Lecture 10-Climate Change II – a geoscience perspective Flashcards
1
Q
what are epochs
A
event/time that begins a new period
2
Q
what are foraminefera
A
single-celled organisms
3
Q
what is better than the atmosphere for disturbing heat
A
oceans
4
Q
what does AMOC stand for
A
Atlantic Meridional Ocean
Circulation
5
Q
how does Atlantic Meridional Ocean
Circulation work
A
Sea ice at the poles freezes out
freshwater (more isotope
changes) and leave behind dense
cold salty water that sinks
This drags water to poles
6
Q
how do you form polynyas
A
In the southern hemisphere, winds blow off Antarctica pushing sea-ice
offshore
7
Q
what happens after polynyas
A
keep refreezing generating cold salty
water that sinks
