How did you get the photo of typhoon eye?

Satellite photography does not need close range, and there are many kinds of photography means and equipment.

1. The typhoon eye, the typhoon center, is a strong weather system that occurs in the tropical ocean. It increases gradually from the periphery to the center at first, and then increases rapidly. In the central area with a diameter of several tens of kilometers, the wind decreases rapidly, the rainfall stops, and there is a partially cloudy sky with sunshine during the day and stars at night. This is a unique "eye" in tropical cyclones such as typhoons, and it is called typhoon eye in meteorology.

2. Eye-closing area is an eye area with single-layer structure and discontinuous angle less than 90. Combined with the surrounding eye wall, the eye closure area can be further divided into three subcategories: round eye, quasi-round eye and polygonal eye.

3. The quasi-circular eye area is oval or oval, and the edge of the eye wall is smooth without obvious straight lines or corners. In this study, the existence time of quasi-circular eye area morphology is generally less than 8 hours. The stability of this structure is poor, and it appears in transition form in most cases.

4. The eye opening area is a single-layer peripheral eye wall, and the discontinuous angle is greater than 90 and less than180. When the eyes open, the typhoon structure is poorly organized and its intensity is generally weak. In infrared and visible light cloud images, some cases have obvious cloud eye formation, and there are spiral cloud bands around the eye area, but there is no thick and organized eye wall around it, and sometimes the circulation can reach more than one circle.

5. Mature tropical cyclones (with intensity above tropical storm level) often have a clear and semi-cloudy area with a diameter of several tens of kilometers in the middle of the deep cloud area, which is called the eye area. On the satellite cloud image, the eye area appears as a big black spot near the center of the dense cloud area. The annular cloud area around the eye area is called cloud wall or eye wall.