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GLM Lightning and Fire-Weather Applications

GLM Lightning and Fire-Weather Applications What are the low hanging fruit and how do we move forward? Topics via discussions with Heffernan and Ochoa (NIFC), Bothwell (SPC), Roohr (NWS):

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GLM Lightning and Fire-Weather Applications

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  1. GLM Lightning and Fire-Weather Applications • What are the low hanging fruit and how do we move forward? • Topics via discussions with Heffernan and Ochoa (NIFC), Bothwell (SPC), Roohr(NWS): • Possible needs: better definition of Ignition points/probability, improve “dry” lightning nowcast, upstream use for downstream forecast, radar t-storm gap filler over terrain • Lightning starts: Can we establish the value added by GLM? • Satellite nowcast; Whatproduct types and what might they look like? – • Ignition point detection; Cell(area)-tracking and extrapolation over terrain (fill gaps in radar coverage)? CG probability? Model assimilation as an integrator? • Physics: In association with (a), can we identify flash characteristics that reliably point to the presence of continuing current (all else being equal [fuels etc.] Latham studies suggest current duration is an issue for fire starts). • Could we combine this information with existing imager-based algorithms for “hot-spot” detection- reduce false alarms? • “Dry” lightning thunderstorms: This is a big concern in the West and with NIFC folks. What could GLM products offer to improve this forecast/nowcast? • Field work • Does it make sense to deploy an LMA network out west to test some ideas? (especially for “Dry” lightning- a major issue for NIFC). • What is the best funding/teaming mechanism for doing this work?

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