Global Analyses of Urban Reflectance
Comparative Spectral Mixture Analysis of 28 cities using Landsat 7 shows consistent spectral
endmembers and predominantly linear mixing but interurban and intraurban variability in mixed
reflectances is comparable. The most consistent characteristic of urban reflectance, at moderate
spatial resolution, is spectral heterogeneity. Details available in:
Autocorrelation analyses of 1 m Ikonos panchromatic imagery in 14 cities quantify characteristic
spatial scales of urban mosaics. Comparative spectral mixture analyses show stronger linear mixing
and consistent spectral endmembers with moderate resolution Landsat mixture analyses. Details in:
Comparative analysis of Landsat 7 surface temperature and spectral endmember fractions
for 24 cities shows consistent relationships between surface temperature and vegetation
fraction and bidirectional variation of surface temperature with substrate fractions. Details in:
Global spatial analysis of 1992/93, 1994/95 and 2000 DMSP night lights
suggests consistent scaling across a wide range of city sizes. Comparison
with Landsat 7 imagery in 17 cities worldwide quantifies spatial extent of
overglow and no consistency in frequency detection threshold area reduction.
Comparison with island periphery overglow suggests a quasilinear relationship
between illuminated area and lateral extent of overglow. Details in: