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Questions tagged [coriolis]

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1answer
53 views

Beta plane approximation: variation of Coriolis parameter

The Beta plane approximation put me in confusion. Beta plane approximation explain me how the Coriolis parameter changes with latitude. Beta parameter changes with the cos(latitude) but this is ...
3
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0answers
42 views

Why an inertial gyro has a frequency and a geostrophic gyro does not?

Inertial flow is given by the balance between Coriolis and centrifugal forces. A geostrophic flow is given by a balance between Coriolis and the gradients of pressure. The frequency of the inertial ...
5
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0answers
122 views

Why do Mediterranean main currents surrounding landmasses turn counter-clockwise?

At North Hemisphere, main superficial currents turn clock-wise, because of Coriolis Effect. I would expect on Mediterranean Sea to have currents turning in the same sense, but, surrounding landmasses,...
5
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3answers
1k views

Does the Coriolis Effect affect a wind from East to West?

I'm studying meteorology for a pilot license and there I was taught as a rule of thumb that wind at higher altitudes is approximately turned 30° clockwise to the wind on the surface due to the ...
3
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2answers
570 views

Coriolis effect discrepancy. How to deduce the direction of the effect?

From what I understand (please correct me if I'm wrong), the Earth rotates counterclockwise as viewed from the north pole. That means from the perspective of the equator to the north pole, it is ...
4
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1answer
291 views

If a prevailing wind traveled due east in the Northern Hemisphere, would the Coriolis Effect act on the water?

I am in a Marine Environmental Science II class, and we are discussing the Ekman Spiral. As I understand, the Coriolis Effect does not occur when whatever is observed does not change latitude. So, if ...
8
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1answer
2k views

How does the Coriolis effect affect rivers and estuaries

I'm quite confused about this since it is said to influence major currents in the sea the winds to the formation of gyres in the ocean and as well as influencing the weather at times due to the planet'...
3
votes
2answers
347 views

If North America were in the southern hemisphere, would the mountains and high desert have to be -east- of Tornado Alley?

I've been trying to collate the reasons why Tornado Alley in North America is what it is. So far, I have the following: The continental landmass is in the mid-latitudes (where the polar jet has the ...
4
votes
1answer
134 views

Can Coriolis Effect cancel itself?

Say a plane moves from 40° North to 40° South, and the plane flies in straight line without considering the Coriolis effect. Will it still reach the destination. All I mean is whether the deflection ...
6
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1answer
720 views

ocean current frequency

In this paper by Muller and Garrett it is stated: It is a standard expectation that currents in the ocean interior with frequencies much less than the Coriolis frequency will lead to an Ekman ...
2
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0answers
368 views

In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason? [duplicate]

Update: Granted the question has been asked in different form; but the answer still escapes me. At one place I read that locations in question have low sea-surface temperature. At ...
8
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0answers
257 views

What are black-hole ocean eddies?

How are they formed? Why are they so stable? What finally breaks them apart and what is their typical lifespan? Why are fluid particles trapped inside it and advected towards the center? How do they ...
32
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3answers
4k views

Why does Coriolis determine the rotation direction of a cyclone but not my drain?

It is a common misconception that Coriolis is responsible for the direction the water swirls down a toilet, tub or sink drain. E.g. does a toilet flush the other way in the southern hemisphere? (If ...
5
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3answers
150 views

coriolis force in atmospheric/ocean modeling

The Coriolis force is not a real force, but depending on the reference system and how it does refer to an inertial system. Could this Coriolis force as widely used in atmospheric/climate modeling be ...
16
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2answers
13k views

Coriolis effect and Cyclones

The Coriolis force predicts that winds in the northern hemisphere should be deflected in a clockwise pattern and winds in the southern hemisphere should be deflected in an anti-clockwise pattern. Why ...
16
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1answer
5k views

What do quasi-geostrophic and ageostrophic mean?

I know that geostrophic flow means straight wind flow that is balanced by the pressure gradient and Coriolis forces. But what do quasi-geostrophic and ageostrophic mean specifically?
82
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3answers
27k views

Impossible or improbable? Hurricane crossing the equator

No known hurricane has ever crossed the equator. Hurricanes require the Coriolis force to develop and generally form at least 5° away from the equator since the Coriolis force is zero there. Are ...
18
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4answers
512 views

Is there any simple way of using the Coriolis effect to determine what hemisphere you are in?

I have heard from many people that sinks do not empty in a particular pattern depending on what hemisphere you are in, but I have also heard from people who adamant that a sink of water would empty ...
13
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1answer
190 views

How do Kelvin waves determine surface temperature variations?

Kelvin waves are basically waves that balance out the Coriolis force against topographic boundaries like coastlines and mountains. It seems very important in the oceans, for example. My question is ...