Question

calculate the solar declination
angle for march 31 in a
leap yeast​

Answer 1

Answer:

jauary 1

Explanation:

The Sun declination angle, δ, has the range: – 23.5° < δ < + 23.5° during its yearly cycle . The Sun declination angle is δ = – 23.5° on the winter solstice. sin δ = 0.39795⋅ cos [ 0.98563⋅ ( N – 173 ) ] ( 1 ) where the argument of the cosine here is in degrees and N denotes the number of days since January 1.

Answer 2

Concept:

Solar declination can be defined as

Solar declination = 23.45 × sin(N)

Where N is the number of days to the equinox which is closest.

Given:

A date 31 march.

Find:

Solar declination angle for march 31 in a leap year.

Solution:

If the date for which the solar declination is being calculated, is between September 23 and March 21, then the solar declination is in the southern hemisphere and if the date is between March 23 and September 23, then the solar declination is in the northern hemisphere. Here, the date is in the northern hemisphere, so the closest equinox is 23 September.

N = 176 days

Solar declination = 23.45 × sin ( 176° ) = 1.635 °N

Hence, the solar declination angle for march 31 in a leap year is 1.635 °N.

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