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Evaluate the SAFY-CO2 diagnostic crop model, which integrates high-resolution satellite remote sensing observations, for quantifying daily carbon dioxide fluxes and annual carbon budgets in winter wheat.

June 26, 2020GeodermaOpen Access

Estimation of daily CO2 fluxes and of the components of the carbon budget for winter wheat by the assimilation of Sentinel 2-like remote sensing data into a crop model

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Authors

GPGaétan PiqueUniversité Toulouse III - Paul Sabatier RFRémy FieuzalCentre National de la Recherche Scientifique ABAhmad Al BitarCentre National de la Recherche Scientifique

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Implication

Modeling study demonstrates accurate daily carbon dioxide flux and yield estimation in winter wheat, highlighting satellite-driven crop models for regional carbon monitoring.

Key Points

Evaluate the SAFY-CO2 diagnostic crop model, which integrates high-resolution satellite remote sensing observations, for quantifying daily carbon dioxide fluxes and annual carbon budgets in winter wheat.
Assimilated multi-temporal green area index (GAI) maps from Formosat-2 and SPOT satellites into the SAFY-CO2 model to calibrate light-use efficiency and phenological parameters.
Validated predictions against 8 years of eddy-covariance net CO2 flux measurements at 2 instrumented sites and in situ biomass and yield data across 16 fields in southwest France between 2005 and 2014.
Model reproduced GAI dynamics (RRMSE = 14%, R2 = 0.97), biomass production (RRMSE = 27%), and crop yield (RRMSE = 21%) across varied environmental conditions.
Net CO2 flux components tracked field measurements closely over 8 years: gross primary production (RMSE = 1.74 gC·m⁻²·d⁻¹, R2 = 0.90), ecosystem respiration (RMSE = 1.13 gC·m⁻²·d⁻¹, R2 = 0.75), and net ecosystem exchange (RMSE = 1.29 gC·m⁻²·d⁻¹, R2 = 0.85).

Cite This Study

Pique et al. (2020) studied this question.

synapsesocial.com/papers/6aacffeb716fc9c42ca8706e https://doi.org/10.1016/j.geoderma.2020.114428

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Implication

Modeling study demonstrates accurate daily carbon dioxide flux and yield estimation in winter wheat, highlighting satellite-driven crop models for regional carbon monitoring.

Estimation of daily CO2 fluxes and of the components of the carbon budget for winter wheat by the assimilation of Sentinel 2-like remote sensing data into a crop model

Discussion

Member takes

Implication

Key Points

Cite This Study

Estimation of daily CO2 fluxes and of the components of the carbon budget for winter wheat by the assimilation of Sentinel 2-like remote sensing data into a crop model

Discussion

Member takes

Implication

Key Points

Cite This Study

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