#2550 "Portsmouth Harbour Asperitus"

#2550 "Portsmouth Harbour Asperitus" 5x7

This was the third and last morning of the International Plein Air Painters Worldwide Paint Out 2021. The global paint out was in conjunction with the Kingston School of Art (KSOA) and Paint the Town. I thought that I would start painting a series of weather observations. The sky and inland seas of Lake Ontario were going to be the most exciting part of the turbulent morning. 

I continued painting weather observations - this one was started at 9:45 am. Asperitus is a new cloud form. Asperitas requires a stable layer in the atmosphere and wind shear. It helps if the winds are also strong. The wavelength of the cloud pattern varies directly with the wind speed. The stable layer was the warm conveyor belt of the approaching rain storm. 

The convective elements riding the waves of the asperitus were directed northeastward with the warm conveyor belt. The keen observer would note that something had to be amiss. I actually observed these clouds looking northward across Portsmouth Harbour and the buildings and the house and the sail boats. That foreground did not interest me as the clouds were the subject of the observation. I used the more generic shore of Wolfe Island instead. 

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