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2
votes
1answer
178 views

Underlying physical basis of an exponential distribution

My data set of upper atmospheric cloud occurrences $N$ versus their thickness (or optical brightness, say $B$) show an exponential variation over more than two orders of magnitude - that is $N$ varies ...
4
votes
2answers
108 views

How does the correlation length of weather emerge?

The question is pretty simple: If I know the weather where I stand, I can estimate the weather 5 meters or 1 km away away pretty well, but I'll have a hard time guessing what the weather is, say, 50 ...
7
votes
1answer
274 views

Atmospheric Circulation

What is the simplest simulatable model giving our rotating earth its 3 circulation cells (Hadley, Ferrel, Polar)? The model should also show 1 circulation cell if the earth's rotation were stopped (or ...
21
votes
4answers
607 views

Why is lightning more rare during snow storms than rain storms?

Lightning and thunder during a snow storm is uncommon. As far as I know, more uncommon than during a typical rain storm. Why is this? I speculate it might be one, or both, of the following two ...
0
votes
0answers
53 views

Temperature change as function of solar elevation, current temperature, and cloud cover?

If it's 80F with clear skies, and the sun is at a 54 degree angle, what is the rate of temperature increase or decrease? More generally, where can I find a formula or approximation that takes ...
2
votes
1answer
1k views

How relative humidity and temperature affect rainfalls

The question is simple as stated in the title. How relative humidity and temperature affect rainfalls? I can't find a satisfatory answer in the web. Who can help me to understand me this relation?
1
vote
1answer
295 views

How can I estimate relative humidity ($e/e_s$) from temperature and dewpoint?

Background my goal is to estimate vapor pressure deficit ($vpd$) from Relative Humidity ($rh = \frac{e}{e_s}$): $$vpd = \frac{100 - \frac{e}{e_s}}{100} e_s$$ (from Hartmann "Global Physical ...
2
votes
2answers
131 views

What is the relation of the release time of fossil fuel emissions to climate change? [closed]

This question presupposes that The amount of fossil fuels on earth is limited Mankind will burn all of its fossil fuels eventually Based on these presuppositions, the total amount of CO2 released ...
0
votes
1answer
76 views

Why no image of the North or the South Pole Weather? [closed]

I was watching a youtube video which refers to National Geographic and other metereological sources that the US govenrment has banned access to the weather and metereological data of both Poles. What ...
1
vote
1answer
1k views

How to calculate Temperature Humidity Wind Index?

I would like to know how to calculate Temperature Humidity Wind Index (THW Index)? I know how to calculate Heat Index and Wind Chill. I am asking this because my weather station Davis Vantage Pro2 ...
1
vote
1answer
144 views

Which topics & books should I read to understand whirlpool, tornado, hurricane etc.?

I want to be expert to understand physics behind whirlpool, tornado, hurricane. Which topics are needed for this?
0
votes
2answers
3k views

Why is the temperature outside the airplane lower than the ground temperature?

seems the airplane is nearer to the sun, so the sun should more directly shine on the plane. But when I travel, the airplane temperature is much lower than the ground. Why is the temperature so low?
0
votes
1answer
303 views

Does regular sky clouds stops the sun's ultraviolet rays?

I have an argue with an ex-Doctor of Medicine about the amount of ultraviolet light reaching us under the clear day sun and under the 100% cloudy sky. To what extent we can say that the sky clouds ...
4
votes
1answer
659 views

Wind Turbine Impact

OK, I'm not sure this is not a silly question, but here goes. I've often wondered what the impact is of wind turbines on the weather. My question is, since wind turbines transform wind energy into ...
4
votes
2answers
698 views

What's the reason for the seasons?

