Abstract
Based on MODIS L1B data, we identify information of sea ice area, peripheral line and density, and also use Landsat data with higher resolution to verify the results obtained from MODIS data. Using pseudo color processing technology is more intuitive and more clear to show the various information of the Bohai sea. The whole process of sea ice information extraction is described in detail from MODIS data downloads to image processing and analysis. The selected data basically cover the entire process from the initial ice age, the peak ice age to the final ice age. The ideal results are obtained, and it also shows that the MODIS satellite data is feasible to monitor sea ice, which provides a reference for the establishment of monitoring sea ice model.
Highlights
Sea ice directly affects changes in sea conditions, sea levels, atmospheric circulation and climate
As the only inland sea in China, the Bohai Sea is located in the middle latitude area, but the sea water freezes every winter
The edge detection method is used to extract the outer edge of sea ice.The calculation of sea ice concentration is realized by using the single channel algorithm of inversion of sea ice concentration in Bohai sea
Summary
Sea ice directly affects changes in sea conditions, sea levels, atmospheric circulation and climate. As the only inland sea in China, the Bohai Sea is located in the middle latitude area, but the sea water freezes every winter. Monitoring the distribution and movement direction of sea ice is important to prevent and mitigate the sea ice disaster in winter. Based on Terra and Aqua satellites, MODIS has features of high spatial resolution, wide vision and high radiation resolution. Terra and Aqua satellites complement each other in time and improve remote sensing data of sea ice in the Bohai sea. The present situation of China and the evolution of sea ice in Bohai sea have been preliminarily, scientifically and objectively evaluated and summarized
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