Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/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
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ISSN | 0035-9009 |
EISSN | 1477-870X |
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 |
推荐引用方式 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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