Research on the influence of SAR reconstruction resolution on the prediction of sea ice lateral melting quantity

Xie Tao; Ai Runbing; Wang Yan; Liu Binxian

doi:10.12284/hyxb2021107

Volume 43 Issue 7

Jul. 2021

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Xie Tao，Ai Runbing，Wang Yan, et al. Research on the influence of SAR reconstruction resolution on the prediction of sea ice lateral melting quantity[J]. Haiyang Xuebao，2021, 43(7)：173–182 doi: 10.12284/hyxb2021107

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Research on the influence of SAR reconstruction resolution on the prediction of sea ice lateral melting quantity

doi: 10.12284/hyxb2021107

1.
School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
2.
Zhumadian Meteorological Service, Zhumadian 450003, China
3.
Tianjin Weather Modification Office, Tianjin 300074, China
4.
Tianjin Central Observatory for Oceanic Meteorology, Tianjin 300074, China

Received Date: 2020-06-19
Rev Recd Date: 2020-10-29

Available Online: 2021-05-31

Publish Date: 2021-07-25

Abstract

Abstract

Using RADASAT-2 sea ice SAR images, by the way of Prewitt, Sobel and Canny edge detection operators to calculate the sea ice perimeter in the image, and consider the influence of different image resolutions and different edge detection operators on the calculation results respectively. Combined with the ice lateral melting rate parameterization scheme, the sensitivity experiment of the lateral melting of sea ice to temperature was carried out, and the effect of image reconstruction resolution on the simulation results of sea ice lateral melting was analyzed. The results show that the best edge detection operator corresponding to different degrees of sea ice breakage in the image is different, and the best resolution is also different. Under the condition of only lateral melting, the melting area of sea ice increases exponentially with increasing temperature. The simulation trends of the three operators are basically the same. The Prewitt operator has the best simulation effect, and the corresponding optimal reconstruction resolution is 30 m×30 m, 65 m×65 m and 155 m×155 m.
- SAR,
- lateral melting of sea ice,
- reconstruction resolution,
- edge detection

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References(20)

References

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