Contribution to a conference proceedings/Contribution to a book

FZJ-2025-01315

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png CAN WE TRUST GEOSTATIONARY SEVIRI-MSG EVAPOTRANSPIRATION PRODUCTSACROSS EUROPE: SIX-DIMENSIONAL ACCURACY ASSESSMENT

Bayat, B.FZJ* ; Raj, R.FZJ* ; Graf, A.FZJ* ; Vereecken, H.FZJ* ; Montzka, C.FZJ*

2024
IEEE
ISBN: 979-8-3503-6032-5/24

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Please use a persistent id in citations: doi:10.1109/IGARSS53475.2024.10642052

Abstract: This study assesses the accuracy of Spinning Enhanced Visible and Infrared Imager (SEVIRI) geostationary sensor-derived evapotranspiration (ET) estimates from Meteosat Second Generation (MSG) satellites across Europe. Evaluation encompasses seven dimensions: diurnal cycle, daily, intra-annual, inter-annual, ecosystem, and climate zone. Using in situ measurements from 54 eddy covariance (EC) sites spanning 2004 to 2018, SEVIRI actual ET products (diurnal and daily SEVIRI-ETa) and reference ET (daily SEVIRI-ET0) were examined. Results indicate varying accuracies based on diurnal and daily assessments, with seasonal fluctuations. Notably, SEVIRI-ETa demonstrated better accuracy during summer and midday. Intra-annual accuracy for daily SEVIRI-ETa showed improvement mid-year. Peat and grassland ecosystems exhibited higher accuracy than cropland ecosystems. SEVIRI-ET0 mirrored similar patterns with the highest accuracy in crop ecosystems. Overall, SEVIRI-ET products demonstrated consistent accuracy trends across spatial domains, excelling in explaining inter-annual and spatial variabilities. This study provides a comprehensive evaluation of SEVIRI diurnal and daily ET products in Europe, offering insights for optimized product selection.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217) (POF4-217)

Appears in the scientific report 2024

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