Apparently the zonal winds at 10hPa are about to return to westerlies as the effects of the SSW fade. I wonder if that will result in even more uncertainty?
Originally Posted by: Gandalf The White
They have been westerly for a few days now, having switched back around the 21st, then after a couple more days of really weak easterlies they went back to westerly for presumably the final time this winter. More importantly, they're ramping up now rather than increasing really slowly.
That's already knocked the reversal down to the 30hPa level and that too ends in a couple of days.
In theory it's after that that the effects work their way down into the troposphere.
If anything, now that the SSW is over it should increase reliability a bit. There are never any gaurantees with the models though!