# Tag Info

Accepted

### What factors determine the number of Hadley cells for a planet?

Well for one, this will surely be the speed of planetary rotation and the wind speeds your atmosphere can generate in North-South-direction. In my understanding those cells form as N-S winds flow and ...
Accepted

### Why are deserts mostly located on the western side of continents?

Some of the driest deserts on Earth occur in the western side of continents and they are called Coastal Deserts. Examples of such deserts are the Atacama desert (Chile, the driest desert on Earth), ...
• 14.7k

### Why does the Hadley cell descend at 30 degrees?

The Hadley cell was proposed and works only for a non-rotating earth. When we consider the earth's spin, we have to consider the Coriolis force as well. Because of this force air cannot travel in one ...
• 745
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### How long does it take for the atmosphere to mix?

The time scale of interhemispheric tropospheric transport is in the order of one year (Chapter 4 of the book Introduction to Atmospheric Chemistry written by Daniel J Jacob). This is not an exact ...
• 1,662
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### Why does the meandering pattern of the jet stream itself propagate?

I wouldn't characterize the movement of the jetstream as a "less well known" problem, at least not to anyone who has sat through a synoptic meteorology class. The jetstream from a dynamic point of ...
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### Is everything affecting everything on Earth?

Do you know what the weather will be in four hours time? You can probably make a very confident guess. How about this time tomorrow? You can probably make a reasonably confident guess. How about this ...
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### Why is Egypt so dry?

If you take a look at the atmospheric circulation pattern, the Hadley Cells in particular, they tell the story. The northern edge of Africa is on the descending edge of a Hadley Cell, which means ...
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### Why are deserts mostly located on the western side of continents?

Because of the Coriolis Effect, the prevailing winds on the earth between about the Tropic of Capricorn and the Tropic of Cancer go from the East to the West (knows as the Trade Winds). To get to the ...
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### How to install ESMF and ESMFPy in Ubuntu using gfortran, gcc, python?

First download the esmf tar file from http://www.earthsystemmodeling.org/esmf_releases/public/ESMF_7_1_0r/reg/ESMF_Framework_Down.html Then install netcdf library and gfortran compiler using ...
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### Why do the dry and moist adiabatic lapse rates converge with height?

If you look closely at the diagram you'll notice height isn't the primary cause for the convergence between the adiabats, though it is the driver. Note that toward the upper right there is still ...
• 13.9k
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### Relation between direction of shear and tropical cyclone formation

The direction of the vertical shear plays a large role in cyclogenesis, where easterly shear tends to enhance the formation of cylones and westerly shear tends to suppress it (Tuleya and Kurihara, ...

### Is everything affecting everything on Earth?

The media loves the butterfly effect, but they also love to mis-portray what it means. When Lorenz gave his talk "Predictability: Does the Flap of a Butterfly’s Wings in Brazil Set Off a Tornado in ...
• 20k
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### Why does the El Niño Stop?

I think it is important to think of the El Niño as just one of the components of a large scale global atmospheric-oceanic phenomenon known as the El Niño and the Southern Oscillation (ENSO). ENSO ...
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### Monsoonal interactions with mid latitude disturbances

Here are two parts of an answer, but this is by no means complete. Most monsoonal research is focused on explaining the monsoonal passage through the plains of the Indian subcontinent. Very few ...
• 6,208
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### How do academics/institutions run large climate simulations given the computing challenges?

This question is a little vague, with multiple aspects, but I shall do my best. Computing resources Some universities have their own clusters or supercomputers. But many countries also have regional ...
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1 vote

### Can we see the circulation cells in wind maps?

Yes, the wind cells are just a toy model, where we can suppose that the homogenity of the Earth and other things. But there are other things and Earth isn't same on the all points, so the ...
• 618
1 vote

### Temperature Advection using finite differences with gridded data

I've come to a solution. I have followed @gansub's suggestion to check what there is already there, before reinventing the wheel. I found MetPy's code very (too) well structured, so the code for ...
• 587

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