All Questions
Tagged withantarctic
oceanography
5 questions
5
votes
1
answer
2k
views
Why don't Antarctic waters have more upwellings, when Arctic waters are so rich in upwellings?
Formation of ice and hence more dense saltwater sinking happens in both polar regions, creating downwellings. Meanwhile, only a few spots in Antarctica have upwellings I refer to this image: https://...
- 163
6
votes
0
answers
83
views
Relationship between obliquity, antarctic circumpolar current, and atmospheric $\ce{CO2}$
Hannah's text on the biology of climate change appears to suggest that forcing due to changes in obliquity can act in opposite ways in Antarctic waters. On one hand, "Low obliquity brings cool ...
- 61
12
votes
2
answers
741
views
Will the Southern Ocean act as a net source or sink for atmospheric $\ce{CO2}$ in the future?
Some estimates claim that currently about one third of current human annual emissions of $\ce{CO2}$ are absorbed by the oceans. Some authors have calculated that about half of the global ocean total ...
- 15.3k
9
votes
1
answer
125
views
How much has the total transport of the Antarctic Circumpolar Current changed over time?
The Antarctic Circumpolar Current (ACC), the oceanic current that flows around the Antarctic continent, has many links to weather and climate processes (e.g., Is there conclusive evidence for the ...
- 15.3k
18
votes
1
answer
160
views
Paleogene transantarctic seaway
Lawver & Gahagan (1998; 2003) hypothesized, based on sea level records and the isostatically adjusted bedrock surface of Antarctica, the existence of a Trans-Antarctic Seaway linking the Ross Sea ...
- 5,318