User123
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Why are mornings cooler than nights?
Accepted answer
30 votes

The Earth is always radiating heat to the space. But in the day the Sun delivers some heat. The net heat flux is then defined as the sum of those two factors. If the energy delivered by the Sun is ...

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Why does relative humidity drop if I open the window in winter? What about the temperature drop?
4 votes

Let's do this with accurate equations. We know how to calculate the saturated water vapour pressure for temperature $T$: $$e_s(T)=e_{s0}e^{\frac{h_i}{R_w}(\frac{1}{T_{s0}}-\frac{1}{T})}=610\text{ Pa} \...

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How much nitrogen would you need to replace all oxygen in a room of 1,000 cubic feet?
Accepted answer
3 votes

Your assumption about constant pressure can't actually exist while everything is closed. I am not using this assumption here because it is more correct and a bit easier: $$\pu{10 feet} = \pu{3.048 m}$$...

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How strong/hard are speleothems?
2 votes

The speleothems are made of calcite, so breaking one small stalactite is same as breaking one narrow "straw" of calcite. Calcite is not so strong, so it is pretty easy to break small ...

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Why are the south, the west and the north of the Caspian sea lush but its east completely dry?
2 votes

The mountains. The south has a steep relief, as well as the west. That means that there is much precipitation. The clouds throw every drop on these mountains, so almost nothing is left. The east is ...

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How to calculate rate of change of temperature with pressure in Earth's troposhere?
1 votes

Wow, @John came with a simple answer. Our goal is to find $$\frac{dT}{dP}=\frac{dT}{dz}\cdot\frac{dz}{dP}$$ By the equation for pressure lapse: $$P=P_0\cdot e^{-\frac{z}{H}}$$ where $H=8 km=8000 m$ (...

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Why divide total insolation by $4$?
1 votes

Climate science studies the processes on the Earth over the course of many centuries. The rotation of the Earth is so small compared to many centuries. Imagine that we roast the chicken. We can ...

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map projections that minimises differences
1 votes

I am sorry, but this type of linear map can't exist. You said that you want to minimize differences, so you want to make small countries bigger. But unfortunately, big countries become bigger too (...

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How to properly distinguish a transversal valley from a longitudinal valley?
1 votes

I think that the simplest way is to just look at the map for these two valleys in the Switzerland: Longitudinal valley: You can see that this is perfect example on the map: we can easily see the ...

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Can we see the circulation cells in wind maps?
1 votes

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 ...

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Is it possible to detect Coriolis effect using a Wind Rose?
0 votes

Yes, your figure is correct: in the mid-latitudes we have cyclones and anticyclones. They can't exist on equator because the Coriolis force there is too small to keep them stable. But the cyclones or ...

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Is it natural for clouds to flow near the surface?
0 votes

I believe it had been raining before. The water had gone to the soil, but the moment you took that picture, it was already evaporating. The air was filling with such water coming from the soil, but ...

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