Journal
ANTARCTIC SCIENCE
Volume 28, Issue 1, Pages 59-70Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0954102015000449
Keywords
albedo; annual cycle; oceanic heat flux; summer decay; thermodynamics
Funding
- National Natural Science Foundation of China (NSFC) [51221961, 41376186, 2011DFA22260, 41376005]
- Liaoning Educational Committee Foundation [L2013497]
- Research Foundation of State Key Laboratory of Coastal and Offshore Engineering of Dalian University of Technology [LP1217]
- Ministry of Education in Finland
- Academy of Finland [122412, 263918]
- Chinese Arctic and Antarctic Administration
- Academy of Finland (AKA) [122412, 122412] Funding Source: Academy of Finland (AKA)
Ask authors/readers for more resources
Landfast sea ice forms and remains fixed along the coast for most of its life time. In Prydz Bay, landfast ice is seasonal due to melting, mechanical breakage and drift of ice in summer. Its annual cycle of thickness and temperature was examined using a one-dimensional thermodynamic model. Model calibration was made for March 2006 to March 2007 with forcing based on the Chinese National Antarctic Research Expedition data, which consisted of in situ ice and snow observations and meteorological records at the Zhongshan Station. The observed maximum annual ice thickness was 1.74 m. The ice broke and drifted out in summer when its thickness was 0.5-1.0 m. Oceanic heat flux was estimated by tuning the model with observed ice thickness. In the growth season, it decreased from 25 Wm(-2) to 5W m(-2), and in summer it recovered back to 25 W m(-2). Albedo was important in summer; by model tuning the estimated value was 0.6, consistent with the ice surface being bare all summer. Snow cover was thin, having a minor role. The results can be used to further our understanding of the importance of landfast ice in Antarctica for climate research and high-resolution ice-ocean modelling.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available