干旱区生态环境知识资源中心(Arid): Estimation of Evapotranspiration and Its Components across China Based on a Modified Priestley-Taylor Algorithm Using Monthly Multi-Layer Soil Moisture Data

Arid

DOI	10.3390/rs13163118
	Estimation of Evapotranspiration and Its Components across China Based on a Modified Priestley-Taylor Algorithm Using Monthly Multi-Layer Soil Moisture Data
	Xing, Wanqiu; Wang, Weiguang; Shao, Quanxi; Song, Linye; Cao, Mingzhu
通讯作者	Xing, WQ (corresponding author), Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Peoples R China. ; Xing, WQ (corresponding author), Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:16
英文摘要	Although soil moisture (SM) is an important constraint factor of evapotranspiration (ET), the majority of the satellite-driven ET models do not include SM observations, especially the SM at different depths, since its spatial and temporal distribution is difficult to obtain. Based on monthly three-layer SM data at a 0.25 degrees spatial resolution determined from multi-sources, we updated the original Priestley Taylor-Jet Propulsion Laboratory (PT-JPL) algorithm to the Priestley Taylor-Soil Moisture Evapotranspiration (PT-SM ET) algorithm by incorporating SM control into soil evaporation (E-s) and canopy transpiration (T). Both algorithms were evaluated using 17 eddy covariance towers across different biomes of China. The PT-SM ET model shows increased R-2, NSE and reduced RMSE, Bias, with more improvements occurring in water-limited regions. SM incorporation into T enhanced ET estimates by increasing R-2 and NSE by 4% and 18%, respectively, and RMSE and Bias were respectively reduced by 34% and 7 mm. Moreover, we applied the two ET algorithms to the whole of China and found larger increases in T and E-s in the central, northeastern, and southern regions of China when using the PT-SM algorithm compared with the original algorithm. Additionally, the estimated mean annual ET increased from the northwest to the southeast. The SM constraint resulted in higher transpiration estimate and lower evaporation estimate. E-s was greatest in the northwest arid region, interception was a large fraction in some rainforests, and T was dominant in most other regions. Further improvements in the estimation of ET components at high spatial and temporal resolution are likely to lead to a better understanding of the water movement through the soil-plant-atmosphere continuum.
英文关键词	evapotranspiration Priestley-Taylor algorithm soil moisture evaporation transpiration China
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:000689981900001
WOS关键词	SUPPORT VECTOR MACHINES ; PARTITIONING EVAPOTRANSPIRATION ; GLOBAL EVAPOTRANSPIRATION ; PLANT TRANSPIRATION ; LAND EVAPORATION ; HEAT-FLUX ; WATER ; MODEL ; MODIS ; VEGETATION
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
来源机构	河海大学 ; Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364474
作者单位	[Xing, Wanqiu; Wang, Weiguang; Cao, Mingzhu] Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Peoples R China; [Xing, Wanqiu; Wang, Weiguang; Cao, Mingzhu] Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China; [Shao, Quanxi] CSIRO Data 61, Australian Resources Res Ctr, Kensington, WA 6151, Australia; [Song, Linye] China Meteorol Adm, Inst Urban Meteorol, Beijing 100089, Peoples R China
推荐引用方式 GB/T 7714	Xing, Wanqiu,Wang, Weiguang,Shao, Quanxi,et al. Estimation of Evapotranspiration and Its Components across China Based on a Modified Priestley-Taylor Algorithm Using Monthly Multi-Layer Soil Moisture Data[J]. 河海大学, Commonwealth Scientific and Industrial Research Organisation,2021,13(16).
APA	Xing, Wanqiu,Wang, Weiguang,Shao, Quanxi,Song, Linye,&Cao, Mingzhu.(2021).Estimation of Evapotranspiration and Its Components across China Based on a Modified Priestley-Taylor Algorithm Using Monthly Multi-Layer Soil Moisture Data.REMOTE SENSING,13(16).
MLA	Xing, Wanqiu,et al."Estimation of Evapotranspiration and Its Components across China Based on a Modified Priestley-Taylor Algorithm Using Monthly Multi-Layer Soil Moisture Data".REMOTE SENSING 13.16(2021).