Today's weather forecast cloud

According to satellite cloud pictures, simple weather conditions can be distinguished: white represents cloudy and rainy areas, and the thicker the white, the greater the precipitation. Green represents land, and there are green areas, which means that the weather in this area is very good. Blue represents the ocean. (It can be added that the spring sandstorms in the north and northwest of China are shown in yellow on satellite images. )

Therefore, choose: B.