气候变化领域集成服务门户(CCPortal): Generating Hourly Continuous Evapotranspiration Using Fengyun-2F Geostationary Satellite Data

CCPortal

DOI	10.1029/2021EA002090
	Generating Hourly Continuous Evapotranspiration Using Fengyun-2F Geostationary Satellite Data
	Geng, Xiaozhuang; Li, Boyang; Pan, Xiaoduo; Wei, Zhihao; Yang, Xuebin; Liao, Kuo; Cui, Yaokui
通讯作者	Cui, YK (通讯作者)
发表日期	2022
EISSN	2333-5084
卷号	9 期号:3
英文摘要	Evapotranspiration (ET) plays an important role in water and energy exchange between the atmosphere and the land surface. ET at regional scale is of great importance in hydrology, meteorology, and agriculture. The remotely sensed land surface temperature (LST)-based two-source energy balance (TSEB) model is widely used to monitor ET. However, due to the influence of clouds, the quality of remotely sensed LST products is declined and there are also many gaps in the LST products, which make it very difficult to estimate spatio-temporally continuous ET based on remote sensing data. In this study, we proposed a method to generate hourly continuous ET using Fengyun-2F geostationary images. First, the hourly continuous real LST are obtained using a clear-sky LST reconstruction algorithm and radiometric correction algorithm, and then the reconstructed real LST is used to the estimation of latent heat flux using the TSEB model. The results in the Heihe River Basin show that the proposed method can successfully generate hourly continuous ET compared with three eddy covariance sites with different underlying surface. The estimated ET achieves acceptable performance with RMSE = 81.88 W/m(2) and R-2 = 0.67 at hourly scale and with RMSE = 1.48 mm/d and R-2 = 0.65 at daily scale. We believe this can help the community to better understand the water and energy exchange between the atmosphere and the land surface at fine spatio-temporal scale, especially on the hourly scale.
关键词	HEAT-FLUX SURFACE EVAPORATION MODEL SOIL VEGETATION MODIS TEMPERATURES ALGORITHM SYSTEM
语种	英语
WOS研究方向	Astronomy & Astrophysics ; Geology
WOS类目	Astronomy & Astrophysics ; Geosciences, Multidisciplinary
WOS记录号	WOS:000777609100021
来源期刊	EARTH AND SPACE SCIENCE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260671
推荐引用方式 GB/T 7714	Geng, Xiaozhuang,Li, Boyang,Pan, Xiaoduo,et al. Generating Hourly Continuous Evapotranspiration Using Fengyun-2F Geostationary Satellite Data[J]. 中国科学院青藏高原研究所,2022,9(3).
APA	Geng, Xiaozhuang.,Li, Boyang.,Pan, Xiaoduo.,Wei, Zhihao.,Yang, Xuebin.,...&Cui, Yaokui.(2022).Generating Hourly Continuous Evapotranspiration Using Fengyun-2F Geostationary Satellite Data.EARTH AND SPACE SCIENCE,9(3).
MLA	Geng, Xiaozhuang,et al."Generating Hourly Continuous Evapotranspiration Using Fengyun-2F Geostationary Satellite Data".EARTH AND SPACE SCIENCE 9.3(2022).