What is ghe difference between insulation and terrestrial radiation
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Insolation is the amount of solar radiation that reaches the earth's surface through shortwaves. The earth also radiates heat energy like all other hot object. This is known as terrestrial radiation. The annual mean temperature on the surface of the earth is always constant.

Explanation:

The energy emitted by the sun is known as solar radiation. The incoming solar radiation to the earth is known as insolation. Radiation from the earth is called terrestrial radiation.

Solar radiation is all the radiant energy emitted by the sun. Solar irradiance is the power per unit area received from the Sun in the form of electromagnetic radiation measured in space or at the Earth's surface. Isolation is the total solar radiation that reaches the earth's surface.