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MatthewCockburn

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  1. Point taken about how meaningful it is to extrapolate high altitude surface pressures to sea level. Nonetheless it does look as though actual pressure measurements will be very high - currently 1048 mb and rising at 2mb per 3 hours. Not sure what the record high for Greenland is but Saturday-Sunday could surely get close. https://www.weatheronline.co.uk/weather/maps/current?LANG=en&SI=mph&CEL=C&WMO=04211&TIME=std&CONT=euro&R=310&LEVEL=140&REGION=0004&LAND=__&ART=luftdruck&NOREGION=0&PLZ=&PLZN=&SORT=__&TEMP=___&WETTER=__&
  2. Can anyone explain what is driving such an off-the-scale Greenland high in GFS models on Saturday night. The contours are so close together it’s difficult to read them but it looks like pressure could reach 1110 - which I think is beyond all previous records. what is going on? Is model wrong? Is there something exceptional happening? https://max.nwstatic.co.uk/gfsimages/gfs.20210402/12/39/h850t850eu.png
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