Foehn wind

[gerardflyagain]

Can anyone explain why the rate of dry warming jumps to 2 degrees per 200m at 2800m?

Isn't the dry adiabatic lapse rate a consistent 1.33c per 200m?

[oggers]

Can anyone explain why the rate of dry warming jumps to 2 degrees per 200m at 2800m? Isn't the dry adiabatic lapse rate a consistent 1.33c per 200m?

The DALR is 2º/200m. 1.33º/200m is the 'standard' lapse rate.

[gerardflyagain]

So why does it increase at a rate of 1º/200m from the top on the right 4400m? Surely this is the DLR as well (since the air is dry) and the DLR should remain consistent?

[oggers]

What he said ^^^^

[foxmoth]

Your last thread had the lapse rates in imperial, studying in both will not help, keep to what the exams are in (I presume they are not in both!).

[Maoraigh1]

Altitude in feet, speed in knots, distance in nautical miles, runway length in metres, temp in Celsius? And C of G calculations?

[foxmoth]

When I said not in both I really meant for any particular subject, yes conversions are actually part of the sylabus, but I would think lapse rates are only tested in one regime!

[gerardflyagain]

Thanks foxmoth. The bit I hadn't realised was that it is still saturated for a while on the leeward side!

I wasn't looking to study in both, but I wanted a video (https://youtu.be/d_287Kf-GKc?t=5m12s) to help understand, and that was the measurement they used.

[foxmoth]

Thanks foxmoth. The bit I hadn't realised was that it is still saturated for a while on the leeward side!
Correct, though of course containing less moisture as it has dropped some as precipitation as it goes over the mountains and is why it is a "warm" wind.