Questions tagged [air]

The tag has no usage guidance.

25 questions
Filter by
Sorted by
Tagged with
13 views

What is a good model for extracting current air density vs altitude data at a given latitude and longitude?

I would like to estimate in real time the air density at a given altitude at a particular position using python. Is there a model I could utilize?
31 views

Wind speed vs attitude model

I am looking to model wind speed with altitude in real time. I am currently using a GFS model: https://nomads.ncep.noaa.gov/dods/gfs_0p25_1hr/gfs20240616/gfs_0p25_1hr_00z.info I am curious as to what ...
55 views

Effect of changes in the air's nitrogen-oxygen-carbondioxide proportions

I recall (although, perhaps wrongly), from my PADI scuba diving books, that air is made up of 78% nitrogen, 0.8% CO2 and 1.2% O2. I was wondering, what would happen to our lungs (or to that of any ...
1k views

Does air in the atmosphere get friction due to the planet's rotation?

Does air in the atmosphere suffer friction in some way due solely to the planet's rotation?
• 201
70 views

Why is latent heat of water vapor included in specific enthalpy of moist air?

In a lecture book we read about latent heat of moist air. I would have guessed, that the total specific enthalpy of moist air, comprised of $m_d$ kg of dry air and $m_v$ kg of water vapor is (we have ...
• 935
128 views

How to remove effect of topography on Air temperature in Excel?

I traversed a route in a city. The route has different elevation. So I need to remove the effect of elevation from my air temperature measurements. The measurements done by temperature data logger ...
• 33
129 views

Air pressure, fronts and temperature

I have spent hours on this topic and I seem unable to make sense of it. If air moves from high pressure toward low pressure, and wind is the movement of air due to differences in pressure, how can, ...
1 vote
762 views

What is the current atmospheric concentration of $\small\sf{CO_2}$ in the atmosphere in atm (or bar)?

For some reason, I can only find the answer in ppm and I don’t know how to do this conversion.
• 233
1 vote
49 views

Maximum Air Temperature Decrease Over Time

Based on the maximum air temperature Time series plot plot below. What could be a possible reason(s) for Maximum Temperature to ...
• 111
1k views

How do meteorologists accurately measure outdoor air temperature? There's sunlight, local trapping of air, radiant heat, precipitation

I'd like to know how the state-of-the-art meteorological direct, localized measurements of the temperature of the air is measured. If you put a thermometer in sunlight it may read high. If you put it ...
• 7,052
3k views

What is the relationship between air pressure and temperature?

I'm trying to reconcile a paradox regarding air pressure and temperature. On the one hand, compressing air heats it up, while expanding it cools it. So density and temperature are proportional. On the ...
• 123
1 vote
46 views

Could climate change make air unbreathable? [duplicate]

A lot of the press discussion, IPCC information and scientific inquiry about climate change refers to changes in the temperature of the atmosphere. I have not seen debates about changes in the ...
• 756
90 views

What would happen to the earth if we removed nearly all of the air? [closed]

I wanted to know : what if someone pulled a really strong vacuum and prevented any air to enter. Would the earth be destroyed or nothing much would happen? I am not talking about the people and other ...
• 31
1k views

Do perfumes and deodorants contribute to global warming?

If perfumes and deodorants cause air pollution, does that mean they also heat the planet?
1 vote
137 views

Why is the concentration of nitrogen gas almost equal in soil air and the atmosphere?

From the composition of soil air, we know that oxygen is much less than that of atmospheric air. On the other hand, carbon dioxide is higher in soil. However, nitrogen gas is very much similar in both ...
• 345
301 views

What was the oxygen concentration in the air during the late miocene period?

As the title says, I'd like to know what the O2 concentration was during the late Miocene period. I've tried to look this up but I'm having a hard time finding any conclusive data on it, or even any ...
• 23
1 vote
259 views

Does Start / Stop technology in cars have an impact on air quality? [closed]

I have repeatedly heard from various car enthusiasts that start stop technology has no benefit (or the tiniest smallest negligble benefit) to air quality so they turn it off entirely. Does it have an ...
• 141
284 views

If a specific mass of air is polluted, will the pollution stick with it?

Let us say a car pollutes 1m3 of air. Is that pollution attached to that specific air mass or will it fall to the ground or take its own path through the air, independent of the air it first polluted? ...
192 views

Do sound waves from volcanic eruptions travel around the world?

Do sound waves from volcanic eruptions travel around the world? I recently read about the Krakatoa eruption and how sound waves from that eruption traveled around the globe 4 times and were detected ...
• 51
23k views

Why does warm air "hold" more moisture?

It is often explained that warm air holds more water because warmer water is less likely to condense. This and other explanations just seem to be circular arguments. If the warmer air picks up enough ...
• 271
796 views

When it is said that air moves from warm object to a cold object, how is it possible that air moves from high pressure area to low pressure area?

By air moving from high pressure area to low pressure area means that it's moving from colder area to a warmer area, are they both not contradictory? I might have understood something in a wrong way, ...
• 133
2k views

Is volume of air increasing as CO2 levels increase?

CO2 levels are increasing, they have crossed 400 ppm, which means that of every million gas molecules in the air, 400 are of CO2. It has been increasing. Does that mean the total volume of air in the ...
• 415
2k views

Where do bad smells eventually go?

Suppose that I haven't taken a shower for a while, or haven't disposed of my trash, or something, and the room I've been in now stinks. Then, to remove the smell from the room (presumably after first ...
• 281
802 views

Why is the Earth's shadow blue?

After every sunset, once the sun is gone, I always enjoy seen the belt of venus rising in the other side, followed by the Earth's shadow. This is a picture I took (you will find better ones online). ...
• 17.7k