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A season is a division of the year marked by changes in weather, ecology and hours of daylight. Seasons result from the yearly orbit of the Earth around the Sun and the tilt of the Earth's rotational axis relative to the plane of the orbit.
The warming trend results in a change to the seasonal temperaturecycle over the decades, with a delay in the peak in the temperature cycle during autumn between the 1950s and 2000s ofâ¼10â20 days.he warming trend results in a change to the seasonal temperaturecycle over the decades, with a delay in the peak in the temperature cycle during autumn between the 1950s and 2000s ofâ¼10â20 days.