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Alabama’s Coastal Monsoon: Variability in Sea Breeze Thunderstorm Rainfall

Alabama’s Coastal Monsoon: Variability in Sea Breeze Thunderstorm Rainfall. Jason C. Senkbeil Department of Geography. Data Difficulties. Hourly Precipitation (NOAA). South Alabama Mesonet. Since 2008 for most stations. Complete records available for only 3 stations. BM. Atmore.

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Alabama’s Coastal Monsoon: Variability in Sea Breeze Thunderstorm Rainfall

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  1. Alabama’s Coastal Monsoon: Variability in Sea Breeze Thunderstorm Rainfall Jason C. Senkbeil Department of Geography

  2. Data Difficulties Hourly Precipitation (NOAA) South Alabama Mesonet Since 2008 for most stations • Complete records available for only 3 stations

  3. BM Atmore How do sea-breeze thunderstorms form? MOB RD FH Coden DI

  4. Sea Breeze Rainfall Belt?

  5. 1 Way ANOVA all days 1 Way ANOVA precip days only

  6. Mean decadal daily precip (mm)

  7. Atmore BM MOB RD FH Coden DI Mean afternoon sst 2 – 6 pm and cumulative seasonal precipitation

  8. Wettest summers sea level pressure anomaly (mb) Mobile Bay Minette Fairhope Robertsdale

  9. Wettest summers geopotential height anomaly 500mb Mobile Bay Minette Fairhope Robertsdale

  10. 1982, RD, BM, MOB Sea level pressure 500 mb

  11. Conclusions • Chaos Theory wins • Future research • USA mesonet with Nexrad Level III Radar • Sea Breeze belt appears to exist • Atmore, Coden, Dauphin Island different • Decadal trends? • Correlation between sst and seasonal rainfall • Microscale disturbances

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