Physical mechanism for Karenia brevis bloom initiation in Texas

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Physical Mechanism for Karenia brevis Bloom Initiation in Texas Kristen M. Thyng Harmful Algae 2013 Texas A&M University Robert D. Hetland, Xiaoqian Zhang, Lisa Campbell October 29, 2013 Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 1 / 6

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Mechanism for Aggregation Based on R.D. Hetland and L. Campbell, GRL, 2007. Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 2 / 6

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Mechanism for Aggregation Based on R.D. Hetland and L. Campbell, GRL, 2007. Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 2 / 6

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Mechanism for Aggregation x x x Based on R.D. Hetland and L. Campbell, GRL, 2007. Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 2 / 6

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Diﬀerence in Along-shore Winds in HAB Years 1996 1998 2000 2002 2004 2006 2008 2010 2012 −3.5 −3.0 −2.5 −2.0 −1.5 −1.0 −0.5 0.0 0.5 Year Wind speed (m s-1) non-HAB years HAB years -1.65 m s-1 Based on M.T. Ogle, Masters Thesis, Texas A&M University, 2012. Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 3 / 6

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Backward Drifters from Port Aransas during HAB Times Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 4 / 6

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Backward Drifters from Port Aransas during HAB Times Tracking drifters backward from Port Aransas from the autumn into summer helps indicate their origin Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 4 / 6

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Forward Tracking from the South Limiting drifters to those near Port Aransas during fall shows that drifters in non-HAB years hit the coast or exit the domain before the critical time. Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 5 / 6

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Proposed Mechanisms Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6

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Proposed Mechanisms Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6

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Proposed Mechanisms x x x Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6

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Proposed Mechanisms x x x Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6