Good afternoon.

No climate change, global warming and only 1 Nature paper – not mine.

Start with acknowledgements…

Go through.

Because of observations like this early emphasis on isolated patches

- causes

-dynamics

What determines the size of a patch?

Apologise to many who have seen it.

Coccolithophore bloom

- south of Iceland

- June 1991

Currents clearly stirring the phytoplankton

Clearly not acting equally in all directions

- lots of stretching

- filaments

Is a diffusing blob realistic then?

Rephrase question

Counter-intuitive that growth is irrelevant except for time.

Solution allows for time varying growth rate

Obvious extension to explicitly include limitation

EXPLAIN LIMITATION

- if less near exponential

- if greater decay

Regimes

Confirms earlier model for beta<2.5

For beta>2.5

- biology now important

- width larger than for exponential growth

- counter-intuitive

SOIREE cruise 1999

Fe triggered bloom

Satellite time series

- patch drawn out into filament

- width is constant cf. theory

- theory used as basis for paper on longevity of bloom patch

Observation of patchiness one of oldest oceanographic observations.

Not the oldest…