Questions tagged [convection]

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Drawing the cloud cover bar of Skew-T plot

I'm trying to display cloud cover info by altitude from sounding data in a compact widget of an app for free-flight pilots. It's basically the vertical bar showing different shades of gray according ...
• 131
52 views

How do higher-latitude convection cell currents (Ferrel, Polar) work?

I'm a forest ecologist and college professor who has been teaching about the Earth's convection cell circulation for many years. Explaining Hadley cells is very straightforward with differences in ...
1 vote
36 views

Do Self-Aggregation Simulations Depend Crucially on Radiative-Convective Equilibrium (RCE) Initial Conditions?

I've been reading papers on convective self-aggregation, such as Bretherton (2005) and Khairoutdinov (2003), and it's not clear to me why (or whether) self-aggregation depends on the model being ...
• 173
1 vote
139 views

If I build a concrete surface on a 1km x 1km area and painted it black, will I create convection (updraft from ground)?

Providing there are low wind conditions and a clear sky, will the 1 km x 1 km black surface create an upward convention? Let’s say I were to do this at 60$^\circ$ N longitude in march month, the ...
201 views

What "blobs" of molten material in Earth's interior are responsible for the rapidly moving north pole? Where are these blobs exactly?

IFL Science's Earth's North Magnetic Pole Is Heading Towards Siberia – And Scientists Now Know Why explains that the motion of Earth's north magnetic pole can be understood as follows: A new study, ...
• 7,074
1 vote
579 views

Milankovitch cycles and what?

Observe the vertical green lines in this diagram: Those events shows when temperature starts to sink when radiance is at top or even before that. If there was a simple connection between radiance and ...
• 381
1 vote
239 views

What could cause a turn from global warming to global cooling?

Except a hypothesized orbital forcing! Ice cores shows that there are several irregular sharp temperature peaks in between of the big 100,000 years glaciations. What could cause those peaks? Almost ...
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2k views

Why do the dry and moist adiabatic lapse rates converge with height?

Near the surface, the slope of the moist adiabats are much steeper than dry adiabats due (as I understand it) to the the latent heat released as water vapour condenses. The difference is amplified at ...
372 views

Laboratory simulation of the Earth's magnetic field

I remember reading an article where a scientist was able to make a spinning iron tube with liquid nickel inside and it created a magnetic field, providing a laboratory-scale simulation of the ...
389 views

How can you explain this storm phenomenon?

It's been a while since this happened, so I don't have many details. About 3 years ago, we had a popup storm here in Louisville. It was completely unexpected and unpredicted. That's not the strange ...
• 223
312 views

Is Mars' mantle homogeneous or heterogeneous and what might this say about mantle convection?

A supervisor of mine made an off-hand comment about the fact that Mars used to have plate tectonics, and there is evidence that Mars used to have plate tectonics, however now it does not. The theory ...
• 1,715
605 views

Are mantle plumes distributed around the core randomly or in a known pattern?

Background: The theory of mantle plumes is useful (although controversial) in explaining the occurrence of intra-plate volcanoes. The website here suggests that "hotspots" exist in fixed locations ...
• 7,576
2k views

What causes 'positive' lightning to be rarer, higher charged, and longer lasting than 'negative' lightning?

Why is 'positive' lightning rarer, brighter, higher charged, and longer lasting than 'negative' lightning? Are there any other unique characteristics to positive lightning that sets it apart from ...
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