Arid
DOI10.1002/qj.3112
A methodology for computing spatially and temporally varying surface sensible heat flux from thermal imagery
Morrison, Travis J.1; Calaf, Marc1; Fernando, Harindra J. S.2; Price, Timothy A.1; Pardyjak, Eric R.1
通讯作者Pardyjak, Eric R.
来源期刊QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
ISSN0035-9009
EISSN1477-870X
出版年2017
卷号143期号:707页码:2616-2624
英文摘要

Thermal infrared imagery provides a measure of surface temperature by quantifying the thermal emission of radiation from objects. In this work, we propose a novel approach for computing surface sensible heat fluxes from a time series of thermal imagery sampled at 20 Hz. The approach consists of using a surface energy budget, where the ground heat flux is easily computed from limited measurements using a force restore-type methodology, the latent heat fluxes are neglected, and the energy storage is computed using a lumped capacitance model. Preliminary validation of the method is presented using experimental data acquired at a desert playa in western Utah from an intensive observation period during the Mountain Terrain Atmospheric Modeling and Observations (MATERHORN) Program. The sensible heat fluxes computed from thermal imagery show encouraging agreement (approximate to 4% difference for 1 h averaged fluxes computed with the force-restore method) compared to heat fluxes obtained using the eddy-covariance technique, however additional evaluation is required to confirm the method’s validity. Further, the technique illustrates the richness of surface heat flux spatio-temporal structure even over very smooth surfaces.


英文关键词arid environment sensible heat flux surface energy budget thermal imagery surface heterogeneity
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000414551000022
WOS关键词ENERGY-BALANCE CLOSURE ; INFRARED THERMOGRAPHY ; BOUNDARY-LAYER ; RAMAN-LIDAR ; TURBULENCE ; TRACKING ; PLAYA ; FLOW ; WALL
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201771
作者单位1.Univ Utah, Dept Mech Engn, Salt Lake City, UT 84112 USA;
2.Univ Notre Dame, Environm Fluid Dynam Labs Civil & Environm Engn &, Notre Dame, IN 46556 USA
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GB/T 7714
Morrison, Travis J.,Calaf, Marc,Fernando, Harindra J. S.,et al. A methodology for computing spatially and temporally varying surface sensible heat flux from thermal imagery[J],2017,143(707):2616-2624.
APA Morrison, Travis J.,Calaf, Marc,Fernando, Harindra J. S.,Price, Timothy A.,&Pardyjak, Eric R..(2017).A methodology for computing spatially and temporally varying surface sensible heat flux from thermal imagery.QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY,143(707),2616-2624.
MLA Morrison, Travis J.,et al."A methodology for computing spatially and temporally varying surface sensible heat flux from thermal imagery".QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY 143.707(2017):2616-2624.
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