Sea ice temperature and mass balance measurements from ice mass-balance buoy in the central Arctic Ocean

LI Na; LIU Ji-ping; ZHANG Zhan-hai; CUI Lin; LEI Rui-bo

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LI Na, LIU Ji-ping, ZHANG Zhan-hai, CUI Lin, LEI Rui-bo. Sea ice temperature and mass balance measurements from ice mass-balance buoy in the central Arctic Ocean[J]. Haiyang Xuebao, 2011, 33(2): 20-26.

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LI Na, LIU Ji-ping, ZHANG Zhan-hai, CUI Lin, LEI Rui-bo. Sea ice temperature and mass balance measurements from ice mass-balance buoy in the central Arctic Ocean[J]. Haiyang Xuebao, 2011, 33(2): 20-26.

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Sea ice temperature and mass balance measurements from ice mass-balance buoy in the central Arctic Ocean

1.
Polar Research Institute of China, Shanghai 200136, China;Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China
2.
Key Laboratory of State Oceanic Administration for Polar Science, Shanghai 200136, China
3.
National Ocean Technology Center, State Oceanic Administration, Tianjin 300111, China
4.
Polar Research Institute of China, Shanghai 200136, China;Key Laboratory of State Oceanic Administration for Polar Science, Shanghai 200136, China

Received Date: 2010-08-22

Abstract

Abstract

As the integrator of both the surface heat budget and the ocean heat flux, the mass balance of sea ice is a key climate-change indicator. A set of IMB (Ice Mass-balance Buoy) was deployed in the central Arctic Ocean during the 3rd arctic research expedition of China.Analysis of 11 months’data from August 2008 to July 2009 shows that aseasonal cycle is obvious on the temperature of sea ice. With the air temperature decreases, a cold front propagates down through the ice in the fall. The growth/ablation rate of sea ice bottom is mainly controled by water temperature below, and reaches its maximum 1.7 cm/d in the early February. Growth season of sea ice bottom lasts from the middle October in 2008 to the end June in 2009, with an average bottom growth rate of 0.6 cm/d and total sea ice growth of 160.3 cm.Bottom melting begins in the early July, being one-month lag when comparing with surface melting. Correlation analysis between the daily ice drift and the 10m wind gives a correlation coefficient of 0.14(99% significance), ice moves at 2.13% of the wind speed.
- Arctic Ocean,
- sea ice mass balance,
- CHINARE-2008,
- buoy

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References(16)

References

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