Archive for March, 2021
It was the perfect setup for an historic March day. An unusually strong anticyclone sandwiched between two cut off lows. The tight pressure gradient and orientation between the low off Morocco and high over the western Med drove a powerful southerly wind which transported hot west Saharan air north over Europe. 500mb height anomaly This […]
On March 24, 2021, Summit Station observed a (preliminary) temperature of -64.1C. This suggests a new record low for March at Summit, if not in all of Greenland and latest -60C also.
Not much write up required here. Quite the rollercoaster this week with taste of summer Monday-Tuesday but winter makes a return by Good Friday. You can see in the below GFS ensemble 5-day mean 500mb pattern the dramatic shift in the blocking high between day 1-5 and 6-10 with retreat from Europe to Greenland. 5-day […]
March 2021 has been a changeable month with flips between high and low pressure, mild and cool and with variable rainfall amounts and distribution. One of the most noteworthy aspects has been the cooling of the continent thanks to cold, continental air flowing west, southwest beneath a persistent area of high pressure often placed west […]
A strong ‘atmospheric boulder’ of high pressure positioned from Azores to Arctic created an atmospheric traffic jam over recent days and presented an unusual temperature profile. This highly amplified, omega block located west of Scotland forced subtropical air into the arctic circle and arctic air south back across Europe. Here was the 500mb setup back […]
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