干旱区生态环境知识资源中心(Arid): Quantification and Mapping of Satellite Driven Surface Energy Balance Fluxes in Semi-Arid to Arid Inter-Mountain Region

Arid

DOI	10.3390/rs12244019
	Quantification and Mapping of Satellite Driven Surface Energy Balance Fluxes in Semi-Arid to Arid Inter-Mountain Region
	Acharya, Bibek; Sharma, Vivek; Heitholt, James; Tekiela, Daniel; Nippgen, Fabian
通讯作者	Sharma, V (corresponding author), Univ Florida, Inst Food & Agr Sci, Agr & Biol Engn Dept, Gainesville, FL 32611 USA.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:24
英文摘要	Crop evapotranspiration (ETc) estimates, on a regional scale, hold enormous potential in managing surface and groundwater resources. This is particularly important for the headwater state of Wyoming, which provides water to found major river basins of the US. In this study, METRIC (Mapping evapotranspiration at high resolution with internalized calibration), a satellite-based image processing model, was used to map and quantify daily, monthly, and seasonal ETc and other energy balance fluxes, i.e., net radiation (R-n), sensible heat (H), and soil heat flux (G) dynamics for different land-use classes. Monthly and seasonal ETc estimated were further used to approximate regional water consumption patterns for different land-use types for nine irrigation districts in semi-arid to arid intermountain region of Big Horn Basin (BHB), Wyoming. The validation of METRIC retrievals against Bowen ratio energy balance system (BREBS) fluxes measured over three vegetative surfaces, viz. sugar beet in 2017, dry bean in 2018, and barley in 2019, indicated high accuracy. The pooled correlation observed between estimated (pooled) and measured instantaneous fluxes had R-2 values of 0.91 (RMSE = 0.08 mm h(-1), NSE = 0.91), 0.81 (RMSE = 49.6 Wm(-2), NSE = 0.67), 0.53 (RMSE = 27.1 Wm(-2), NSE = 0.53), and 0.86 (RMSE = 59.2 Wm(-2), NSE = 0.84) for ETc, R-n, G, and H, respectively. The biggest discrepancy between measured and estimated monthly ETc values was observed during times when BREBS flux tower footprint was devoid of any crops or the crops at footprint were not actively transpiring. Validation results improved when comparisons were made on monthly scales with METRIC underestimating growing season ETc in the range between 3.2% to 6.0%. Seasonal ETc by land-use type showed significant variation over the study area where crop ETc was 52% higher than natural vegetation ETc. Furthermore, it was found that, in the arid to semi-arid intermountain region of Wyoming, the contribution of irrigation to total seasonal ETc varied in the range of 73-81% in nine irrigation districts that fall within the study area. The high relative contribution of irrigation highlights the importance of identifying and quantifying ETc for improved management in irrigation system design and water allocation.
英文关键词	crop evapotranspiration surface energy balance flux METRIC Landsat mountain region
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000603190000001
WOS关键词	CROP COEFFICIENTS ; HEAT-FLUX ; EVAPOTRANSPIRATION ; WATER ; ALGORITHM ; ALBEDO ; FIELD ; PARAMETERIZATION ; PRECIPITATION ; REFLECTANCE
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369214
作者单位	[Acharya, Bibek; Sharma, Vivek] Univ Florida, Inst Food & Agr Sci, Agr & Biol Engn Dept, Gainesville, FL 32611 USA; [Heitholt, James; Tekiela, Daniel] Univ Wyoming, Coll Agr & Nat Resources, Dept Plant Sci, Laramie, WY 82071 USA; [Nippgen, Fabian] Univ Wyoming, Coll Agr & Nat Resources, Dept Ecosyst Sci & Management, Laramie, WY 82071 USA
推荐引用方式 GB/T 7714	Acharya, Bibek,Sharma, Vivek,Heitholt, James,et al. Quantification and Mapping of Satellite Driven Surface Energy Balance Fluxes in Semi-Arid to Arid Inter-Mountain Region[J],2020,12(24).
APA	Acharya, Bibek,Sharma, Vivek,Heitholt, James,Tekiela, Daniel,&Nippgen, Fabian.(2020).Quantification and Mapping of Satellite Driven Surface Energy Balance Fluxes in Semi-Arid to Arid Inter-Mountain Region.REMOTE SENSING,12(24).
MLA	Acharya, Bibek,et al."Quantification and Mapping of Satellite Driven Surface Energy Balance Fluxes in Semi-Arid to Arid Inter-Mountain Region".REMOTE SENSING 12.24(2020).