1 / 12

8.2 kyr: Model + Data -> North American Meltwater Discharge

8.2 kyr: Model + Data -> North American Meltwater Discharge. Lev Tarasov and W. R. Peltier University of Toronto. Glacial Systems Model (GSM). Margin forcing (Dyke, 2003) Large ensemble approach Bayesian calibration of 22 model parameters against a large set of paleo proxies.

levij
Download Presentation

8.2 kyr: Model + Data -> North American Meltwater Discharge

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 8.2 kyr: Model + Data -> North American Meltwater Discharge Lev Tarasov and W. R. Peltier University of Toronto

  2. Glacial Systems Model (GSM) • Margin forcing (Dyke, 2003) • Large ensemble approach • Bayesian calibration of 22 model parameters against a large set of paleo proxies

  3. Drainage topography • Fast down-slope/storage surface drainage solver: dt=100 years • Coarse grained topography derived from HYDRO-1K DEM

  4. Deglacial drainage impact on climate?

  5. Deglacial drainage impact on climate?

  6. Deglacial drainage impact on climate?

  7. Pre-collapse sequence

  8. Pre-collapse sequence

  9. Collapse

  10. Summary Atlantic and Arctic discharge “appear to have little impact” during late deglacial stage Does -8.2 kyr event result just from outburst flood or from large sustained discharge over more than 200 years? Especially given “phase delay between outburst flood and inferred climate event”

  11. Agassiz lake volume chronology

  12. Calibration data

More Related