FEEDBACKS IN ONE-DIMENSIONAL CLIMATIC MOD ELS WITH CLOUD FORMATION BLOCK

A study of feedback mechanism associated with the water vapour, lapse rate and cloudiness is carried out using a 1D radiative-diffusion mode l with cloud formation block. The greenhouse warming due to doubling o f the atmospheric CO2 and 2% reduction of solar constant is calculated . The value of surface temperature change appeared to be about 1.0 K. That is much smaller than for standart 1D radiative-convective models. Results of model simulations also demonstrate a reduction of vertical size and liquid water content of the low clouds and therefore decreas e of their optical thicknesses.