Look at this diagram, which is showing warm waters in red, cool waters in blue, and on the continents, what you're seeing in bright green, is the growth of vegetation, and in olive green, the dieback of vegetation.
看看这张图样，上面 用红色表示暖水区 蓝色表示冷水区 在大陆上，你们看到亮绿色的地方 是生长的植物 深绿色的部分是枯萎的植物