Community Digest

Top new questions this week:

Why does the temperature change about every 50-100 meters near hills

So I was in this place called Chamundi hills, Mysore. I was riding back at around 7pm down hill and noticed this strange behavior. About every 50-100 meters the temperature fluctuated. It was ...

meteorology temperature  
user avatar asked by Arun Gowda Score of 17
user avatar answered by Mehmet Karatay Score of 29

Why don't terrestrial storms heat up the upper atmosphere?

I was reading some articles on Jupiter, when I stumbled across this article, which said that the Great Red Spot makes the upper atmosphere really, really hot. As in "hotter-than-lava". This ...

atmosphere tropical-cyclone storms turbulence  
user avatar asked by ArktourosUltorMaximus7600 Score of 8
user avatar answered by Moist_occlusion Score of 3

How has the total area of continents changed during the Earth history?

Earth's total land area has increased throughout its history according to this video. What is the dependence of the total area of continents from time?

geology earth-history paleogeography continent continental-crust  
user avatar asked by Imyaf Score of 8
user avatar answered by Jean-Marie Prival Score of 5

Why are Hadley cells not symmetrical?

Why are Hadley cells not symmetrical? For example, during summer in the northern hemisphere, the Hadley cell in the Northern hemisphere is significantly weaker than the one in the Southern Hemisphere. ...

user avatar asked by user307640 Score of 4
user avatar answered by David Hammen Score of 3

If all land mass was desert would the world be hotter or colder than it is now?

Its normally said that deserts cool planets because they reflect more radiation back to space. According to this logic if all the land mass in the world was desert the world should be colder. Is it ...

climate desert  
user avatar asked by mudpuppy Score of 3
user avatar answered by David Hammen Score of 1

Conservation of mass in Integrated surface water and groundwater models

One of the fundamental principles in fluid mechanics is the conservation of mass - how is this treated in integrated surface water | groundwater models such as MIKE models, say between two river cross-...

hydrology numerical-modelling  
user avatar asked by moinabyssinia Score of 1

Greatest hits from previous weeks:

Can large earthquakes happen twice/thrice at the same place within a short timeframe

I want to know if large earthquakes can happen twice in the same region? The reason is that the recent earthquake in Nepal was followed by many after shocks of considerable magnitude. I wanted to ...

seismology earthquakes  
user avatar asked by Aman Deep Gautam Score of 6

CO₂ level is high enough that it reduces cognitive ability. Isn't that a reason to worry?

I think the level of carbon dioxide in the air is high enough to reduce the intelligence of humans. This has nothing to do with climate change. Except that both mean we should reduce CO₂. I never ...

climate-change greenhouse-gases  
user avatar asked by Volker Siegel Score of 40
user avatar answered by Ken Fabian Score of 40

Why is Earth's outer-core liquid?

The Earth's inner core is solid because despite the enormous temperature in this region, there is also enormous pressure there, which in turn raises the melting point of iron and nickel to a value ...

geophysics core  
user avatar asked by Kenshin Score of 31
user avatar answered by DavePhD Score of 19

Is there a difference between rock and stone?

I couldn't find the definitions from either source: Geology Dictionary Glossary of Geologic Terms

geology rocks petrology terminology  
user avatar asked by Armadillo Score of 23
user avatar answered by Fred Score of 15

If the Bennu asteroid were to hit within a 500 mile radius of Yellowstone National Park, will it trigger a super volcano at Yellowstone?

I am curious to know if it would be highly probable that if the Bennu asteroid were to hit the Earth in 2182, and the point of impact is within a 500 mile radius of Yellowstone National Park, will it ...

geology volcanology earthquakes asteroids  
user avatar asked by user57467 Score of 13
user avatar answered by Ash Score of 17

Is there any experiment to prove that CO2 with the atmosphere concentration can have greenhouse effect?

All gas molecules have the capability to absorb radiation energy. $\rm{CO}_2$ has much less capability to absorb radiation energy, comparing with water vapor. In Earth's atmosphere currently $\rm{CO}...

climate-change carbon water-vapour greenhouse-gases  
user avatar asked by Charlie Jiang Score of 11
user avatar answered by Pont Score of 41

Is there any river that does not discharge into larger body of water?

Do you know any example of a river that does not flow into sea or lake? For example, if water rises from the underground spring and forms a river but water vaporises in hot climate before it reaches ...

hydrology geography rivers hydrogeology  
user avatar asked by Hannelore Schmette Score of 35
user avatar answered by Jean-Marie Prival Score of 46
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