How do you calculate the solar flux?

Question

on the North Pole during summer solstice?

I know the tilt angle 23.5
and the solar flux equation on Earth is

Q = total solar power of sun / 4*pi*Radius between Sun and Earth

I know that during this time, the North Pole would be facing the sun for a longer duration for half a year I think while the South Pole would not be getting any sunlight. If so, to figure out the solar flux on the North Pole, do I have to adjust the 4*pi part of my equation? I am not sure if I have to use trig. since I am given angle or if that is just there to throw me off.

I am guessing since half of the Earth include the North Pole is facing the sun, we would not take into account the whole surface area of the Earth, just half. Also, the question asks the solar flux on the North Pole only, so that means, the answer has to be accounted for the North Pole-ish area only and not half of the Earth.

Please help me set up the equation thanks!

Answer 1

The solar flux is just a basic measurement of solar activity at 2800MHz (2.8GHz), which should not matter where you are on the Earth. The more Sunspots, the more the solar flux goes up. Right now the sunspot number is 35 and the flux is 89. If the sunspot number goes up, so will the flux. Since the flux is a measurement of a radio frequency (not light) from the Sun, it doesn't care where it is on the Earth.



During the time you indicated the flux would be the same for everywhere on Earth. The one thing about, the D layer of the ionosphere would be ionized more, which would attenuate RF frequencies from 1MHz-6MHz, but would offer long distance communications for frequencies of 10MHz and higher -- depending on how high the Flux is. The flux has a direct correlation to the maximum usable frequency. For example: right now we are coming out of one of the deepest solar minimums in history. With a solar flux of 67 the 20m (14-14.35MHz) amateur radio band is struggling to open across the country. Now, that the flux is in the high 80s, I was able to communicate with Taiwan, Asiatic Russia, and Japan today without much trouble from my mobile station. Right now, the 20m band is only open in daylight hours, but once the cycle gets under way it will be open 24/7.



Just remember, the solar flux is an RF measurement, not light, so the difference on different points of the Earth is going to be negligible.

Answer 2

1

Answer 3

44000x3.14-187,000miles per second x Zx-y-r x6.28 to the 14th power