Decomposition of projected regional sea level rise in the North Atlantic and its relation to the AMOC
While it is well understood that thermal expansion dominates global mean steric sea level rise, climate models show large differences in spatial patterns. This study aims to decompose regional steric sea level rise in the North Atlantic into thermal and saline effects in a fully coupled model. In co...
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| Veröffentlicht in: | Geophysical research letters 2009-10, Vol.36 (19), p.np-n/a |
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| creator | Körper, J. Spangehl, T. Cubasch, U. Huebener, H. |
| description | While it is well understood that thermal expansion dominates global mean steric sea level rise, climate models show large differences in spatial patterns. This study aims to decompose regional steric sea level rise in the North Atlantic into thermal and saline effects in a fully coupled model. In contrast to other studies we focus on the differences between two climate change scenarios and establish a link between the sea level changes and the differences in the response of the overturning circulation. While overturning is reduced in the phase of the greenhouse gas increase, differences between the scenarios are not significant until the stabilization in the 22nd century. The influence from thermosteric and halosteric contributions on the meridional density gradient is of the same size during the increase of greenhouse gas concentrations. The haline effect becomes prominent afterwards, reducing the meridional density gradient and preventing the overturning from recovery. |
| doi_str_mv | 10.1029/2009GL039757 |
| format | Article |
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Res. Lett</addtitle><description>While it is well understood that thermal expansion dominates global mean steric sea level rise, climate models show large differences in spatial patterns. This study aims to decompose regional steric sea level rise in the North Atlantic into thermal and saline effects in a fully coupled model. In contrast to other studies we focus on the differences between two climate change scenarios and establish a link between the sea level changes and the differences in the response of the overturning circulation. While overturning is reduced in the phase of the greenhouse gas increase, differences between the scenarios are not significant until the stabilization in the 22nd century. The influence from thermosteric and halosteric contributions on the meridional density gradient is of the same size during the increase of greenhouse gas concentrations. 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| subjects | Air pollution AMOC Climate change Climate models Decomposition Density gradients Earth Earth sciences Earth, ocean, space Exact sciences and technology Greenhouse effect Greenhouse gases Marine Physical oceanography Regional Saline Sea level Sea level changes Sea level rise Thermal expansion |
| title | Decomposition of projected regional sea level rise in the North Atlantic and its relation to the AMOC |
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