Estimation of the all‐wave urban surface radiation balance by use of ASTER multispectral imagery and in situ spatial data

metropolitan city of Athens was estimated within about ±44.5 Wm � 2 . The atmospheric downward longwave flux was estimated with the use of radiosonde measurements. The Santa Barbara DISORT atmospheric radiative transfer model was used for the simulation of the radiative transfer in the atmosphere. The results indicate that ASTER multispectral imagery enables a better understanding of energy aspects and their causes and effects, providing an important addition to conventional methods of monitoring the urban environment. INDEX TERMS: 3322 Meteorology and Atmospheric Dynamics: Land/atmosphere interactions; 3359 Meteorology and Atmospheric Dynamics: Radiative processes; 3360 Meteorology and Atmospheric Dynamics: Remote sensing; 7538 Solar Physics, Astrophysics, and Astronomy: Solar irradiance;

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