A sensitivity study of the effects of solar luminosity changes on the earth's global temperature
Abstract
A radiativeconvection model of the atmosphere from the ground to about 60 km is used to study the response of the surface temperature to changes in the value of the solar constant. At a relative solar luminosity value of 1.2 with respect to the present value a moist adiabatic model is found to give a mean surface temperature of 29 C, over 30 C less than the corresponding calculation with an adiabatic lapse rate fixed to the usual 6.5 K/kcal value. With inclusion of surface albedo feedback in the model the system becomes unstable as the solar luminosity is lowered, resulting in a jump to a stable solution in which the earth is completely icecovered.
 Publication:

Annales Geophysicae
 Pub Date:
 February 1988
 Bibcode:
 1988AnGeo...6..101G
 Keywords:

 Atmospheric Models;
 Earth Surface;
 Radiative Heat Transfer;
 Solar Radiation;
 Stellar Luminosity;
 Surface Temperature;
 Adiabatic Conditions;
 Numerical Analysis;
 Solar Constant;
 Stellar Evolution;
 Stellar Interiors