According to foreign media slashgear, a new study says sea ice can cause climate change. The study found that sea ice is not simply a passive response to climate change. < / P > < p > the researchers said that the small ice age, which caused the cooling of Europe from the 14th century to the mid-18th century, was caused by “sudden” changes within the climate system. The little ice age was probably caused by the significant increase of sea ice, rather than by volcanic eruption or other factors. According to the study, under suitable conditions, climate change can occur spontaneously without external forces. < p > < p > a comprehensive reconstruction of sea ice shows that sea ice has been transported from the Arctic Ocean to the North Atlantic through the Fram Strait in the past 1400 years. The reconstruction shows that the little ice age was not a real ice age, but a regional cooling centered on Europe caused by the abnormal outflow of sea ice from the Arctic Ocean to the North Atlantic Ocean in the 14th century. The researchers pointed out that previous experiments used numerical climate models and lacked physical evidence. The new study uses geological records to confirm the model results. < / P > < p > the researchers used records of marine sediment cores drilled from the Arctic and North Atlantic oceans to obtain detailed information on sea ice over the past 1400 years. The core contains compounds produced by algae living in sea ice, shells of unicellular organisms living in different water temperatures, and debris collected from sea ice and carried over a long distance. < / P > < p > the team said the core samples provided enough detailed records to detect climate change on a 10-year time scale. These climatic records show that the sea ice from the Arctic Ocean to the North Atlantic Ocean increased significantly from about 1300 to the peak in 1350 and ended abruptly in the late 1300’s. The iPhone 12 keynote has been recorded in Apple park