What is the hurricane blowing above the head of WeChat startup interface? When was this photo taken?

The knowledge point of this topic is "seasonal movement of pressure belt and wind belt" Due to the revolution of the earth, the direct point of the sun moves between the tropic of cancer with the change of seasons, resulting in the seasonal movement of the pressure zone and the wind zone.

"This topic is a new situation for students, and high school textbooks don't talk about satellite cloud pictures in weather forecast. If many students don't watch the weather forecast at ordinary times, they don't know that the white on the earth in the picture represents the cloud system at first, and then judge that the southern hemisphere is covered by a thick cloud system according to the cloud system, and the global pressure belt moves south, thus inferring that it should be taken around the winter solstice in 65438+February. "

In fact, this picture is based on the famous photo "Blue Marbles" PS taken by the crew of Apollo 17. The shooting time of "Blue Marbles" is1972 65438+February 7 (the "heavy snow" in the lunar calendar, and the "winter solstice" in that year was1972 65438+February.