Published August 30, 2024 | Version v1

Plausible Last Interglacial Antarctic ice sheet changes do not fully explain Antarctic ice core water isotope records

  • 1. Antarctica New Zealand
  • 2. Victoria University of Wellington
  • 3. GNS Science Ltd
  • 4. ROR icon University of Cambridge

Description

HadCM3 is used to simulate the response of δ18O to plausible Antarctic surface elevation changes during the Last Interglacial (LIG) period. Here, we perform seven simulations including two preindustrial (PI) simulations and five LIG simulations with three plausible Antarctic Ice Sheet (AIS) scenarios. Each .nc file is one simulation with the specific AIS orography in the PI/LIG, having three variables surface elevation (Orog), δ18O, precipitation, and surface air temperature. All our HadCM3 simulations are integrated for 70 years to ensure that the atmosphere and surface ocean are in a quasi-equilibrium. The last 50 years of each simulation are saved in this dataset. 

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