Time Series Analysis of Evapotranspiration for Assessing Drough Impact on Wheat Yield
Bozorgi, Mahsa (Universitat Autònoma de Barcelona)
Cristóbal, Jordi (Universitat Autònoma de Barcelona. Departament de Geografia)

Publicación:	Athens : The Institute of Electrical and Electronics Engineers, Inc., 2024
Descripción:	6 pàg.
Resumen:	Drought is a devastating natural hazard which causes reductions in crop yields. This study aims to analyze the relationship between wheat yield and evapotranspiration (ET) dynamics across the last two decades in the Iberian Peninsula. A two-source energy balance (TSEB) model with Terra/Aqua MODIS data and the ERA5 atmospheric reanalysis dataset were used to calculate daily ET at 1 km spatial resolution. The Breaks for Additive Seasonal and Trend (BFAST) method was applied to detect drought events. The ET time series was decomposed into seasonal, trend, and remainder components using BFAST to identify changes in trend and seasonal components in the 22-year daily ET time series. Breakpoints were identified in the ET time series corresponding to the years of yield decline. Results showed ET anomalies can serve as an indicator for recognizing droughts. This research suggests the utility of time series analysis of ET for early drought detection, a practical approach for mitigating the impact of climatic change on crop yields.
Derechos:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Lengua:	Anglès
Documento:	Capítol de llibre ; recerca ; Comunicació de congrés ; Versió publicada
Materia:	Climate change ; Atmospheric modeling ; Time series analysis ; Droughts ; Market research ; Data models ; Crop yield ; Agricultural drought ; Evapotranspiration ; BFAST ; MODIS
Publicado en:	IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium. Proceedings, ISBN 979-8-3503-6033-2

DOI: 10.1109/IGARSS53475.2024.10642928

6 p, 1.5 MB

Disponible a partir de: 2100-01-01

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