Sea Ice Sensitivities in the 0.72 degrees and 0.08 degrees Arctic Cap Coupled HYCOM/CICE Models
Abstract
Perennial Arctic ice extent, which corresponds to the sea ice that remains during the summer minimum, has decreased over the years 1979 2007 by more than 10% per decade (Comiso et al., 2008). The decline has been faster over recent years, leading to very low ice concentration in the summers of 2007 and 2008 (Goosse et al. 2009) with the lowest observed sea ice extent in the satellite record (1979-present) occurring in September 2012 (Perovich et al. 2012). Further reduction in perennial ice extent will likely lead to the inception of new shipping lanes through the Arctic bringing both opportunities for commerce and the need for heightened defense scrutiny. Prediction of future Arctic sea ice conditions, on both short and longer-term time scales are dependent on the capability of the component models in integrated Arctic and global models. The long-term goal of this project, therefore, is to improve the performance of the sea-ice model used in the Navy's coupled ocean and sea-ice prediction systems. These models consist of the Hybrid Coordinate Ocean Model (HYCOM) and the Los Alamos National Laboratory (LANL) CICE model. The objectives of the project are to optimize the depiction of ice processes in existing Navy Research Laboratory (NRL) configurations of coupled HYCOM/CICE using sensitivity testing, and together with NRL implement and test new versions of CICE in these coupled model set-ups as they become available from the LANL developers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2013
- Accession Number
- ADA601136
Entities
People
- Julie L. McClean
Organizations
- Scripps Institution of Oceanography