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Update SST restoring experiments authored by David Docquier's avatar David Docquier
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...@@ -48,7 +48,8 @@ increase is much lower compared to BSO and Fram; and the changes in OHT at Davis ...@@ -48,7 +48,8 @@ increase is much lower compared to BSO and Fram; and the changes in OHT at Davis
- Fig. 7: the spatial extent of the SST increase follows the domain used for the SST restoring, with a larger spatial extent in the SST increase with the larger domain; - Fig. 7: the spatial extent of the SST increase follows the domain used for the SST restoring, with a larger spatial extent in the SST increase with the larger domain;
- Fig. 8: the mixed layer depth in the Labrador, northern North Atlantic and Greenland-Iceland-Norway (GIN) Seas decreases with higher SST for the 2 larger domains (North Atlantic and northern North Atlantic); this probably explains the OHT decrease south of 60N, following a weakening of the overturning circulation; - Fig. 8: the mixed layer depth in the Labrador, northern North Atlantic and Greenland-Iceland-Norway (GIN) Seas decreases with higher SST for the 2 larger domains (North Atlantic and northern North Atlantic); this probably explains the OHT decrease south of 60N, following a weakening of the overturning circulation;
- Fig. 9: the mean March sea-ice concentration clearly decreases in the Barents and GIN Seas in the North Atlantic and northern North Atlantic experiments (top and middle rows) and this decrease is much less pronounced in the case of the BSO experiment (bottom row); furthermore, increasing the SST in the North Atlantic experiment (top row, from left to right) clearly decreases the sea-ice concentration beyond the Barents Sea (through the Kara Sea) and also in the Bering Strait, interestingly. - Fig. 9: the mean March sea-ice concentration clearly decreases in the Barents and GIN Seas in the North Atlantic and northern North Atlantic experiments (top and middle rows) and this decrease is much less pronounced in the case of the BSO experiment (bottom row); furthermore, increasing the SST in the North Atlantic experiment (top row, from left to right) clearly decreases the sea-ice concentration beyond the Barents Sea (through the Kara Sea) and also in the Bering Strait, interestingly.
- Fig. 10: the mean March sea-ice thickness decreases everywhere in the Arctic in all experiments, especially in the North Atlantic experiments (top row); as for sea-ice concentration, increasing the SST in the North Atlantic experiment (top row, from left to right) clearly decreases the sea-ice thickness, but this sea-ice thinning clearly spans the whole Arctic. - Fig. 10: the mean March sea-ice thickness decreases everywhere in the Arctic in all experiments, especially in the North Atlantic experiments (top row); as for sea-ice concentration, increasing the SST in the North Atlantic experiment (top row, from left to right) clearly decreases the sea-ice thickness, but this sea-ice thinning clearly spans the whole Arctic;
- Fig. 11: the Atlantic meridional stream function (AMSF) strongly decreases in the North Atlantic experiments (top row), decreases in the northern North Atlantic experiments (middle row) and does not substantially change in the BSO experiments (bottom row); in the North Atlantic and northern North Atlantic experiments, the higher the SST increase, the stronger the decrease in AMSF.
![OHT_50yrs_SST](uploads/0e0f5ac54f9496657c6f3dec54f5a5a5/OHT_50yrs_SST.png) ![OHT_50yrs_SST](uploads/0e0f5ac54f9496657c6f3dec54f5a5a5/OHT_50yrs_SST.png)
**Fig. 1: Latitudinal transect of mean Atlantic OHT averaged over 50 years (except 2000-2014 for the CMIP6 r1 member to compare to TF2017); OHT estimates from Trenberth and Fasullo (TF2017) are plotted for reference; the number in brackets is the difference in mean OHT between the experiment and the control (CTRL)** **Fig. 1: Latitudinal transect of mean Atlantic OHT averaged over 50 years (except 2000-2014 for the CMIP6 r1 member to compare to TF2017); OHT estimates from Trenberth and Fasullo (TF2017) are plotted for reference; the number in brackets is the difference in mean OHT between the experiment and the control (CTRL)**
...@@ -80,4 +81,7 @@ increase is much lower compared to BSO and Fram; and the changes in OHT at Davis ...@@ -80,4 +81,7 @@ increase is much lower compared to BSO and Fram; and the changes in OHT at Davis
![Maps_March_sivol_diff](uploads/b1fc0163a140e03aa0254315d41644c9/Maps_March_sivol_diff.png) ![Maps_March_sivol_diff](uploads/b1fc0163a140e03aa0254315d41644c9/Maps_March_sivol_diff.png)
**Fig. 10: Maps of difference in mean March sea-ice thickness between the different sensitivity experiments and the control run, averaged over 50 years** **Fig. 10: Maps of difference in mean March sea-ice thickness between the different sensitivity experiments and the control run, averaged over 50 years**
![zomsfatl_50yrs_diff_SST](uploads/fc132e86f6e9828243983644f1d048cc/zomsfatl_50yrs_diff_SST.png)
**Fig. 11: Vertical profiles of difference in mean Atlantic meridional stream function (AMSF) between the different sensitivity experiments and the control run, averaged for each latitudinal band and over 50 years**
Important note: These figures were produced by D. Docquier and constitute preliminary results (not published in papers). Important note: These figures were produced by D. Docquier and constitute preliminary results (not published in papers).
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