Urban Aerodynamic Roughness Length Mapping Using Multitemporal SAR Data

Figure 13

Multitemporal SAR images of the test area. The red star indicates the position of calculation and the red lines indicate the upwind sector is in the 60° direction (from the 45° to 75° direction, the radius of 2500 m).

(a) June 13, 2009, COSMO-SkyMed

(b) December 6, 2009, COSMO-SkyMed

(c) December 9, 2010, COSMO-SkyMed

(d) March 15, 2011, ALOS PALSAR