climate change Flashcards
what is climate change?
unequivocal
what period do we take information from?
[last 2.6 million years]
quaternary period
how much have tmeps raised since 1800
0.85 degrees
evidencde for climate change:
- tree rings [ grow thicker in warm, wet conditions]
- shrinking glaciers
[artic glacier - 65% smaller] - ice cores [proxies]
snow falls and preserved gasses inside it - temperature records = increasing
climate change NATURAL causes:
-** volcanic activity**
[volcanic material/ash can block the sun = temps drop]
[can reflect radiation]
**- solar acitvity **
[spot cycle, dark patches of intense radiaion/energy = INCREASE TEMPS]
- orbital change
- how much solar radiation/energy hits the earth
-
climate change human activities:
- burning fossil fuels
- farming
- de forestation
- cement production
climate change effects on the enviroment:
- increased draught
- wild fires
- glaciers shrink & ice sheets melt = sea level rise
- coral reefs bleaching & decrease in biodiversity e.g Great barrier reef
- increased flooding & coastal ereosion e.g Holderness
climate change affect on people:
- deaths due to heat
- smaller crop yeild = less income and food
- drought reduces food and water supplies e,g Africa
- increased chance of skin cancers/stoke
ways to reduce the cuases - mitigration:
- planting trees
- carbon capture
[store it underground instead] - alternative energy production
[renewable] - international agreements
[EU & UK agreed to reduce CO2 emmisons by 40% by 2030 ]
primary effects of the beast form the east UK:
- 10 deaths
- snow drifts up to 7m high
secondary affects of the beast form the east:
- thousands of schools closed
- british airways canceeled hundresds of flights
- farmers lost crops
- ppl stuck in traffic for hours e.g A31 & around8,000 crashes
responsed for the beast form the east:
- dirvers given foil blankets = for cold
- met office issued red warnings
- 10 RAF 4x4 verchile transpoted health staff
- greggs delivery van giving out free food on the A1
