Coastal polynyas in the southwestern Weddell Sea: Surface fluxes, sea ice production and water mass modification
Coastal polynyas in the southwestern Weddell Sea were simulated using the Finite Element Sea Ice-Ocean Model forced with NCEP/NCAR Reanalysis data. The period 1990-2009 was used in analysis. Also, shorter model runs forced with GME and COSMO model data were branched off and compared. Depending on th...
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Other Authors: | , |
Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
Published: |
Universität Bremen
2013
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Subjects: | |
Online Access: | https://media.suub.uni-bremen.de/handle/elib/551 https://nbn-resolving.org/urn:nbn:de:gbv:46-00103445-15 |
Summary: | Coastal polynyas in the southwestern Weddell Sea were simulated using the Finite Element Sea Ice-Ocean Model forced with NCEP/NCAR Reanalysis data. The period 1990-2009 was used in analysis. Also, shorter model runs forced with GME and COSMO model data were branched off and compared. Depending on the region, the 20-year mean winter heat flux to the atmosphere is 310-510 W/m^2, whereof 50-60 W/m^2 are supplied by cooling the ocean and the remainder induces a sea ice production of 7-13 cm/(d m^2). The coastal polynyas (0.6% of the area) contribute 11% to the southwestern Weddell Sea sea ice production. In the mean 2 Sv High Salinity Shelf Water are exported from the continental shelves. Different forcing data sets can cause substantial disparities in the regional results. |
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