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Enhanced large-scale atmospheric flow interaction with ice sheets at high model resolution
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-6570-5499
2019 (English)In: Results in Engineering, ISSN 2590-1230, Vol. 3, article id 100030Article in journal (Refereed) Published
Abstract [en]

The development in supercomputing power allows running full-complexity Earth System Models (ESM) at increasingly higher spatial resolutions on a global scale. We show here a recent example where increased model resolution leads to a fundamentally different large-scale fluid dynamical adjustment of the mean wind pattern to the presence of an ice sheet over Europe compared to a coarse resolution simulation. While the higher resolution allows for a more realistic representation of atmospheric flow interaction with complex topographic features, the interpretation and prediction of the model results with a stronger bottom-up mechanical and thermal forcing on the atmosphere becomes increasingly difficult to be studied within a fully coupled model. We emphasize that interdisciplinary approaches should be pursued where the experience from engineering approaches of studying flow around objects and the influence of boundary-layer processes can help to disentangle the complexity within ESM. Ultimately, such engineering approaches will add a more fundamental theoretical understanding and prediction of expected flow interactions and will help to design full-complexity atmospheric model experiments accordingly.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 3, article id 100030
Keywords [en]
Atmospheric boundary layer, Geophysical flow, Ice sheets, Numerical simulations
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-262506DOI: 10.1016/j.rineng.2019.100030Scopus ID: 2-s2.0-85071886034OAI: oai:DiVA.org:kth-262506DiVA, id: diva2:1366206
Note

QC 20191028

Available from: 2019-10-28 Created: 2019-10-28 Last updated: 2019-10-28Bibliographically approved

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Vinuesa, Ricardo

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