ENV 1101 Lecture : Class 10 - Air Pollution & Global Climate Change.docx
Document Summary
Is the highest elevation on earth (8. 85km above sea level) Name in tibetan is chomolungma, in nepalese sagarmantha. Wind blows at about 250km/h for much of the year die to the jet stream. There is only 1/3 the concentration of oxygen per unit air at sea level. The temperature is virtually always well below freezing, can go to -75c. First successful climb to summit and return: 1953, hillary and norgay. First clime without oxygen: 1978, habeler and messner. Most summits: 10, ang rita sherpa (all without oxygen) Where we live (and everything else on earth) Temperature gets colder the higher you go (dry air cools at ~loc/100m; moist air at a typically lower rate. Means that airborne pollution can make its way up to the tropopause fairly quickly. Air is thin, does not move around much. Contains ozone (o3) which absorbs some radiation, causing the stratosphere to warm. Higher up are the mesosphere, thermosphere and transition to outer space.