Remove 2005 Remove Cooling Remove Radiation
article thumbnail

The CO2 problem in six easy steps (2022 Update)

Real Climate

The fact that there is a natural greenhouse effect (that the atmosphere restricts the passage of infra-red (IR) radiation from the Earth’s surface to space) is easily deducible from; i) the mean temperature of the surface (around 15ºC) and, ii) knowing that the planet is normally close to radiative equilibrium. in IPCC TAR).

article thumbnail

The Rise and Fall of the “Atlantic Multidecadal Oscillation”

Real Climate

These interactions were thought to lead to alternating decades-long intervals of warming and cooling centered in the extra-tropical North Atlantic that play out on 40-60 year timescales (hence the name). Background.

article thumbnail

The enduring mystery of the solar corona

Physics World

It was a bold claim and some researchers initially struggled to accept the implications because it meant that energy must be flowing from the “cool” 6000 K surface of the Sun into the hotter corona – seemingly in violation of thermodynamics. This estimate was later revised upwards to 10 6 K and above. The jury is still out.