Antarctica Flashcards
(51 cards)
Which pole
South
Average temperature
-40*C
How much rain yearly
Under 50 mm
What are kabatic winds
Very strong 70 mph winds lasting up to 40 days
How much constant sunlight
6 months
What is biodiversity like
Very low due to harsh conditions
Which ocean is the more diverse
The southern ocean
What are the natural resources found in Antarctica
Marine life, fossil sails and minerals, large oil reserves in the southern ocean
Why is it valuable as a global common
Because it has a very high volume of natural resources
Climate change in Antarctica
It is very vulnerable to cc due to its extreme climate. This makes global emissions a shared responsibility as small temp changes can have a long lasting impact.
A warmer sea and atmosphere leads to
Melting ice -> sea level rise -> global flooding
Why are animals and plants affected by cc
Because they are highly adapted to their environment, and can lead to encroaching invasive species.
What can changing migration patterns lead to
Happens due to temp changes -> species in some areas decline -> can alter food chain
What can melting sea ice also mean
Previously stored co2 in the cryospheric store is released -> enhancing the greenhouse affect
Reduced ice impact on albedo
Less reflection of solar radiation -> more radiation absorbed -> increasing temperature-> melting more ice
Overfishing knock ons
Disrupts food chain -> damages marine habitats
How much krill is fished annually
200,000 tonnes
What does IUU mean
Illegal unreported unregulated
Despite regulations there is still
IUU fishing happening
What are whale populations like
Low at endangered levels
When can whaling be dated back to
18th century
When was all mining in Antarctica banned
1991
Why is there a looming fossil fuel crisis
Demand exceeding supply, may mean mining bans in Antarctica aren’t certain for the future
How many tourists visited in 2009-2010
37,000