**5. Conclusions**

Corso del Popolo district is an example of urban texture modification planned as regeneration of the ancient part of the town of Terni, and the assessment of the sustainable construction in terms of SUHI mitigation is an important practice. Remote sensing data provided by space-borne sensors confirm their usefulness in the monitoring of SUHI spatial pattern and its temporal evolution, making it possible to understand if the urban changes move towards a sustainable development. The advantage of using satellite observation techniques relies, beyond the wide area covered and multiple passages, on the ability to convey information without the need of ground measurements, the latter being unevenly distributed. Even though sharp thermal variations are averaged inside the pixel area, the trend of the SUHI pattern inside the district can be well delineated.

The adopted solutions for mitigating environmental impacts prove their efficiency in terms of SUHI reduction, as verified by the comparative analysis of space-borne LST summer images before and after the interventions. The positive effect on the district microclimate can be ascribed to the not diminished albedo values of the new impervious surfaces and materials, the green areas, the underground parking, the partial covering of the local roadway and the combined effects of shading and air circulation enhancement connected to the new multi-storey buildings.

**Acknowledgments:** The work has been supported by "Fondo di Ricerca di Base di Ateneo", funded by the Department of Engineering of University of Perugia. Authors wish to thank Eng. Roberta Anniballe for the data processing support.

**Author Contributions:** Bonafoni, S., Baldinelli, G., Verducci, P. and Presciutti, A. conceived and designed the work and analyzed the data; Bonafoni, S. and Baldinelli, G. wrote the paper.

**Conflicts of Interest:** The authors declare no conflict of interest.
