When was the first research found for Global warming?

Question

When was the first research found for Global warming?

Answer 1

When the ice started to melt near the end of the last Ice Age 10,000 years ago.

Answer 2

The idea was proposed as a theory in the late 1800s.

CO2 was started to be measured systematically in the late 1950s.

In the 1970s the data started to indicate the presence of man made global warming.

The data gradually accumulated until today, when it is sufficient to have convinced the vast majority of the reality of anthropogenic (man made) global warming.

Answer 3

Arrhenius, S., 1896: On the Influence of Carbonic Acid in the Air Upon the Temperature of the Ground. Philosophical Magazine, 41, 237-76.

"Carbonic acid" is CO2 dissolved in water.