E. Atmospheric Structure in Equilibrium States

The dependency of the structure of the three-dimensional gray atmosphere on the solar constant and the runaway greenhouse states E.d. Specific Humidity Distribution (Troposphere) E.f. Zonal Wind Distribution (Troposphere)

e. Relative Humidity Distribution (Troposphere)

The meridional difference is more evident in the relative humidity distribution than in the specific humidity distribution. In all cases examined, the pattern of relative humidity is characterized by large values in the region of the Hadley circulation extending between 30 latitude north and south, decreasing values in the subtropical regions beyond the region of the Hadley circulation, and again increasing values in the polar regions. In the region of the Hadley circulation, relative humidity becomes almost constant due to the circulation effect. It can be presumed that the aridification in the subtropical regions is caused by the descending flow of the Hadley circulation. The structure of the relative humidity distribution described above appears to persist regardless of the value of solar constant adopted. While the pattern of the relative humidity distribution is similar among all the cases examined, the values of relative humidity decrease with an increasing amount of incident radiation. The reason for this phenomenon has not yet been well investigated and will be addressed in the future.

figure1
Figure 1:Distributions of relative humidity in equilibrium states.


E.e. Relative Humidity Distribution (Troposphere) The dependency of the structure of the three-dimensional gray atmosphere on the solar constant and the runaway greenhouse states E.d. Specific Humidity Distribution (Troposphere) E.f. Zonal Wind Distribution (Troposphere)