Explanation:

Both the statements are correct.
Insolation
•    The energy received by the earth’s surface in the form of short waves is termed as Incoming Solar Radiation or Insolation.
•    The amount of insolation received on the earth’s surface is far less than that is radiated from the sun because of the small size of the earth and its distance from the sun.
•    Moreover, water vapour, dust particles, ozone and other gases present in the atmosphere absorb a small amount of solar radiation. At equator due to cloudiness, insolation received is less.
•    The solar radiation received at the top of the atmosphere varies slightly in a year due to the variations in the distance between the earth and the sun.
•    There are some factors which influence insolation like rotation of the earth on its axis, the angle of incidence of the sun’s rays, duration of the day, transparency of the atmosphere.