@article{oai:tokyo-metro-u.repo.nii.ac.jp:00002953, author = {キリハラ, ヒロヒト and ミカミ, タケヒコ and Kirihara, Hirohito and Mikami, Takehiko}, issue = {33}, journal = {Geographical Reports of Tokyo Metropolitan University}, month = {}, note = {Relative humidity in a green tract reaches 60% or more on the average. It is considered that influence of water vapor cannot be ignored in such high humid conditions. In this paper, we led an equation of potential temperature that contained the effect of water vapor. From vertical profiles of air temperature that Hamada and Mikami observed, we calculated potential temperatures in moist air when the condensation did not occur. The ground inversion layer by radiative cooling was about 25 m at 0:00 J.S.T. on July 29, 1992 and about 60 m at 6:00 J.S.T. above the ground, respectively. However, it was clarified that there was an isothermal part in potential temperatures in the night, which existed between the ground inversion layer and another inversion layer above that. Temperature was rising in the upper part of an isothermal part in any case. The altitude of the ground inversion layer induced by radiative cooling is the highest in 4:00 J.S.T. Thickness of the mixed layer which is thought to have occurred by subsidence reached 95 m at that time. After 6:00 J.S.T., the ground inversion layer dissolved rapidly.}, pages = {33--43}, title = {Diurnal variation of potential temperatures in a large urban green tract}, year = {1998} }