OCR A Level Geography Earth's Life Support System Summary - 3b (The pathways and processes which control the cycling of water and carbon vary over time)

1.2. How much change occurs over time in the water and carbon cyc
 3b. The pathways and processes which control the cycling of water and carbon vary


Short term changes: Long ter
Diurnal How do
cycle?
 Minimal impact as several months of the yr the sun has either set or risen permanently – seasonal
variations are more appropriate Net tran
 Significant changes occur within a 24 hr period of the water cycle reservo
 Lower temps at night – can create perfect conditions for condensation & the formation of fog, mist & glaciers
frost  In gl
 IMPACT: falls
- Reduces evapotranspiration sheet
- Convectional precipitation, dependent on direct heating of the ground surface by the sun, is a aroun
daytime phenomenon often falling in the afternoon when temps reach a max mass
- This is particularly significant in climatic regions in the tropics where the bulk of the precipitation is  As ic
from convectional storms they
fores
Seasonal changes  The
wate
 Ultimately the seasons are controlled by variations in the intensity of solar radiation. In the UK, solar  Mean
radiation intensity peaks in mid-June beco
 A typical solar input in June in southern England is approx 800 W/m^2 grass
 IMPACT: rainfo