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Junorch obs and discussion 2026


Damage In Tolland
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GFS is fighting warmth like it does ever spring and early summer.  

This recent series' of runs' technique was to pinch off the bottom the exiting trough into all of a 576 dm height low and act like that's sufficient to drive near gale east chilly flow into the M/A and commensurately destroying the sensible weather up and down the EC all next week.  

It's been showing all kinds of continuity issues with that scenario tho.   18z yesterday it pinched off almost no planetary scaled turd.  Yet a coffee break in model time later it goes and stinks up the whole works with this bs at 00z.   We'll see. 

Both the Euro, CMC and the ensembles of all three, EPS,GEPS and GEFs are less with that ordeal.   The only thing going for the GFS typical fuck it up for everyone by inventing physical math is that gee ... this spring has seemed to succeed at doing that anyway.  

Actually in fairness the 06z GFS was less shitty looking. But therein is an example of continuity issues.  I tend to think the GFS is over sensitive to curvature in the flow.  In both directions - perhaps an emergent property if not error of it's 'physical machinery'.  It seems to conserve too much when troughs are lifting out, and does these nip and tuck jobs too often.  On the other end, it ablates the extent or ridging by fire-hosing polar jet velocities over top of the curvature like a stump grinder. It's subtle with this overall, but it's just enough to be annoying and one cannot unsee it once they get a sense of it happening with this model.

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