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1 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Meteotsunami Occurrences in the Great Lakes and.

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Presentation on theme: "1 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Meteotsunami Occurrences in the Great Lakes and."— Presentation transcript:

1 1 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Meteotsunami Occurrences in the Great Lakes and Analysis of a Recent Case in Lake Erie Eric J. Anderson 1, Chin Wu 2, Adam Bechle 2, Greg Mann 3 1 NOAA/GLERL, Ann Arbor, MI 2 U. Wisconsin-Madison 3 NWS/WFO-Detroit

2 2 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Next-Generation GLOFS 5 lakes FVCOM 30 m - 2 km grid connecting channels ice 5 lakes FVCOM 30 m - 2 km grid connecting channels ice Lake Erie FVCOM ( LEOFS ) Michigan-Huron FVCOM ( LMHOFS ) Lake Superior FVCOM ( LSOFS ) Lake Superior FVCOM ( LSOFS ) Lake Ontario FVCOM ( LOOFS ) Lake Ontario FVCOM ( LOOFS ) Huron-Erie Corridor ( HECOFS ) Finite Volume Community Ocean Model (FVCOM) unstructured mesh sigma- and sigma-z coordinates 3D integral flux equations similar to POM Los Alamos Ice Model (CICE)

3 3 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Extreme Storms: Meteotsunamis

4 4 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Extreme Storms in Great Lakes Number of Events Lake ErieLake Michigan

5 5 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Meteotsunamis in Great Lakes

6 6 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Meteotsunamis in Great Lakes

7 7 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Global Meteotsunami Occurrence

8 8 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Atmospheric Forcing

9 9 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Meteotsunamis in Great Lakes Meteotsunamis in the Great Lakes Occur in all 5 Great Lakes Driven by linear/complex convection Wave periods between 2 min – 2 hours Gap in Great Lakes forecasting!

10 10 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI 17:00 UTC17:3018:0018:30 22:30 UTC23:00 23:30 00:00 Radar (KCLE) 6:00pm Madison, OH

11 11 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI

12 12 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Proudman Resonance

13 13 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Observed Conditions Water level displacement – 6-min records

14 14 NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION I GREAT LAKES ENVIRONMENTAL RESEARCH LAB I ANN ARBOR MI Observed conditions Water level displacement – 6-min records Bandpass filtered meteotsunami spectrum – 2 min to 2 hours Storm front Impact T=60min β=0.0025

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