Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
| one publication added to basket [257131] |
Century-scale simulations of the response of the West Antarctic Ice Sheet to a warming climate
Cornford, S.; Martin, D.; Payne, A.; Ng, E.; Le Brocq, A.; Gladstone, R.; Edwards, T.; Shannon, S.; Agosta, C.; van den Broeke, M.; Hellmer, H.; Krinner, G.; Ligtenberg, S.; Timmermann, R.; Vaughan, D. (2015). Century-scale simulations of the response of the West Antarctic Ice Sheet to a warming climate. Cryosphere 9(4): 1579-1600. dx.doi.org/10.5194/tc-9-1579-2015
In: The Cryosphere. Copernicus: Göttingen. ISSN 1994-0416; e-ISSN 1994-0424, meer
|   |
| Auteurs | | Top |
- Cornford, S.
- Martin, D.
- Payne, A.
- Ng, E.
- Le Brocq, A.
|
- Gladstone, R.
- Edwards, T.
- Shannon, S.
- Agosta, C., meer
- van den Broeke, M.
|
- Hellmer, H.
- Krinner, G.
- Ligtenberg, S.
- Timmermann, R.
- Vaughan, D.
|
| Abstract |
We use the BISICLES adaptive mesh ice sheet model to carry out one, two, and three century simulations of the fast-flowing ice streams of the West Antarctic Ice Sheet, deploying sub-kilometer resolution around the grounding line since coarser resolution results in substantial underestimation of the response. Each of the simulations begins with a geometry and velocity close to present-day observations, and evolves according to variation in meteoric ice accumulation rates and oceanic ice shelf melt rates. Future changes in accumulation and melt rates range from no change, through anomalies computed by atmosphere and ocean models driven by the El and A1B emissions scenarios, to spatially uniform melt rate anomalies that remove most of the ice shelves over a few centuries. We find that variation in the resulting ice dynamics is dominated by the choice of initial conditions and ice shelf melt rate and mesh resolution, although ice accumulation affects the net change in volume above flotation to a similar degree. Given sufficient melt rates, we compute grounding line retreat over hundreds of kilometers in every major ice stream, but the ocean models do not predict such melt rates outside of the Amundsen Sea Embayment until after 2100. Within the Amundsen Sea Embayment the largest single source of variability is the onset of sustained retreat in Thwaites Glacier, which can triple the rate of eustatic sea level rise. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
