Print Email Facebook Twitter Parameterization of urban sensible heat flux from remotely sensed surface temperature Title Parameterization of urban sensible heat flux from remotely sensed surface temperature: Effects of surface structure Author Yang, Jinxin (Guangzhou University) Menenti, M. (TU Delft Optical and Laser Remote Sensing; Chinese Academy of Sciences) Krayenhoff, E. Scott (University of Guelph) Wu, Zhifeng (Guangzhou University) Shi, Qian (Sun Yat-sen University) Ouyang, Xiaoying (Chinese Academy of Sciences) Date 2019 Abstract Sensible heat exchange has important consequences for urban meteorology and related applications. Directional radiometric surface temperatures of urban canopies observed by remote sensing platforms have the potential to inform estimations of urban sensible heat flux. An imaging radiometer viewing the surface from nadir cannot capture the complete urban surface temperature, which is defined as the mean surface temperature over all urban facets in three dimensions, which includes building wall surface temperatures and requires an estimation of urban sensible heat flux. In this study, a numerical microclimate model, Temperatures of Urban Facets in 3-D (TUF-3D), was used to model sensible heat flux as well as radiometric and complete surface temperatures. Model data were applied to parameterize an effective resistance for the calculation of urban sensible heat flux from the radiometric (nadir view) surface temperature. The results showed that sensible heat flux was overestimated during daytime when the radiometric surface temperature was used without the effective resistance that accounts for the impact of wall surface temperature on heat flux. Parameterization of this additional resistance enabled reasonably accurate estimates of urban sensible heat flux from the radiometric surface temperature. Subject Complete urban surface temperatureRadiometric temperatureSensible heat fluxUrban geometry To reference this document use: http://resolver.tudelft.nl/uuid:5120d429-06ce-418b-81ff-a22c10164c89 DOI https://doi.org/10.3390/rs11111347 ISSN 2072-4292 Source Remote Sensing, 11 (11) Part of collection Institutional Repository Document type journal article Rights © 2019 Jinxin Yang, M. Menenti, E. Scott Krayenhoff, Zhifeng Wu, Qian Shi, Xiaoying Ouyang Files PDF remotesensing_11_01347_v2.pdf 4.77 MB Close viewer /islandora/object/uuid:5120d429-06ce-418b-81ff-a22c10164c89/datastream/OBJ/view