Evapotranspiration estimates derived using thermal-based satellite remote sensing and data fusion for irrigation management in California vineyards
Visualitza/Obre
Autor/a
Knipper, Kyle R.
Kustas, William P.
Anderson, Martha C.
Alfieri, Joseph G.
Prueger, John H.
Hain, Christopher R.
Gao, Feng
Yang, Yun
McKee, Lynn G.
Nieto, Hector
Hipps, Lawrence E.
Alsina, Maria Mar
Sanchez, Luis
Data de publicació
2018-10-10ISSN
0342-7188
Resum
Irrigation in the Central Valley of California is essential for successful wine grape production. With reductions in water availability in much of California due to drought and competing water-use interests, it is important to optimize irrigation management strategies. In the current study, we investigate the utility of satellite-derived maps of evapotranspiration (ET) and the ratio of actual-to-reference ET (fRET) based on remotely sensed land-surface temperature (LST) imagery for monitoring crop water use and stress in vineyards. The Disaggregated Atmosphere Land EXchange Inverse (ALEXI/DisALEXI) surface-energy balance model, a multi-scale ET remote-sensing framework with operational capabilities, is evaluated over two Pinot noir vineyard sites in central California that are being monitored as part of the Grape Remote-Sensing Atmospheric Profile and Evapotranspiration eXperiment (GRAPEX). A data fusion approach is employed to combine ET time-series retrievals from multiple satellite platforms to generate estimates at both the high spatial (30 m) and temporal (daily) resolution required for field-scale irrigation management. Comparisons with micrometeorological data indicate reasonable model performance, with mean absolute errors of 0.6 mm day−1 in ET at the daily time step and minimal bias. Values of fRET agree well with tower observations and reflect known irrigation. Spatiotemporal analyses illustrate the ability of ALEXI/DisALEXI/data fusion package to characterize heterogeneity in ET and fRET both within a vineyard and over the surrounding landscape. These findings will inform the development of strategies for integrating ET mapping time series into operational irrigation management framework, providing actionable information regarding vineyard water use and crop stress at the field and regional scale and at daily to multi-annual time scales.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
631 - Agricultura. Agronomia. Maquinària agrícola. Sòls. Edafologia agrícola
Pàgines
29
Publicat per
Springer Verlag
Publicat a
Irrigation Science
Citació
Knipper, Kyle R., William P. Kustas, Martha C. Anderson, Joseph G. Alfieri, John H. Prueger, Christopher R. Hain, and Feng Gao et al. 2018. "Evapotranspiration Estimates Derived Using Thermal-Based Satellite Remote Sensing And Data Fusion For Irrigation Management In California Vineyards". Irrigation Science 37 (3): 431-449. doi:10.1007/s00271-018-0591-y.
Programa
Ús Eficient de l'Aigua en Agricultura
Aquest element apareix en la col·lecció o col·leccions següent(s)
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