Continuous temperature profiles observations in atmospheric boundary layer on the basis of stationary
and mobile microwave profilers allow to obtain unique data and to investigate the UHI over
the big cities. And its clear that remote sensing in studying UHI is very efficient.
Two types of UHI were identified on the basis of the temperature profile measurements: The
warmer dome of the urban heat at all levels, and low warmer dome in combination with the lens
of the cold air above it. The lens of cold, placed under the dome is a result of both radiation
balance deformation in more humid and polluted urban air and more active mixing processes in
more unstable urban air.
UHI exists not only under the conditions accompanied by the elevated pollution levels, but also
under that one when relatively clear air does not accumulate urban polluting outbreaks.
The most pronounced UHI is observed in the morning and at night. The accumulation of the
pollutants and water vapor in the urban air occurs this time and UHI reaches its maximal intensity.
During the day, the UHI is broken down or remains only in the low 300 meters.