Do weather satellites can detect temperatures of different places without having sensors on the earth?

Answer 1

U take an inf red picture and u know the temperature of a few places which gives u the calibration scale so u can tell what the temperature is every where in the picture.

Answer 2

Temperature can be measured remotely using infra red sensors.

Answer 3

Theoritically possible, but if you want to know the exact temperature, you need sensors everywhere.

Answer 4

Yes, they can using their onboard sensors.