 |
| Titel |
The land-ice contribution to 21st-century dynamic sea level rise |
| VerfasserIn |
T. Howard, J. Ridley, A. K. Pardaens, R. T. W. L. Hurkmans, A. J. Payne, R. H. Giesen, J. A. Lowe, J. L. Bamber, T. L. Edwards, J. Oerlemans  |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1812-0784
|
| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 10, no. 3 ; Nr. 10, no. 3 (2014-06-19), S.485-500 |
| Datensatznummer |
250117004
|
| Publikation (Nr.) |
 copernicus.org/os-10-485-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
Climate change has the potential to influence global mean sea level through
a number of processes including (but not limited to) thermal expansion of
the oceans and enhanced land ice melt. In addition to their contribution to
global mean sea level change, these two processes (among others) lead to
local departures from the global mean sea level change, through a number of
mechanisms including the effect on spatial variations in the change of water
density and transport, usually termed dynamic sea level changes.
In this study, we focus on the component of dynamic sea level change that
might be given by additional freshwater inflow to the ocean under scenarios
of 21st-century land-based ice melt. We present regional patterns of
dynamic sea level change given by a global-coupled atmosphere–ocean climate
model forced by spatially and temporally varying projected ice-melt fluxes
from three sources: the Antarctic ice sheet, the Greenland Ice Sheet and
small glaciers and ice caps. The largest ice melt flux we consider is
equivalent to almost 0.7 m of global mean sea level rise over the 21st century.
The temporal evolution of the dynamic sea level changes, in the
presence of considerable variations in the ice melt flux, is also analysed.
We find that the dynamic sea level change associated with the ice melt is
small, with the largest changes occurring in the North Atlantic amounting to
3 cm above the global mean rise. Furthermore, the dynamic sea level change
associated with the ice melt is similar regardless of whether the simulated
ice fluxes are applied to a simulation with fixed CO2 or under a
business-as-usual greenhouse gas warming scenario of increasing CO2. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|