We quantify sea - level commitment in the baseline case by building
on Levermann et al. (10), who used physical simulations to model the SLR within a 2,000 - y envelope as the sum of the contributions of (i) ocean thermal
expansion, based
on six coupled climate models; (ii) mountain glacier and ice cap melting, based
on surface mass balance and simplified ice dynamic models; (iii) Greenland ice sheet decay, based
on a coupled regional climate model and ice sheet dynamic model; and (iv) Antarctic ice sheet decay, based
on a
continental -
scale model parameterizing grounding line ice flux in relation to temperature.