WATER -ENSO
- Created by: aliceoliviaaa
- Created on: 18-05-18 14:44
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- ENSO (El Nino, La Nina)
- El Nino
- Trade winds may slacken or reverse from WEST to EAST.
- PERU has a sea level rise of 30cm and 6-8* sea temperature rise.
- water in AUSTRALIA and INDONESIA is cooler
- AUSTRALIA experiences droughts
- La Nina
- really strong trade winds blowing EAST to WEST.
- Cold upwelling of water in PERU.
- Heavy rain in SOUTH EAST ASIA
- Sea level is 1m higher in PHILIPPINESand INDONESIA
- Drought in PERU and CHILE.
- Normal Year
- Trade winds blow EAST to WEST along the equator
- Cold upwelling of water in PERU.
- Trade winds pressure increases sea levels in AUSTRALIA by 50cm.
- Sea is 8*C warmer in Australasia
- CONCERNS
- global water supplies are affected by ENSO cycles.
- DIMINISHING WATER SUPPLY, INCREASED UNCERTAINTY.
- greater evaporation from surface waters and reservoirs in summer (& spring).
- greater rates of evapo-transpiration leads to desiccation of forest stores
- unreliable patterns of rainfall (unpredictable monsoons).
- more frequent cyclone events threaten water supplies intermittently
- increased intensity and frequency of droughts - affects agriculturalists
- depleted aquifers affects groundwater
- decreased rainfall
- loss of snow and glaciers as a store threatens mountainous communities
- El Nino
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