| Full text | |
| Author(s): |
Jaschke Machado, A.
;
Rezende de Azevedo, T.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | REVISTA DE TELEDETECCION; v. N/A, n. 27, p. 12-pg., 2007-06-01. |
| Abstract | |
The surface temperature of the urban canyons in the city of Sao Paulo is remotely estimated through the use of precision infrared thermometers (IRTs). These instruments are set up on a mobile platform, which moves through the bottom of the canyons. The thermal patterns are verified, along a traverse, through the different kinds of soil coverage and occupation, during the early hours of a typical nocturnal period during the dry season. Air temperature measurements are also taken as well as estimates of the convective Q(H) flux, between the atmosphere and urban buildings. The presence of an atmospheric urban heat island is well identified around the urban center, with a magnitude of 2 degrees C. Over the vertical surface it appears that this phenomenon is not pronounced, although maximum thermal amplitude of around 6 degrees C between the colder analyzed surfaces and the warmer atmosphere is identified. (AU) | |