1 / 16

Ocean Model Development (and relation to ice shelves)

Ocean Model Development (and relation to ice shelves). IPCC summarized top two impacts of physical climate change as (a) air temperature, and (b) sea level Without any physical model of sea level, IPCC reported a seal level projection

loan
Download Presentation

Ocean Model Development (and relation to ice shelves)

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. Ocean Model Development (and relation to ice shelves) IPCC summarized top two impacts of physical climate change as (a) air temperature, and (b) sea level Without any physical model of sea level, IPCC reported a seal level projection Ocean models could be argued to be relevant to sea level change projections Ocean modeling has no meaningful plan to address one of IPCC two main’s concerns

  2. Relevance ofIce-Shelf Ocean Interaction Sea Level Rise (SLR) projection 2100 Changes in SL will have some regional character: past -> ‘fingerprints’ polar wandering self gravity ocean dynamic height Contributions are Steric and Eustatic

  3. Eustatic Component –Role of the Ice Sheets Main concern is marine portions of Greenland and Antarctica

  4. What’s happening inice shelf – ocean research Observational programs among the harshest /difficult environments to sample (ocean beneath kms of ice) Theoretical developments among the most challenging fluid dynamical behaviors (calving) Modeling Initiatives requires major reworking of ocean codes (kms of surface pressure, grounding line migration)

  5. Ice Processes

  6. Ocean Processes –Water Mass Transformation

  7. Ocean Processes –Other Considerations

  8. What have we observed in the last decade or so? Any big changes? Yes! The perimeter of the ice sheets, where they are floating, and where there exists warm ocean waters is undergoing dramatic change.

  9. Greenland Change:Jakobshavn Isbrae *

  10. Why Change @Jakobshavn Isbrae?

  11. Antarctica Change:Pine Island Glacier (PIG) *

  12. Why Change @Pine Island Glacier?

  13. Some Recent Ocean Observations:Depths and Temperatures at Jakobshavn, August 2009

  14. Some Future Ocean Observations:2010-2015 Greenland – Modest Ice Tongues Jakobshavn, Helheim (From Boat or Helicopter: CTD, XCTD, Glider, AUV) Antarctica – Massive Ice Shelves PIG, WISSARDS (From Icebreaker or Drilling: Profiling CTD, AUV)

  15. … and now on to ice-shelf – ocean interaction theory and model(l)ing …

More Related