PPRuNe Forums - View Single Post - ATPL Met Exam Question - can anyone help?
Old 27th Mar 2001, 01:42
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Tinstaafl
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1. Wind flow is clockwise around a low in the S. hemisphere.

Flying away from the L means the wind must be from the left for it to also be flowing clockwise around the low.

The question also states that you're at a low altitude. These sorts of 'extras' in the stem of qestions are there for a reason ie bring to your attention some factor that changes as a result of the specified condition and must be considered to derive the correct answer.

Wind flow at Low altitude vs high altitude changes as a result of surface friction preventing flow being truly parallel to the isobars.

The pressure system mentioned is a Low so air will tend flow into the Low, in addition to clockwise around this S. hemisphere Low.

You're flying away from the low at low altitude (therefore friction effects), the wind has a tendency to flow into the low so there will also be a slight headwind component.

2. Highest turbulence is on the Polar side of the jetstream.

The polar jet blows from W to E (in both hemispheres)& you're facing downwind in the S. hemisphere ie facing East. The S. pole is on your right & therefore so is the polar side of the jet & its highest turbulence.



[This message has been edited by Tinstaafl (edited 26 March 2001).]