Temperature distribution as a function of radius predicted by the MARCS model for Aldebaran (black solid line) and the temperature of the MOLsphere derived from our modeling (red hatched rectangle). The panel a) shows the entire temperature range covered by the MARCS photosphere (note the logarithmic scale both for the temperature and radius), while the panel b) shows a lower temperature region including the upper photosphere and MOLsphere on the linear scale.