What is the range of winter solstice? At noon, the height angle of the sun is the largest.

In winter solstice (tropic of Capricorn and its south), the height angle of the sun is the largest at noon. In winter solstice, the sun shines directly on the Capricorn, and the Capricorn and its south area are the days closest to the direct latitude of the sun in a year, so the noon sun height angle of the Capricorn and its south area reaches the maximum in a year.

The solar altitude angle is called altitude angle for short. When the solar altitude angle is 90, the solar radiation intensity is the largest; When the sun shines obliquely on the ground, the intensity of solar radiation is small.

On the solstice of winter, the sun shines directly on the tropic of Capricorn. The winter solstice is also the shortest and longest day in a year in the northern hemisphere (north of the Tropic of Cancer). The arctic circle is in a state of permanent night, and the Antarctic circle is in a state of extreme day. From winter to the future, the position of direct sunlight began to move northward, the daytime hours in the northern hemisphere increased day by day, the sun height increased day by day at noon, and the sun shadow gradually shortened.

Extended data

H = 90-| Latitude difference | (Latitude difference refers to the difference between the geographical latitude of a place and the latitude of the direct point of the day)

For example, if the latitude of A is 40 N, the noon sun height of A is found from the summer solstice.

From summer to morning, the latitude of direct sunlight is 23 26 ′ n, and the latitude difference with A is = 40-23 26 ′ =16 34 ′, so H = 90-16 34 ′ = 73 26 ′.

If you find the height of the sun at noon from winter to Sunday in one place. In winter solstice, the latitude of direct sunlight is 23 26', and the latitude difference with A is = 40+23 26' = 63 26', so H = 90-63 26' = 26 34'.

Calculation formula:

H=90 -(α-β)

* α is the latitude of the sun's direct point, and β is the required latitude (the north latitude is positive and the south latitude is negative).

Baidu encyclopedia-noon sun height angle