Implementation of a one-dimensional enthalpy sea-ice model in a simple pycnocline prediction model for sea-ice data assimilation studies
To further explore enthalpy-based sea-ice assimilation, a one-dimensional (1D) enthalpy sea-ice model is implemented into a simple pycnocline prediction model. The 1D enthalpy sea-ice model includes the physical processes such as brine expulsion, flushing, and salt diffusion. After being coupled wit...
Published in: | Advances in Atmospheric Sciences |
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Main Authors: | , , |
Other Authors: | , , , , , |
Format: | Journal/Newspaper |
Language: | English |
Published: |
ADVANCES IN ATMOSPHERIC SCIENCES
2016
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Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11897/438751 https://doi.org/10.1007/s00376-015-5099-2 |
Summary: | To further explore enthalpy-based sea-ice assimilation, a one-dimensional (1D) enthalpy sea-ice model is implemented into a simple pycnocline prediction model. The 1D enthalpy sea-ice model includes the physical processes such as brine expulsion, flushing, and salt diffusion. After being coupled with the atmosphere and ocean components, the enthalpy sea-ice model can be integrated stably and serves as an important modulator of model variability. Results from a twin experiment show that the sea-ice data assimilation in the enthalpy space can produce smaller root-mean-square errors of model variables than the traditional scheme that assimilates the observations of ice concentration, especially for slow-varying states. This study provides some insights into the improvement of sea-ice data assimilation in a coupled general circulation model. National Natural Science Foundation [41206178, 41306006, 41376015, 41376013, 41176003]; National Basic Research Program [2013CB430304]; National High-Tech RD Program [2013AA09A505]; Global Change and Air-Sea Interaction Program of China [GASI-01-01-12] SCI(E) 中国科技核心期刊(ISTIC) ARTICLE xinrong_wu@yahoo.com 2 193-207 33 |
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