Flash Cards

E3C10

What does the 304A solar parameter measure?

• A. The solar wind velocity at an angle of 304 degrees from the solar equator, correlated to geomagnetic storms
• B. The solar emission at 304 GHz, correlated to X-ray flare levels
• C. The ratio of X-ray flux to radio flux, correlated to sunspot number
• D. UV emissions at 304 angstroms, correlated to the solar flux index