In the diagram, it shows that the fundamental reason for different seasons is when the northern hemisphere is titled towards the sun there's summer in northern hemisphere and winter in southern ...
1
vote
1answer
4k views

Where can I find open-source weather forecast software? [closed]

Are there any software packages/frameworks for running weather forecast numeric models on a single PC? I've found at least two instances, but I'm interested to know whether there are more and where I ...
3
votes
1answer
821 views

Altering Venus rotational speed to match Earth's via weather manipulation

Venus rotates approximately 6.5 km an hour Earth rotates approximately 1650 km/h how fast could we speed up Venus's rotation via only weather manipulation ( maybe a giant fractal lens between Venus ...
3
votes
2answers
54 views

Determining cloud cover from observer to near the horizon

Does there exist a Clear Sky Chart with the following enhancements?: 1 - Actual Cloud Cover (Offered Visually and not just Colors with a Legend, Over Time/Past & Predictive) 2 - Simulate/Predict ...
4
votes
2answers
134 views

Lumped circuit model of Earth and Sun as a thermal system

I want to design a thermal model of the Sun heating up the Earth. The circuit below is my own design (I don't know if there is a better way to model it. If there is, please tell me.). I want to ...
7
votes
5answers
8k views

How can I prevent being zapped by static electricity every time I touch a doorknob or handle in the office?

I don't know what it is about this office, but it seems everything I touch (doorknob, bathroom faucet, edge of kitchen sink in the break room), I get zapped by static electricity. It's getting old. ...
4
votes
2answers
149 views

The visibility of air

For pilots of gliders or sailplanes, the 'thermal' is the most important phenomena of the air. A thermal is classically described as an upward flow of air caused by ground level heating of air that ...
1
vote
2answers
142 views

Does “sea level temperature” exist?

When reporting barometric pressure, weather stations normalize the result to sea level using a well-known formula (approximately, add 1 inch to the measured pressure for every 1000 feet above sea ...
26
votes
5answers
3k views

Have we figured out how to analyze turbulent fluids?

I was surprised to read that we don't know how to analyze turbulent fluids. On page 3-9 of The Feynman Lectures on Physics (Volume One), Feynman writes: Finally, there is a physical problem that ...
5
votes
1answer
312 views

Why is UV index so high when storms are announced?

Everytime I check the weather news and storms are announced, the UV index is very often (if not always) "very high" or "extreme", why is that?
1
vote
3answers
5k views

How air humidity affects dry process of a washing?

I've noticed that during wet weather my washing does not want to dry. Is it because of lower temperature, or because of air humidity?
3
votes
1answer
252 views

Physicality of claims regarding AC ice energy storage units

Many of us may remember the problems from thermodynamics where we had to determine if a pretend air conditioning unit supplier's claims violated the 2nd law. I want to pose a similar question ...
5
votes
1answer
50 views

How does atmospheric seeing evolve over time?

I am writing an automated target selection application in which the seeing at the time of observation is an important factor: some fields are important to observe under good seeing, others, less so. ...
10
votes
2answers
346 views

Is this a weather phenomenon or an instrumental artifact?

The radar image of the midwest provided by Weatherunderground at 10:30 PM Central time, May 8 2011 has odd patterns. Are these patterns real? Perhaps caused by large scale convection over cities? Or ...
0
votes
3answers
1k views

Does opening or closing the window in a non-AC car in the summer affect how much heat is felt inside?

This will perhaps look like a very basic and trivial question. But I find it confusing. As an experience, when you are travelling in non-AC car in summer, have people felt if putting on or putting off ...
5
votes
1answer
2k views

How do AM radio signals change with time of day?

I know that AM radio station signals fluctuate in quality with time of day because of changes in the ionosphere. How do these changes trend with time of day?
1
vote
4answers
387 views

'A' butterfly effect

If a butterfly did not flap its wings some time ago, but instead decided to slide for that millisecond, can this cause a tornado on the other side of the earth if we just wait long enough? Does this ...
13
votes
3answers
644 views

How to calculate the upper limit on the number of days weather can be forecast reliably?

To put it bluntly, weather is described by the Navier-Stokes equation, which in turn exhibits turbulence, so eventually predictions will become unreliable. I am interested in a derivation of the ...