On the origin of the cooling in the sub-polar North Atlantic ...
<!--!introduction!--> Sea surface temperature increase resulting from greenhouse gas emissions is not fully understood. In high latitudes, extreme warming has been responsible for melting glaciers and sea ice, augmenting freshwater inputs in the sub-polar North Atlantic. In particular, this re...
| Main Author: | |
|---|---|
| Format: | Conference Object |
| Language: | unknown |
| Published: |
GFZ German Research Centre for Geosciences
2023
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.57757/iugg23-3752 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020792 |
| Summary: | <!--!introduction!--> Sea surface temperature increase resulting from greenhouse gas emissions is not fully understood. In high latitudes, extreme warming has been responsible for melting glaciers and sea ice, augmenting freshwater inputs in the sub-polar North Atlantic. In particular, this region has shown persistent cooling, contrasting sharply with overall global warming trends. In many studies, this sea surface cooling has been associated with a weakening of the Atlantic Meridional Overturning Circulation (AMOC) partially induced by the increasing freshwater input from Greenland resulting from global warming. To investigate this relationship, we employed non-linear techniques which reveal a long-term inverse relationship between increasing freshwater input and cooling, whereby freshwater transport reduces sea surface salinity, increases surface water stability, and impedes vertical mixing. Therefore, surface waters require further cooling to reach the density where vertical mixing can occur, ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
|---|