# What's the relationship between dew point and temperature?

From a Ph.D dissertation, the writer change the land surface from nature earth to urbn and built up to compare the difference involving with this land use change.

Due to the urban heat land effect, the temperature of lower atmosphere above the surface increase, and the dew point decrease.

Dew point is a parameter represent the absolute moisture. When the temperature increase, how to analysis the dew point increase?