The downstream effects are a shrunken atmosphere with greater occurrence of low pressure cells and more meridional jet streams and blocking highs. (landscheidt.info)
Weather during the fall season in Portugal is generally stable with the North Atlantic low pressure cells sending lines of groundswells throughout the day. (srfer.com)
Furthermore, sea level pressure patterns are starting to lock into a combination of a dipole pattern (high over Canada, low over Siberian oceans) and a dominant low pressure cell within the Arctic Basin. (searcharcticscience.org)