Conclusion
This research has a role to perform further analysis on the assessment of the extent and the behavior of the energy
balance in open streets and its impact on the external thermal fluctuations.
Therefore, this document focuses on field measurements of the temperature of the air, temperature of the surface
soil, of relative humidity, the wind speed and the temperature of the under soil at two levels whatever the type of the
soil in asphalt or in concrete within tow measurement stations situated in open streets that were conducted from 8 to
10 July 2012 (three typical days in summer) selecting a bi-hourly intervals. The latent heat flow (LvE) is a dominant
part in the energy balance and may rise to more than 70% of energy balance (Rn) in an open street oriented northsouth
identified by asphalt soil (LvE = 670W/m2). In the open street oriented North East-South West identified by
concrete soil the sensible heat flow (H) is negative, equal to 0W/m2 at 06h00. Such research and plausible results are
needed to find reliable ways to determine accurately the energy balance in an urban environment in the future.