I’m Lisa Campbell. My dad needs to take the day off today due to some medical issues. He still wants to publish a record every day of key climate maps that illustrate much of the story about how the Arctic is warming. He has one comment today, involving sea level pressure:
On the high-altitude air pressure map, third from the top, observe the large cavity that is forming in the upper left. It reminds one of a similar cavity that formed in Antarctica a week ago. This one is already admitting the penetration of a looping jet stream that is transporting an atmospheric river of medium size. The precipitable water content is having a noticeable impact on temperatures. High sea level pressure may be active in wedging the cavity open. We’ll see how all of this develops tomorrow.
Carl