Question

a) High altitude climbers need to have a stay in their base camp before they start the climb.
Give reason.
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Answer 1

Question:

a.) High altitude climbers need to have a stay in their base camp before they start the climb. Give reason. ​

Answer:

The amount of oxygen in air decreases linearly with ascent and very approximately there is about half of sea level oxygen present at 5500m. This falls to roughly one third at the summit of Everest. It is important to appreciate that the partial pressure of oxygen at the summit of Everest is very close to the limits at which human beings can survive at all. Permanent human habitation ceases - due to lack of oxygen, not terrain - above 5400m. Whilst acclimatised man can survive for several weeks or months at 6000m, deterioration is taking place steadily, by the apparent reversal of the very process of acclimatisation that has enabled ascent possible to these altitudes.

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