Due to the Earth-like tilt of the Martian orbit, the Red Planet has a seasons similar to Earth's summer, autumn, winter and spring. The Curiosity rover, equipped with chemical analyzers and a meteorological station on board, has been taking environmental data for several years, which scientists are trying to bring into the system. So far, the data obtained is more likely to confuse scientists than help clarify the situation.
If on Earth at a certain point on the planet all seasonal changes are repeated with small deviations from year to year, then on Mars some phenomena may not be repeated when a similar season begins. A similar phenomenon was attributed to a sharp jump in methane in the fall in the Southern Hemisphere, which did not repeat next fall, and a strange temperature spread near one of the volcanoes, when in a few hours the air temperature can change from -100 degrees Celsius to +16 degrees, which is quite familiar to us. and it does not depend on whether this area is facing the Sun or not.