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The results of the Hybrid IFDMB‐4DVar inversion. Top: the CH2O VCDs of (a) the OMPS product, (b) the a priori simulation, (c) the IFDMB simulation, and (d) the hybrid simulation. Bottom: (e) the total VOC emission ratio of the hybrid a posteriori to the IFDMB a posteriori, and the total VOC emissions of (f) the a priori, (g) the IFDMB a posteriori, and (h) the hybrid a posteriori.
