Changes to Flows and Stores in the Water Cycle - ELSS
- Created by: zoemort
- Created on: 28-09-19 22:29
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- Changes to Flows and Stores in the Water Cycle
- Diurnal changes
- Evaporation
- Greater during the day
- As temperatures are warmer
- Less during the night
- Greater during the day
- Transpiration
- Less during the night
- Due to cooler temperatures
- Increased in the daytime
- Less during the night
- Convectional rainfall
- Heated during the day causing air to rise
- As air rises it cools and condenses, causing rainfall
- Rainfall occurs mid afternoon - approx 2pm
- As air rises it cools and condenses, causing rainfall
- Heated during the day causing air to rise
- Evaporation
- Seasonal changes
- Driven by temperature
- Evaporation and transpiration
- Greater in summer
- Due to warmer temperatures
- Greater in summer
- Long term changes
- Quaternary ice age
- Flandrian transgression
- 12,000 years ago - present
- devensian glacial
- 115,000 years to 12,000 years ago
- average temperaure was 5oC lower
- Ice was 1km thick
- eustatic change - worldwide rise in sea levels due to melting of glaciers and ice sheets
- Flandrian transgression
- Ice age
- Interglacial
- Increased water store in the sea
- Glacial
- lack of vegetation
- Evapotranspiration, interception & runoff decreases
- Photosynthesis is reduced significantly
- Short growing season
- Reduced NPP as 6oC+ is needed for growth
- Photosynthesis is reduced significantly
- less precipitation
- no evaporation
- Flow rates reduce dramatically
- Biggest store of water is on land as ice / permafrost
- lack of vegetation
- Interglacial
- Quaternary ice age
- Diurnal changes
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