Skip to main content
8 votes
Accepted

Why is the snow line higher in the Himalayas than on the equator?

The permanent snow line is controlled by summer insolation, and during the summer the insolation is higher at 30°N than at the equator. See this figure from Fundamentals of Physical Geography (...
Jean-Marie Prival's user avatar
4 votes
Accepted

Doesn't Increase of Potential Temperature with Height contradict Adiabatic Nature of Processes within Troposphere?

You may be forgetting that pressure also decreases with height (exponentially). Also, because $P=\rho R T$, $\frac{dP}{dT}=\rho R$ (that is, $c_p$ does not appear). But I digress in answering your ...
BarocliniCplusplus's user avatar
4 votes

Doesn't Increase of Potential Temperature with Height contradict Adiabatic Nature of Processes within Troposphere?

If we'd be living in a dry atmosphere your reasoning is indeed correct. Air would rise adiabatically and air would loose about 9.8 °C/km (dry adiabatic lapse rate). This means constant potential ...
Joscha Fregin's user avatar
3 votes

Other than the South Pole where is the windless place on Earth?

Truth be told, there is no such place. The atmosphere is a fluid, and a fluid moves. If a fluid did not move, it would not be a fluid. Proof of concept- If you exhale, the carbon dioxide, water vapor,...
BarocliniCplusplus's user avatar
2 votes

Why does cold air inflow in high tropospheric layers create a low in the upper troposphere?

You have asked an excellent question. This source was used for the illustrations shown in this answer. The basis for the exam questions may have been an expectation that the prospective pilot would ...
Thomas Perry's user avatar
2 votes
Accepted

What happens in the upper air when the altitude of the tropopause changes?

Short answer: I think the difference in the 2 soundings can be mostly explained by moving from one air mass (low pressure, relatively humid) to another (high pressure, relatively dry) which also ...
Bollehenk's user avatar
  • 370
2 votes

Pileus / velum & altocumulus / altostratus - classification problems

I’m just now learning about velum clouds, but have been familiar with pileus clouds for a while. It seems to me that the main difference is size if I’m understanding correctly. That doesn’t really ...
Ian's user avatar
  • 21
2 votes
Accepted

With respect to latitude and time of year, what geopotential heights are associated with low pressure systems on the North American landmass?

Great question! First, let's look at typical data: here are the 1981-2010 Reanalysis mean and standard deviation: So looks like the mean 500 height in September for Wisconsin ranges from about 571-...
JeopardyTempest's user avatar
2 votes

Why doesn't one build pressurized camps at Mount Everest?

The Nepali government is extremely sensitive to the notion of climbing their mountains as "sport" and understand that all elements that undermine the sporting nature of climbing, ...
Knob Scratcher's user avatar
1 vote
Accepted

Why is the isothermal layer being considered a part of the stratosphere rather than the troposphere or being an independent layer?

This is simply because of the way that the troposphere is defined and the fact that isothermal layers are of constant temperature. The troposphere has one defining characteristic; the air temperature ...
Ash's user avatar
  • 4,550
1 vote
Accepted

Other than the South Pole where is the windless place on Earth?

Not just the south pole, but 'Ridge A' and many other parts of the high Antarctic Plateau, at or about 4000 metres altitude, are generally recognized as being the least windy. Otherwise, there are a ...
Gordon Stanger's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible