Picture of David Pollard

David Pollard

Research Professor Emeritus
Earth and Environmental Systems Institute
College of Earth and Mineral Sciences
Pennsylvania State University

Current Research Projects:

  • Pliocene sea level amplitudes (PLIOAMP) (lead Robert DeConto, U. Massachusetts; Edward Gasson, U. Exeter, UK)
  • Thresholds and envelopes of rapid ice-sheet retreat (lead Robert DeConto, U. Massachusetts, et al.)
  • Investigating ice sheet-solid Earth feedbacks in West Antarctica (lead Terry Wilson, Ohio State U., et al.)

Past Research Projects:

  • Future global and local sea-level estimates (lead Isabella Velicogna, U. California Irvine, et al.)
  • Evaluating retreat in the Amundsen Sea Embayment (with Byron Parizek et al., PSU)
  • Global climate response to melting of the Antarctic Ice Sheet (with Alan Condron, WHOI, et al.)
  • Antarctic ice sheet and sea-level variations since the Pliocene, using coupled climate-ice sheet-Earth sea level models (with the PLIOMAX project, lead Maureen Raymo, Lamont-Doherty Earth Observatory/Columbia U., et al.)
  • Large-ensemble statistical assessment of West Antarctic vulnerability (with Sustainable Climate Risk Management [SCRiM] project, lead Klaus Keller, PSU; and with Murali Haran et al., PSU)
  • Bipolar coupling of late Quaternary ice sheet variations (with Axel Timmermann et al., U. Hawaii)
  • Representing calving and iceberg dynamics in global climate models (with Olga Sergienko, GFDL-Princeton, et al.)
  • CO2 sensitivity and ice sheet hysteresis across the Oligocene-Miocene boundary (with Robert DeConto, U. Massachusetts)
  • Development of nested ice-sheet model capability, and application to sectors of Antarctica and Greenland (with CReSIS Science and Technology Center, lead U. Kansas)
  • West Antarctic ice sheet retreat since the Last Glacial Maximum (with Peter Clark, Oregon State U.)
  • Antarctic ice-sheet growth and subsequent variations in the Cenozoic, using coupled GCM-regional climate-ice sheet-sediment models (with Robert DeConto, U. Massachusetts, and the ANDRILL [ANTarctic geological DRILLing] project)
  • Climate system sensitivity to orbital forcing in the Pliocene and Pleistocene, using global climate and ice sheet models (with Christopher Poulsen, U. Michigan)
  • Coupling of global climate, ice sheet and geochemical models to investigate feedbacks and cycles across the Eocene-Oligocene boundary (with Lee Kump, PSU)
  • Warm Cretaceous climates, O18/O16 precipitation and sea-water distributions, using coupled atmospheric and ocean GCMs with isotopic capability (with Timothy White, PSU, and Christopher Poulsen and Jing Zhou, U. Michigan)
  • Using past GCM climates as an input to geochemical models of soil weathering over long time periods (with Jennifer Williams and Susan Brantley, PSU, and Yves Godderis, LMTG, France)
  • GCM modeling of climates of Earth-like planets tidally locked around M-type stars (with Adam Edson and James Kasting, PSU)
  • Neoproterozoic Snowball Earth global climate and ice modeling, using GCM and terrestrial ice sheet models, and an EBM with sea glacier flow (with James Kasting, PSU)
  • Climate connections with the demise of the Neanderthals, using the RegCM regional climate model over Europe around 30,000 years BP (with Eric Barron, PSU, and the international Stage 3 Project)
  • Modeling the Quaternary Ice Ages, sediment fluxes and 87Sr/86Sr budgets, with coupled GCM-ice sheet models (with Peter Clark and Steven Hostetler, Oregon State U.)
  • Coupling of a fine-grid continental-scale hydrology model with coarse-grid climate models, over modern North America (with Zhongbo Yu, U. Nevada Las Vegas)
  • Future anthropogenic climate change over North America and East Asia, using the RegCM and MM5 regional climate models (with Ming Chen, U. New Hampshire)
  • Extraordinary climates with extreme orbits, using GCM simulations with present Earth surface conditions (with Darren Williams, PSU-Erie)