Monitor Laptev Sea Ice’s Change based on MODIS and AMSR2 Data

In the past decade, Intensified global warming has led to an accelerated melting of Arctic sea ice, which will eventually reduce global sea ice reserves and thus damage the global ecosystem. Arctic sea ice provides an important breeding ground for plankton and microorganisms, the basis of the region's food chain. Therefore, it is of great significance to monitor the dynamic changes in polar sea ice. At present, the dynamic monitoring of polar sea ice changes can be carried out based on remote sensing data, which has the advantages of low restrictions, high efficiency and low pollution. This study aims to analyze the changes in sea ice in the Laptev Sea based on remote sensing data from MODIS and AMSR2 from 2010 to 2024, so as to explore the trend of sea ice changes. The study found that the fluctuation of sea ice changes has become gentler, but the reserves are still decreasing; the Arctic sea ice concentration(SC), sea ice proportion(SP), and surface temperature(ST)show a significant negative correlation; From 2013 to 2024, the sea ice surface temperature showed a fluctuating upward trend, rising from 242.2K to 250.7K; From 2013 to 2023, the sea ice density at the mouth of the Lena River fluctuated downward, with a maximum value of 99% and a minimum value of 93.5%. From 2010 to 2024, the sea ice distribution ratio showed a fluctuating downward trend, with a maximum value of 71.04% and a minimum value of 48.70%.