Quote:
Originally Posted by HarryD
Hi
I would like your thoughts on a first world problem.
I am always a bit confused when checking Cloud Free Night for Sydney.
For example this coming Saturday has GFS showing no cloud, while Access shows some cloud. On Sunday GFS has cloud declining while Access has cloud increasing on the D1-3 page.
Tuesday has no cloud for GFS and increasing cloud for Access on the D3-5 day and the other previous days change somewhat.
Which is the best one to choose, GFS or Access. I know Access is based on our BMO and I am also aware that weather forecasting is still not an exact science but I would appreciate your thoughts/experience.
I know this is software/computers but clouds and astrophotography seem to go hand in hand.
Cheers
Harry
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Hi Harry, the short answer would be that ACCESS gets it right more often than GFS in coastal areas. If both models diverge significantly then the certainty of the forecast is less than if they both converge to the same result. It's good to have a look at the total cloud meteogram where both models are plotted on the same graph.
You can have a look at this
file for a side by side view of the two models.