Arctic sea ice volume estimation method based on CryoSat-2 Satellite altimeter data

Wang Manman; Ke Changqing; Shao Zhude

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Wang Manman, Ke Changqing, Shao Zhude. Arctic sea ice volume estimation method based on CryoSat-2 Satellite altimeter data[J]. Haiyang Xuebao, 2017, 39(3): 135-144.

Citation:

Wang Manman, Ke Changqing, Shao Zhude. Arctic sea ice volume estimation method based on CryoSat-2 Satellite altimeter data[J]. Haiyang Xuebao, 2017, 39(3): 135-144.

Wang Manman, Ke Changqing, Shao Zhude. Arctic sea ice volume estimation method based on CryoSat-2 Satellite altimeter data[J]. Haiyang Xuebao, 2017, 39(3): 135-144.

Citation:

Wang Manman, Ke Changqing, Shao Zhude. Arctic sea ice volume estimation method based on CryoSat-2 Satellite altimeter data[J]. Haiyang Xuebao, 2017, 39(3): 135-144.

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Arctic sea ice volume estimation method based on CryoSat-2 Satellite altimeter data

1.
School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China;Collaborative Innovation Center of South China Sea Studies, Nanjing 210023, China
2.
School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China

Received Date: 2016-06-21

Abstract

Abstract

In the last 30 years, the Arctic sea ice is undergoing drastic changes. Sea ice volume is one of the important indicators to quantify the change of sea ice. This paper according to the CryoSat-2 data and OSI SAF sea ice type data in Arctic in 2015. We extracted freeboard, snow depth, sea ice concentration and ice type, and obtained the raster data set in 25 km×25 km spatial resolution through data reprocessing including interpolation, projection transformation, raster conversion, spatial resampling and so on. According to the hydrostatic equilibrium principle calculated the sea ice thickness value in every pixel, multiply ice area in the corresponding pixels thus estimated the sea ice volume of the sea ice concentration exceeds 75%, and analyzed the monthly and seasonal changes characteristics. We used high-accuracy sea ice thickness products from NASA Ice Bridge to verify thickness retrieved from CryoSat-2 Satellite. The results show that there is a high consistency of r=0.72. The sea ice is thickest in spring and thinnest in summer. The thick sea ice concentrated around the north coast of Greenland and Ellesmere Island. Generally the MYI is thicker than the first-year ice FYI. Sea ice volume is largest in winter, about 23.30×10³ km³, almost a reduction of 70% after the summer melt. The seasonal fluctuation of the FYI volume is larger than the MYI.
- CryoSat-2,
- sea ice types,
- snow depth,
- sea ice thickness,
- sea ice volume,
- Arctic Ocean

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References(37)

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