Question

Give reason: Cloudy days are warmer than cloudless days.

Answer 1

That is very simple. All the light absorbed by earth is radiated back to the atmosphere as infrared rays and nearly escape (in north India people throw cold water on bricks laid floor-British idea- to cool down the surface-during the summer evenings); otherwise the Earth would have become so hot that we will not exist today. Even the short waves (ultra-violet and the visible absorbed by the Earth is radiated back to the outer space as infrared. Clouds, on the other hand absorb most of the infra-red radiated by Earth and sends back. Snow and ice on top of hills reflect back instantly the sunlight. Refer “albido” the reflecting power of different materials. A cloudy night will be warm. A clear sky will bring “Fogs” if enough moist air is there and no surface wind.

Answer 2

Cloudy days are warmer than cloudless days because:

● The clouds in the climate go about as a hindrance from heat.

● In the event that the sky is clear the warmth transmitted from the earth's surface will escape without difficulty into the upper skies or space bringing about the cooler temperature.

● Be that as it may, when there is a cloudy sky, the clouds go about as a boundary to the warmth attempting to get away and along these lines prompting a hotter air.

● The warmth discharged from the world's surface is caught by the clouds and reflected back to the earths's surface.