Antarctic meltwater is projected to slow the abyssal cell

Assembled from 46 blocks · 1 evidence · 80 related

1. Story
2. Li, England, Hogg, Rintoul and Morrison published modelling work in Nature indicating that meltwater from Antarctica, by freshening the shelf water from which Antarctic Bottom Water forms, drives a substantial slowdown and warming of the abyssal overturning circulation. Observational context points the same way: Weddell Sea Bottom Water volume has fallen by around 30 per cent since 1992, with the densest classes lost fastest.
3. Knowledge
4. Antarctic Bottom Water (AABW)
5. Southern Ocean
6. Weddell Sea
7. Antarctic meltwater is projected to slow the abyssal cell
8. Connections
9. Antarctic Bottom Water (AABW)
10. Weddell Sea
11. Southern Ocean
12. Polynya
13. North Atlantic Deep Water (NADW)
14. Weddell Sea
15. Thermohaline Circulation
16. Antarctic meltwater is projected to slow the abyssal cell
17. Antarctic Bottom Water (AABW)
18. Southern Ocean
19. Antarctic meltwater is projected to slow the abyssal cell
20. Antarctic Blue Whale (B. m. intermedia)
21. Antarctic Summer Feeding Migration
22. South Georgia
23. Southern Ocean Whale Sanctuary
24. Seasonal Krill Aggregation
25. The factory ship Lancing takes a stern slipway south
26. The Antarctic blue whale catch reaches its all-time peak
27. The Southern Ocean Whale Sanctuary is adopted
28. Dedicated Antarctic Blue Whale Project voyages
29. Baleen whale consumption is re-measured, and the krill paradox sharpens
30. The only published Antarctic blue whale satellite tracks are released as data
31. Antarctic Krill (Euphausia superba)
32. Arctic Tern (Sterna paradisaea)
33. CCAMLR is agreed at Canberra
34. A long-term decline in krill density is linked to winter sea ice
35. CCAMLR adopts the Ross Sea marine protected area
36. Antarctic sea ice reaches a record low, a year after the previous one
37. Antarctic Circumpolar Current (ACC)
38. Antarctica
39. Thermohaline Circulation
40. North Atlantic — Grand Banks approaches
41. Weddell Sea
42. A circumpolar current becomes possible
43. Antarctic meltwater is projected to slow the abyssal cell
44. A physics-based early warning signal is proposed
45. Evidence
46. Antarctic meltwater freshening shelf waters is projected to drive a substantial slowdown and warming of the abyssal overturning cell fed by Antarctic Bottom Water. Associated observational figures quoted here — an approximately 30 per cent decline in Weddell Sea Bottom Water volume since 1992 and a greater than 40 per cent decline in shelf sea-ice formation rate — come from adjacent studies summarised alongside it, not from this paper.