, with oxygen constituting about 21 % and nitrogen 78 %. Since released helium and hydrogen gases rise upwards in the atmosphere, ...
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Why is the sky *uniformly* blue?

I've read a lot of answers to the questions why the sky is blue. However all the answers I found contain mostly qualitative analysis: Rayleigh scattering is changing the direction of blue light, so ...
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1answer
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In spectroscopy, what element does green indicate presence of in the atmosphere?

And what element does visible green glow indicate in our own atmosphere? https://youtu.be/HDlsdVuv6qQ
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1answer
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Why does the moon sometimes look reddish yellow?

So the question is clear from the title itself. Only sometimes does the moon when it just rises above the horizon, looks reddish in colour. This mostly as I have seen occurs when the moon rises when ...
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1answer
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Can pressure gradient force be balanced by Coriolis force?

I was learning about wind from my class textbook. In that there is first a description of forces affecting the velocity and direction of wind followed by that is geostrophic wind. My question is: At ...
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Explanation for an unexpected rainbow

Yesterday, I observed an unexpected rainbow in the sky. There was no forecast for rain, neither was it raining anywhere nearby. I have been trying to find an explanation but don't seem to find any. ...
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2answers
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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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3answers
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How can global warming occur in spite of Energy Balance?

The Greenhouse Gas Theory maintains that an increase in carbon dioxide will cause a corresponding increase in Earth's temperature. But this temperature increase will cause an increase in the flow ...
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0answers
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Does level of pollution determine if a rainbow will be formed? [closed]

Today I saw a rainbow after almost a decade. I live in Noida (a city) in India. Most people I know believe that: we don't see rainbows nowadays because of pollution and now after nearly 3 months since ...
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2answers
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Why is cold air drier than warm air?

I know this has been asked before but i could not understand the replies. If someone has a simpler answer please do so. My simple Geog lesson just said that warm air molecules are further apart ...
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1answer
31 views

Rainbowish phenomenon outside my home [closed]

I took a photo of an amazing sight I had never seen outside my home ( southern india ) but I could not tell if it was a rainbow type thing or an aurora borealis. Can someone tell what this is and it’s ...
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0answers
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Why hot air cools off when it rises and expands? [closed]

I know that when air is heated it will have a high temperature that leads to high kinetic energy of particles,high pressure, low density. But, why when hot air rises and expand they get cold ? ...
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1answer
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If you were to fire a laser or maser into space, how much of its energy would be lost to the atmosphere?

I'm very interested in knowing about how much energy would be lost to the atmosphere if you fired a laser or maser into space. I know the laser would probably diverge quite a bit over that distance, ...
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Air Pressure & Atmospheric Pressure

I know that when air is heated it expand, and thus it makes density decrease, pressure increase, and temperature increase. But, why hot air cools off when it expands and rise ? Please answer with a ...
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Best Resources for Learning Mathematics Behind Weather Forecasting

Anyone know what the standard texts and papers are for understanding how modern ie numerical weather forecasting is done?
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3answers
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By what mechanism does a solar flare overload electronics?

I apologize for my ignorance, but I lack the underlying knowledge to meaningfully research this myself. My knowledge of both Solar Flares and EMPs comes almost exclusively from pop-sci reading. I've ...
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1answer
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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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2answers
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Fluid Dynamics and Pressure Difference

We all know that air is a fluid as it can blow and we say that the cause of this blow is pressure difference but my question is what creates this pressure difference? Is it related to Earth's motion ...
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Tropical Cyclone Boundary Layer

A tropical cyclone moves over the ocean before making a landfall. So, when we talk about the boundary layer of the tropical cyclone (TC) at a point, is it actually the marine atmospheric boundary ...
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If Earth were to be ejected from the solar system, would geologic functions slow, halt, or continue?

I tried asking this question of the Science Fiction and Fantasy stack exchange but they told me to come here. I just got done reading Philip Wylie's When Worlds Collide and was curious about some of ...
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1answer
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Math behind helium balloons lifting objects to (almost) space

So I've seen those big helium balloons that are not even filled all the way up, but they still manage to reach heights of up to 30 km. I think they're mainly used for research and etc. Furthermore, I ...
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1answer
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Why do all heavier gases in the atmosphere not settle down to the surface? [duplicate]

Some pollutants heavier than air that are released into the atmosphere include $\text{CO}_2,\text{SO}_2,\text{SO}_3,\text{NO}_2$ etc. Since these gases are heavier than air, Why do they not settle ...
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How to calculate thermobaric heating and decelleration when object go from space into atmosphere (2D)

I'm making 2D game where ship landing from space to planet. I want to add atmosphere to planets with gradient density depending on height. And I want to use this atmosphere for converting object speed ...
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1answer
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Function of solar radiation spectrum

I want to calculate the area under a curve between 250nm to 300nm to find the irradiance in [W/m2], to do this I think must find the function of Spectral Irradiance (sunlight out the atmosphere, ...
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How to calculate air density at altitudes higher than 86km?

Barometric formula is fit up to 86km. Is there a sufficiently nice approximation for what happens above (e.g. thermosphere where molar mass isn't constant anymore)? I understand air is much thinner ...
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1answer
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What would be a beginner's book on radiative transfer?

I want to learn the basics of radiative transfer for my reasearch, which is on planetary sciences. I am looking for a book that would give me the basics of radiative transfer (the mathematics involved)...
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1answer
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Does night sky cooling need clear sky and why

I think I understand what radiative cooling is in general. Each body which is at a non absolute zero temperature would emit electromagnetic waves and loose energy. Now when it comes to night sky ...
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59 views

Why does a water bottle contract after I put it in the fridge, then expand when I open the lid?

Whenever I finish a drink of water bottle, I screw the cap back on the plastic bottle and put it in the fridge. The next time I unscrew the cap, even just a little bit, the bottle expands as if the ...

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