Table 1 Summary of changes in oceanic/climatic conditions on the North Icelandic Shelf and key climate forcing factors for the Atlantic region since 1850.
From: An oceanic perspective on Greenland’s recent freshwater discharge since 1850
Proxy | 1850 to 1900 | 1900s to 1940s/50s | 1940s/50s to present | |||
|---|---|---|---|---|---|---|
1940s/50s to 1980s | 1980s to 2000 | since 2000 | ||||
regional North Icelandic conditions | Drift/ Sea Ice occurrence | high | low | increasing | decreasing | absent |
Polar Front | weak | strong | weak | weak | weak | |
Summer to Winter Air Temp. gradient | high | decreasing | increasing | decreasing | decreasing | |
GrIS freshwater supply | low | low | increasing | increased | increasing | |
Forcing factors | NAO Index | negative phase | positive phase | negative phase | positive phase | neagtive phase |
AMO Index | positive phase | negative phase | positive phase | negative phase | positive phase | |
SPG-AMOC | strong | strong | weakening | weak | strong | |
Volcanic activity | weak | weak | increased | increased | weak | |
Solar Irradiance | weak | increasing | increasing | high | decreasing | |
