Are V-shaped valleys hotter than U-shaped valleys? (climate, warm, temperatures)

[Glacierx]

Do you think that the shape of a valley affects the temperature? In addition to the general shape, does the steepness and height of the valley walls affect the temperature?

At first I was thinking that V-shaped valleys are warmer at night because of this map, but then I realzied that my valley is U-shaped, and we get very cold at night relative to some other valleys around here.

No I'm left thinking that valley shape has almost nothing to do with temperature. What do you think?

[P London]

Valleys do effect temperature.

Valleys have extreme temperature differences, during a clear winter night temperatures will drop lower than the surrounding area due to the lack of mixing of the air (being shelted by higher ground on all sides) and by valleys that border mountains a type of wind can blow from the higher ground into the valley by the force of gravity - cold air is denser than warm air.

So in a valley temperatures can get quite low people may describe them as "frost hollows"

But also during the summer due to a valleys sheltered nature the suns radiation can heat up the valley to a higher temperature than other areas but also temperatures at night will drop lower than the surronding area.

The deeper the valley the extreme the temperature.

[Rozenn]

Yes, V-shaped valleys tend to be warmer at night than U-shaped ones. The former have a smaller sky view factor so they feature less intense radiational cooling.

[nei]

Here's the climate of a classic U-shaped valley:

YOSEMITE PARK HDQTRS, CALIFORNIA - Climate Summary

would need a similarly located V-shaped valley to compare.