1 Cumulus is a white cloud with a flat bottom and a round top, like Chinese cabbage. This cloud appears in the morning, most in the afternoon, and gradually dissipates at night. When its shape is large and its color turns gray, it is called cumulus. It's sunny and it won't rain. Cumulonimbus clouds grow very high upward under the action of air convection, like peaks or fortresses standing in the sky, and the top is blurred. There are thunderstorms and heavy rains, and three layers of cumulus clouds are scattered in the sky in rows or in a large area; The edges of the clouds are connected with each other, and the blue sky can be seen from the gap; It usually doesn't rain in gray, but it will rain a little when the clouds are thick. The color of the four-layer cloud is gray and bright in the sky; When the clouds are very low, the fog on the ground generally doesn't rain, and it only rains when it is particularly thick in Mao Mao. 5 High-level clouds are layered and dark, like a curtain covering the sky; When it is thin, you can see the sun or the moon through the clouds; When it is thick, it can block the sun and moonlight. It will rain in summer and snow in winter. 6. The stratocumulus in the nimbostratus gradually thickens and looks watery, which is nimbostratus. When it rains, the stratiform cloud is nimbostratus. 7. Flat white clouds are neatly arranged in a row, and clouds are connected or separated from each other. The light whose edge passes through the sun or the moon forms a beautiful halo with red outside and blue inside, which surrounds the sun or the moon. Isolated cumulus clouds, such as fish flying shuttles and as thick as cotton piles (except for a long drought), do not bode well. 8 cirrus clouds appear in the sky, the color is white, like tangled silk, like feathers, like tulle, like ribbons; Sometimes, cirrus clouds extend from one direction in the sky, and slowly the whole sky unfolds. The former indicates good weather, while the latter indicates that it will turn cloudy and rain. Cirrocumulus is made up of small white spherical clouds, which are arranged in the high sky, like fish scales, like walking pearls, like ripples of a breeze blowing through the pool water. It's sunny. 10 cirrostratus's thin silk clouds covered the sky, and the sky turned white. The edge of the cloud is like a filament. Sunlight or moonlight passing through it will produce an internal infrared purple halo called "solar halo" or "lunar halo". I wonder if it will be useful to write it down occasionally when you are reading?