PIPS 3.0 Home PagePIPS Model domain and bathymetryPIPS Spinup output (images, animations, description)PIPS Ice Model Improvements18km Stand-alone Sea-Ice model

Welcome to the NPS PIPS 3.0 Development Page
9km model domain and bathymetry. Click on the image for a larger 740Kb gif image

Link to Office of Naval Research

U. S. Navy Polar Ice Prediction System Upgrade

Link to National Science Foundation

Welcome to the PIPS 3.0 page. This site has been set up to provide a means for investigators associated with the Navy Polar Ice Prediction System upgrade to exchange information and ideas. The goal of PIPS 3.0 is to update PIPS using the latest physics and computational advances in a parallel computing environment. 

PIPS 3.0 Development Issues

The model development team welcomes feedback from all interested parties, particularly those who will be running the model operationally at the Fleet Numerical Meteorology and Oceanography Center (FNMOC) in Monterey and the end users at the National Ice Center (NATICE) in Suitland.   Some possible areas for comment:

  • During model spin-up, processing time for a coupled ice*-ocean model is three hours of processor time per week of integration and seven days of processor time per year of integration on 128 processors of the T3E at the Arctic Region Supercomputer Center in Fairbanks, Alaska. Future testing on DSM machines is planned.  Is this fast enough for operational purposes?  (* the coupled ice and ocean models are currently earlier reconfigured versions.  The ocean model will be upgraded to POP 1.1.1 and the new ice model is discussed on the Ice Model Improvements page.)
  • We have improved the vertical resolution in the model so the arctic shelves, continental slopes and submarine ridges are accurately represented hence the 45 levels. This allows 17 levels in the upper 300 m and a maximum layer thickness in the deep ocean of 300m. (click here for vertical resolution information)
  • The high vertical resolution raises a question about forcing for the 9 km Stand-Alone Sea Ice Model.  What level or levels of temperature, salinity and velocity fields should be archived for use in a stand-alone or coupled sea ice model?  Layer 2 in the 9 km ocean model represents circulation from 5-10m.  Would a deeper layer be more appropriate, or perhaps an average of several layers, say 5-8 (26-53 m)?
  • Any other comments?

Comments/questions can be put on the web or sent directly to Wieslaw Maslowski


  • Circulation of the Baltic Sea and its connection to the Pan-Arctic region - a large scale and high-resolution modeling approach  

    (Maslowski, W. and W. Walczowski, Boreal Environment Research, Vol.7, No.4, pp.319-325, 2002)

    PDF version (3.6MB)


  • On Large Scale Shift in the Arctic Ocean and Sea Ice Conditions during 1979-1998

    (Maslowski et al., Annals of Glaciology, Vol.33, pp.545-550, 2001)

    HTML version (37kB)


  • Modeling Recent Climate Variability in the Arctic Ocean

    (Maslowski et al., Geophys. Res. Ltrs., Vol.27, No.22, pp.3743-3746, 2000)

    HTML version (33 kB)     PDF version (161 kB)   


  • List of other publications (pdf 5.6kB)



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Contact Information

                                                 Email Address                                 Telephone

         Wieslaw Maslowski           maslowsk@nps.navy.mil                  (831) 656-3162

         Oceanography Department
         Naval Postgraduate School
         833 Dyer Road
         Monterey, CA 93943-5122
         Fax (831) 656-2712


             The PIPS upgrade and development of the 9km ocean model are funded with grants from:

Link to Office of Naval Research

Link to National Science Foundation

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- Last modified 01 August 2003 -
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