On 19 Aug, 19:03, sutartsorric wrote:

So shall we agree to differ?

Indeed.

The way I see it, if you cant resolve a hurricane in a 150km x 150km
grid square, how can you move it around the globe?

They're not resolved in full detail but the pressure min / vorticity
max are there enough to be trackable at low resolution - however if
anyone's using global model output to try and work out the intensity,
they're on a hiding to nothing !!

I recall seeing a talk a few years ago about ways of diagnosing
tropical systems in coarse climate model output.

Richard