Found this too but haven't had time to read nor analyze any of this stuff yet sorry: https://www.forbes.com/sites/marshallshepherd/2023/02/18/tracking-unidentified-balloons-and--a-train-derailment-smoke-plumewhat-is-hysplit/?sh=79803320561e
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Found this too but haven't had time to read nor analyze any of this stuff yet sorry: https://www.forbes.com/sites/marshallshepherd/2023/02/18/tracking-unidentified-balloons-and--a-train-derailment-smoke-plumewhat-is-hysplit/?sh=79803320561e