underthwx wrote:aspen wrote:Every single run, the GFS-Para is determined to make Zeta one of if not the highest October ACE maker in history. That’s nearly a full week as a major hurricane — easily 30-40+ ACE despite not getting down into the 920s like yesterday’s runs.
That is unsettling...I'm not picking on you Aspen, but can you explain what the GFS para is please?
The GFS has an operational version - the normal GFS. But at the same time, they are always upgrading it. The GFS parallel, to my understanding is the next upgrade candidate in line. A year or two ago they did a complete overhaul, and so they started offering the public model data from both the current and new versions in parallel. And apparently they decided to continue with that as they make smaller upgrades.
IN theory the new version should be better than the current version - its supposed to be an upgrade after all. But it might be better in some ways (maybe it diagnoses the 500 mb heights better) and worse in others (too rapid in cyclogenesis).
Either way, its basically just another model to throw on the pile, with its own biases, and such.