In Step (D) these abnormal emissions are used to supplement the incomplete annual inventory; i.e. we use 350 the aerial measurements to inform the inventory (MII). Extending the example in Figure , data from this detection should be added to the inventory to produce a higher quality inventory, and the MAES simulation should be updated for future simulations to include this type of emission event. If causal data can be determined, the emitter type can be added to the MAES model or the frequency and/or size of an existing emitter could be adjusted using the aerial data.