DES102 Lecture Notes - Lecture 11: Risk Management
Week 10
Monday, 9 April 2018
1:53 pm
Weather and interpretation and technology
Principle 1
As you rise from sea level and go up the air, both the pressure of the air and its temperature fail.
Principle 2
The pressure of air is not uniform, we have areas of low pressure and areas of high pressure. Air
flows from areas of HP- areas of LP.
Principle 3
Air can hold a certain amount of water as invisible water vapour. This amount can hold in case as air
temperature increases an vice versa
Principle 4
Air of one temperature will not mix easily with air o a different temperature
Principle 5
The sun is the creator and mover of all weather.
Weather map/synoptic charts
• Based upon the measurement of air pressure = hPa
• Linked areas of equal air pressure = Isobars
Low pressure systems
Wind is travelling clockwise, in and up/ isobars closer together
High pressure
Wind is travelling anti clockwise, out and down
http://www.bom.gov.au/lam/students_teachers/pressure.shtml
http://www.bom.gov.au/australia/charts/index.shtml
Cold fronts/troughs
A cold front is the delineation between cold polar air moving towards the equator and undercutting
warm tropical air moving poleward.
Risk management policy
Awareness of the guiding policy of
• Departmnet of education
• University
• Organisational
• Common practise
Established trigger points
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
As you rise from sea level and go up the air, both the pressure of the air and its temperature fail. The pressure of air is not uniform, we have areas of low pressure and areas of high pressure. Air flows from areas of hp- areas of lp. Air can hold a certain amount of water as invisible water vapour. This amount can hold in case as air temperature increases an vice versa. Air of one temperature will not mix easily with air o a different temperature. The sun is the creator and mover of all weather. Weather map/synoptic charts: based upon the measurement of air pressure = hpa. Linked areas of equal air pressure = isobars. Wind is travelling clockwise, in and up/ isobars closer together. Wind is travelling anti clockwise, out and down http://www. bom. gov. au/lam/students_teachers/pressure. shtml http://www. bom. gov. au/australia/charts/index. shtml. A cold front is the delineation between cold polar air moving towards the equator and undercutting warm tropical air moving poleward.
