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Research on the influence of SAR reconstruction resolution on the prediction of sea ice lateral melting quantity
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Tao Xie1, Runbing Ai2, Yan Wang3, Binxian Liu4
Haiyang Xuebao | 2021, 43(7) : 173 - 182
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Haiyang Xuebao | 2021, 43(7): 173-182
• Polar sea ice and climate change •
Research on the influence of SAR reconstruction resolution on the prediction of sea ice lateral melting quantity
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Tao Xie1, Runbing Ai2, Yan Wang3, Binxian Liu4
Affiliations
  • 1School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • 2Zhumadian Meteorological Service, Zhumadian 450003, China
  • 3Tianjin Weather Modification Office, Tianjin 300074, China
  • 4Tianjin Central Observatory for Oceanic Meteorology, Tianjin 300074, China
Published: 2021-07-25 doi: 10.12284/hyxb2021107
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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
Tao Xie, Runbing Ai, Yan Wang, Binxian Liu. 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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Article Info
doi: 10.12284/hyxb2021107
  • Receive Date：2020-06-19
  • Online Date：2026-02-26
  • Published：2021-07-25
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  • Received：2020-06-19
  • Revised：2020-10-29
Funding
Affiliations
    1School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
    2Zhumadian Meteorological Service, Zhumadian 450003, China
    3Tianjin Weather Modification Office, Tianjin 300074, China
    4Tianjin Central Observatory for Oceanic Meteorology, Tianjin 300074, China
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