SAR imagery for urban air quality

SAR imagery for urban air quality

[SDU:STU:ME] Sciences of the Universe/Earth Sciences/Meteorology

[SPI:SIGNAL] Engineering Sciences/Signal and Image processing

[SHS:GEO] Humanities and Social Sciences/Geography

[INFO:INFO_TS] Computer Science/Signal and Image Processing

Synthetic Aperture Radar image

urban micro-climate

air quality

variogram

Nantes

structure function

mapping

aerodynamic roughness length

This study focuses on the assessment of the potentialities of the Synthetic Aperture Radar imagery to study urban micro-climate and air quality. In urban area, air quality is quite dependent on the air flow drag which is influenced by the aerodynamic roughness parameters of the ground. These parameters are linked to the urban structural features and their typologies. They characterise the evolution of the vertical wind profile with the altitude. To extract structural features, the structure function (also called variogram) is processed on ERS images of the city of Nantes (France). A classification according to the structure function is done that leads to a mapping of the aerodynamic roughness by allotting a roughness parameter to each class.

Basly, Ludovic

Couvercelle, Christophe

Cauneau, François

Ranchin, Thierry

Wald, Lucien

Proceedings of the 18th EARSeL Symposium on Operational Remote Sensing for Sustainable Development

18th EARSeL Symposium on Operational Remote Sensing for Sustainable Development

1999

ENG

conference proceeding

http://hal-ensmp.archives-ouvertes.fr/hal-00461915

http://hal-ensmp.archives-ouvertes.fr/docs/00/46/19/15/PDF/earselsar_98.pdf

Enschede

Netherlands