Now we are all familiar with the appearance of the earth, which is a uniform and beautiful sapphire . Considering that the earth’s surface is about 70% ocean and 30% land, and the northern hemisphere accounts for most of the land area, the vast and deep ocean in the southern hemisphere should make the southern hemisphere darker than the northern hemisphere, but this is not the case overall: the reflectivity of the northern and southern hemispheres does not Significant difference. The latest research by climatologists believes that this is related to more storms in the southern hemisphere, and this balance will begin to change as global warming begins.
Generally speaking, the color of land is lighter than that of ocean. This is not only a difference in color, but also shows the rate of sunlight absorption and reflection. Light-colored land represents higher albedo, and darker oceans represent lower albedo, which means it absorbs more sunlight and heat. However, the specific heat of seawater is greater than that of land, and the temperature rise and fall are not obvious. Therefore, the southern hemisphere, which has more ocean area in the world, will have smaller seasonal temperature differences.