Articles | Volume 8, issue 7
https://doi.org/10.5194/amt-8-2699-2015
https://doi.org/10.5194/amt-8-2699-2015
Research article
 | 
03 Jul 2015
Research article |  | 03 Jul 2015

The effect of radiometer placement and view on inferred directional and hemispheric radiometric temperatures of an urban canopy

C. Adderley, A. Christen, and J. A. Voogt

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Short summary
Any radiometer at a fixed location has a biased view when observing a convoluted, three-dimensional urban canopy. The bias of various sensor views (nadir, oblique, hemispherical) is quantified. The error in inferring surface temperatures ranged between -2.6 and +2.9K relative to the complete surface temperature. For a hemispherical pyrgeometer, it was found that above 3.5 times the mean building height the horizontal positional error is less than the typical accuracy of such sensors.