DOI: 10.1175/JCLI-D-17-0732.1
Scopus记录号: 2-s2.0-85048695314
论文题名: Development and validation of a long-term, global, terrestrial sensible heat flux dataset
作者: Siemann A.L. ; Chaney N. ; Wood E.F.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 15 起始页码: 6073
结束页码: 6095
语种: 英语
英文关键词: Atmosphere-land interaction
; Energy budget/balance
; Fluxes
; Heat budgets/fluxes
; Sensible heating
; Surface fluxes
Scopus关键词: Atmospheric temperature
; Budget control
; Climate models
; Fluxes
; Infrared radiation
; Radiation protection
; Radiometers
; Surface measurement
; Atmosphere-land interactions
; Energy budget/balance
; Heat budgets/fluxes
; Sensible heating
; Surface flux
; Heat flux
; air-soil interaction
; Bowen ratio
; data set
; energy balance
; heat budget
; heating
; sensible heat flux
; surface temperature
英文摘要: Sensible heat flux is a turbulent flux driving interactions between the Earth's surface and the atmosphere, propelling local and regional climate. While turbulent fluxes are measured in situ, global scales require estimates at larger spatial scales, which can be made using remotely sensed satellite data. This study uses a first-order approximation to calculate the unconstrained hourly, terrestrial, 0.5°-resolution sensible heat flux using a land surface temperature consistent with the High Resolution Infrared Radiation Sounder (HIRS) retrievals, six reanalysis-based air temperature products, and a dataset of Zilitinkevich empirical constant Czil values. This sensible heat flux dataset is constrained using the daily Bowen ratio and available energy, to produce nine constrained, daily products. All resulting global, terrestrial averages are within the uncertainty range of ±6.3 W m-2 from the 38.8 W m-2 global annual average previously reported in the literature. The product constrained with the net radiation using the Moderate Resolution Infrared Spectroradiometer (MODIS) albedo and air temperature from the National Centers for Environmental Protection (NCEP) Climate Forecast System Reanalysis (CFSR) performs closest to the FLUXNET ground observations in the monthly analysis. These sensible heat flux estimates should be used for benchmarking global climate models at monthly or annual scales, and improvements should be made to the accuracy of input variables, particularly the temperature gradient, Czil estimates, and the roughness length. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111419
Appears in Collections: 气候减缓与适应
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作者单位: Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, United States
Recommended Citation:
Siemann A.L.,Chaney N.,Wood E.F.. Development and validation of a long-term, global, terrestrial sensible heat flux dataset[J]. Journal of Climate,2018-01-01,31(15)