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Index/Topics/Greenhouse Gas Concentrations

Greenhouse Gas Concentrations

The measurement of greenhouse gas concentrations in the atmosphere.

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2 results
Feb 1, 2026

What are the main scientific uncertainties in climate projections and how do they affect policy choices?

Climate projections are robust in the broad conclusion that continued will warm the planet, but key scientific uncertainties—cloud and aerosol feedbacks, , , regional responses, and socioeconomic scen...

Jan 31, 2026

How do scientists measure global warming and which datasets are most reliable?

Scientists measure not with a single instrument but by assembling multiple complementary indicators—surface air temperatures, , sea level, greenhouse‑gas concentrations and the Earth’s energy imbalanc...