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0
votes
1answer
27 views

Does Sunrise and Sunset affect the weather?

I've been asked to study on any phenomena related to Weather and Climate. While thinking about this, I noticed that each day, there was a small difference on sunrise and sunset. Like, at one day it ...
0
votes
3answers
98 views

How many volcanic eruptions would be necessary per year to neutralize global warming?

Volcanic eruptions sometimes cool the earth. How many eruptions of what magnitude, locality and type would be required per year to neutralize Global Warming?
25
votes
2answers
3k views

Why is the sun brighter in Australia compared to parts of Asia?

Background: I've lived in Philippines for several years, and visited other parts of Asia occasionally (Singapore, Indonesia, Hongkong). I just moved to Western Australia a few months ago and I ...
0
votes
2answers
32 views

How to measure rainfall? And how is it determined for a specific location?

How is rainfall measure in a pinpoint location? This is what I think: There are automatic rainfall measuring stations at: A, B, C. But say I want to know point D, located between A and B, its ...
-2
votes
1answer
32 views

How can I get average numbers of days wind flow from 16 direction? [closed]

Wind flow from North direction a nos. of days, Similarly from North East b nos. of days, East c nos. of days, South East d nos. of days, South e nos. of days, South West f nos. of days, West g nos. of ...
-1
votes
1answer
48 views

Determine the number of days with North-East wind direction from the number of days with North and East wind direction? [closed]

I have some data like: Wind flow from north direction = “X” Numbers of days. Wind flow from east direction = “Y” Numbers of days. Then is there any formula to know numbers of days wind flows ...
2
votes
2answers
77 views

Fork and Sheet Lightning

I've noticed that during British lightning storms, I have only ever seen sheet lightning However, on holiday in other countries, I frequently see Forked Lightning Q) Is this just caused by ...
0
votes
2answers
45 views

How laminar or turbulent is air?

Consider an outdoors scenario, with good weather and no sensible air currents at the floor level. How turbulent or laminar is the air surrounding this environment?
1
vote
0answers
28 views

What causes charge buildup in a cloud before a lightning storm?

I am curious what causes the charge build up in a cloud before lightning occurs. I have seen in a few places such as this, that the process is not fully understood. Is this some form of static ...
0
votes
2answers
71 views

force of hail falling straight

There is a hail storm and it's falling straight down (0 wind factor) will the hail meet a moving car with greater force than a car standing still?
20
votes
1answer
997 views

Can rain evaporate?

Are there any atmospheric condition under which a visible raindrop can fail to hit the ground by evaporating first? I imagine this would require a large vertical temperature difference, and possibly ...
3
votes
1answer
45 views

Why formation of rain is adiabatic?

I recently went through the wikipedia page for Rain. It said that There are four main mechanisms for cooling the air to its dew point: adiabatic cooling, conductive cooling,.... It proceeds as ...
8
votes
2answers
203 views

Why do clouds fly? [duplicate]

I know it's probably the most stupid question there is, but why do they fly are the clouds lighter than air? What's keeping those tiny ice structures floating miles about the ground? I've been looking ...
2
votes
2answers
48 views

Why do tropical cyclones not tear themselves apart?

A tropical cyclone is the generic term for a hurricane, typhoon, or tropical storm. Tropical cyclones derive their energy from evaporation of water at the ocean surface which ultimately recondenses ...
36
votes
6answers
3k views

Without seeing the lightning, can you tell how far away it struck by how the thunder sounds?

Is there any way to tell how far away a lightning strike is by how its thunder sounds? I thought one way might be by using the fact that higher frequencies travel faster than lower frequencies. Would ...
0
votes
0answers
13 views

Is it possible to determine which kinds of 10 basic cloud type will form by reading skew-T graph?

Is it possible to determine which kinds of 10 basic cloud type will form by reading skew-T graph? Also, can I determine the top and the bottom of the clouds by skew-t graph?
2
votes
0answers
111 views

How far we can see in the thickest possible fog?

There is quite foggy day today here, I cannot see end of the street. This made me think about how much worse can it be. So here is my question: how thick a fog can be? What's the smallest visibility ...
2
votes
2answers
636 views

Does humidity make winter air feel colder?

I sometimes hear stories where people compare their feelings in winter in different places in the world. It goes like in city X the temperature was the same as in city Y, but the humidity made me ...
5
votes
1answer
104 views

How can I estimate confidence intervals around the forecasted temperatures for future days?

Weather.com will happily give me temperature predictions for the next ten days, but no indication of how reliable those predictions are. So if I want to plan something for a week from today, or four ...
5
votes
1answer
126 views

How long did the first rainshowers on Earth last?

When I was a child, I read many times over with fascination about the formation of the Earth in a large illustrated encyclopedia of sorts for adults (one of at least two volumes, though I will ...
2
votes
4answers
233 views

Does an object's movement affect the likelihood of being struck by lightning?

Does the state of whether an object if moving or stationary affect the likelihood of it being struck by lightning? I suppose some things that could be considered would be: Whether the movement ...
1
vote
1answer
334 views

What's the altitude of the flat base of Cumulus clouds?

Is there a formula that describes the altitude of clouds with respect to the local temperature? I think of the flat bases of Cumulus clouds. Thanks...
13
votes
2answers
231 views

Why do clouds form in lumps?

What forces drive the water vapor to form the shapes every child draws? Why isn't water vapor forming an uniform mist layer consistently (which it some times does)? I have two general ideas how this ...
6
votes
1answer
219 views

How to derive a physical model of temperature above the earth surface?

At a point on the surface of the Earth, if I go straight "up" a distance $z$ (radially outward from the Earth), I'd observe a temperature profile $T(z)$. The conventional wisdom from the meteorology ...
2
votes
1answer
286 views

Why is the rainy season in the winter for some (mediterranean?) climates and in the summer for other (tropical?) climates?

Generally speaking, the rainy season is in the summer in tropical climates, and in the winter in mediterranean climates. (I admit that is a gross oversimplification) What is the cause for this ...
3
votes
1answer
82 views

How does irradiance behave over time?

I am trying to clarify data on weather from the Royal Netherlands Meteorological Institute (KNMI); I have incorporated the Solar Position Algorithm (SPA), such that I can calculate sunset and sunrise ...
1
vote
1answer
392 views

What is the effect of humidity in temperature?

Suppose we have a building in an area with weather conditions $W_t$ at time $t$, and suppose we could change the relative humidity $\phi_t \in W_t$. Would the change in relative humidity $\phi_t$ have ...
2
votes
1answer
122 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
90 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
176 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 ...
20
votes
4answers
405 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
43 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
679 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
222 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
116 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
72 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
679 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
122 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
2k 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
167 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
503 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
526 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
3k 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
700 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
42 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
82 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 ...
5
votes
5answers
4k 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
145 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
134 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 ...
22
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4answers
2k 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 ...