Cristin-prosjekt-ID: 489193
Sist endret: 8. desember 2017 15:10
Cristin-prosjekt-ID: 489193
Sist endret: 8. desember 2017 15:10
Prosjekt

Quantifying ice sheet response to variations in initial Bedrock topography (IceBed)

prosjektleder

Petra Langebroek
ved Uni Research Klima ved NORCE Norwegian Research Centre AS

prosjekteier / koordinerende forskningsansvarlig enhet

  • Uni Research Klima ved NORCE Norwegian Research Centre AS

Finansiering

  • TotalbudsjettNOK 3.070.000
  • Norges forskningsråd

    • Prosjektkode: 221598

Klassifisering

Vitenskapsdisipliner

Matematikk og naturvitenskap • Geofag

Kategorier

Prosjektkategori

  • Grunnforskning

Kontaktinformasjon

Telefon
93002873
Sted
Erik Sandquist

Tidsramme

Avsluttet
Start: 1. oktober 2013 Slutt: 30. juni 2017

Beskrivelse Beskrivelse

Tittel

Quantifying ice sheet response to variations in initial Bedrock topography (IceBed)

Populærvitenskapelig sammendrag

The majority of the world's population lives along the coastline. In the present-day world of melting ice sheets and consequent global sea level rise, ice sheet research is therefore extremely relevant. The effect of the bedrock topography on which the ice sheets grow on the resulting ice volume and stability is still largely unknown. IceBed aims at quantifying this effect under various climate conditions. As a start the climate during a previous warm period is simulated and discussed in an article published in the open access journal Climate of the Past (Langebroek and Nisancioglu, 2014). These simulated warm climates provide scenarios for testing the climate module that forces the ice sheet model (under development). A special focus of IceBed is on the much-debated early onset of Northern Hemisphere glaciation under high CO2 levels of the Eocene/Oligocene, approximately 34 million years ago. During a three-months research stay a solid collaboration with ice sheet and climate scientists at the University of Bristol (United Kingdom) is established. Through this collaboration bedrock topography maps and simulated climate conditions for the Eocene/Oligocene were acquired providing an exciting baseline to assess the possibility of early Northern Hemisphere glaciations. Related to this work a publication reviewing the evolution of the Greenland ice sheet during the Cenozoic was published in Earth Science Reviews (Vasskog et al., 2015). Public outreach for IceBed comprises of two popular science articles in printed and online versions (one in the Norwegian climate magazine '2grader' and one in Bergens Tidende) and information on our contribution to the Norwegian Science Days on several websites.

Vitenskapelig sammendrag

IceBed aims at quantifying the effect of initial bedrock topography on ice sheet volume, extent and stability, and related sea level variations (objective 1). The project also intends to improve our understanding of atmospheric CO2-ice sheet interactions by assessing CO2 thresholds required for glacial inception on various bedrock topographies (objective 2). This knowledge will be applied to the much-debated early onset of Northern Hemisphere glaciation under high Eocene/Oligocene CO2 levels. IceBed will analyse the probability of such an early onset by elevating the initial bedrock topography (objective 3). These objectives will be achieved by using the three-dimensional ice sheet model SICOPOLIS, for which a climate-forcing module converting CO2 and insolation to surface energy and mass balances will be developed. A set of hypothetical, but realistic initial bedrock topographies will be designed and used as model boundary condition. The elevated initial bedrock topography required for the Northern Hemisphere glaciation simulations will be derived from geodynamic model results. IceBed combines the disciplines of ice sheet and climate modelling with geology and geodynamics. It will advance these fields and additionally produces information essential for future global sea level projections and hydrocarbon exploration offshore Norway. IceBed also gives the applicant the opportunity to engage in popular dissemination activities, increase her publication record and enlarge her scientific and industrial network, thereby promoting the gender balance in these male dominated research fields. The transfer of scientific knowledge and skills, expansion of international cooperation (with the University of Bristol, United Kingdom) and development of new interdisciplinary methods associated with this project is highly beneficial for the ongoing excellence of Norwegian research.

prosjektdeltakere

prosjektleder

Petra Langebroek

  • Tilknyttet:
    Prosjektleder
    ved Uni Research Klima ved NORCE Norwegian Research Centre AS

Kerim Hestnes Nisancioglu

  • Tilknyttet:
    Prosjektdeltaker
    ved Senter for Jordens utvikling og dynamikk ved Universitetet i Oslo
  • Tilknyttet:
    Prosjektdeltaker
    ved Institutt for geovitenskap ved Universitetet i Bergen

Eystein Jansen

  • Tilknyttet:
    Prosjektdeltaker
    ved Uni Research Klima ved NORCE Norwegian Research Centre AS

Ritske Huismans

  • Tilknyttet:
    Prosjektdeltaker
    ved Institutt for geovitenskap ved Universitetet i Bergen
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Resultater Resultater

The DeepMIP contribution to PMIP4: experimental design for model simulations of the EECO, PETM, and pre-PETM (version 1.0).

Lunt, Daniel J.; Langebroek, Petra; Huber, Matthew; Anagnostou, Eleni; Baatsen, Michiel L.J.; Caballero, Rodrigo; DeConto, Rob; Dijkstra, Henk A.; Donnadieu, Yannick; Evans, David mfl.. 2017, Geoscientific Model Development. UoNaN, LDEO, UoCR, NCAR, TXSTATE, PU, UoA, UoB, UoE, SYDNEY, GNS, AWI, NOCS, YU, NMNH, UU, UoSA, SU, NORCE, NASA, UoMA, STORBRITAN, CARDIFF, UoCaB, TAUS, UoCLA(, UoMaA, CNRS, TUOB, UCSC, UoHaM, UoTaA, UCLVitenskapelig artikkel

How warm was Greenland during the last interglacial period?

Landais, Amaelle; Masson-Delmotte, Valérie; Capron, Emilie; Langebroek, Petra; Bakker, Pepijn; Stone, Emma J.; Merz, Niklaus; Raible, Christoph C.; Fischer, Hubertus; Orsi, Anaïs mfl.. 2016, Climate of the Past. OSU, NORCE, BAS, UoB, KU, LSCE, UBVitenskapelig artikkel

Moderate Greenland ice sheet melt during the last interglacial constrained by present-day observations and paleo ice core reconstructions.

Langebroek, Petra; Nisancioglu, Kerim Hestnes. 2016, The Cryosphere Discussions. NORCE, UIBVitenskapelig artikkel

Havets hemmeligheter.

Darelius, Elin Maria K.; Langebroek, Petra. 2015, Bergens Tidende. NORCE, UIBPopulærvitenskapelig artikkel

The Greenland Ice Sheet during the last glacial cycle: Current ice loss and contribution to sea-level rise from a palaeoclimatic perspective.

Vasskog, Kristian; Langebroek, Petra; Andrews, John T.; Nilsen, Jan Even Øie; Nesje, Atle. 2015, Earth-Science Reviews. NERSC, NORCE, UoCaB, UIBVitenskapelig oversiktsartikkel/review
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