Roller Coaster clouds, mechanism confirmed by rapidly varying in direction winds and sudden refraction readings change

 ~Low clouds shaped by North to Northeast taking turns with Northwest winds,  natural art with interesting science.

~They implicate co-existing micro to macro dynamic structures, a rather much more complex meteorology, stubbornly mostly invisible. 

     The wavy nature of these just prior straight clouds, well away of a hill, are Roller Coaster clouds,  straight away from the camera lens is the Northwest, 90 degrees right Northeast winds cause the clouds to descend . You can note on the second wave, the up and down curve  mimics a coaster.  It turns out that the sky refraction varied when one wind direction dominated versus the other.  

20:00	-15.8	-18.3	81	LegendMM	35	17		101.38		-24	LegendNANA
21:00	-16.8	-20.1	76	LegendMM	1	34		101.31		-29	LegendNANA
22:00	-18.3	-21.2	78	LegendMM	32	21		101.31		-29	LegendNANA
23:00	-18.8	-21.7	78	LegendMM	35	27		101.24		-30	LegendNANA

Southwest Cornwallis Island consist of a raised beach descending to Barrow and McDougall Sound,  it has a  200 to 300 meter raised plateau a few Kilometres Eastwards from shore.  Hourly winds of record on April 25 also miss the Northeast gusts which happened late in the Evening (6th column is wind direction, 7th is speed in Km/hr.). 

The camera is aimed towards the Southeast, again occasional winds from the North or Northeast, in irregular sequence with winds from the Northwest created these spectacular Roller Coaster clouds, 200 meters or so high, touching the ground at about 40 meters.  

      At the same time of these I measured sun disks varying in dimensions confirming the mixed nature of the air, one was colder the other over all warmer.  This well defined cloud geometry is again the first time witnessed or filmed by me, this was a very rare event.  Surely something like this occurred in the past with only lenticular clouds far from touching the surface.  The refraction bit is quite exciting, it is not unusual to measure wild variations in sun disk dimensions, these are still a great puzzle,  because invisible air does not define. However, variable refraction moments indicate unknown un mapped air pockets,  some quite large and lasting, some fleeting and small.    This definitely indicates a rather complex atmosphere abounds all around us, sort of a field of Lorenz mega butterflies, may trigger, detour, reshape, stall or accelerate ongoing patterns.  This complexity may be known by some carefully looking at surface weather maps, showings mysterious small Lows or anticyclones, rather captured by satellite pictures and positioned on a weather chart.  There can be an abundance of small vortices, or on some days, none.  These are what makes weather difficult to predict,  they also can be uncovered, but no one is actually seeing or mapping them enough, EH2r introduces the beginning  tip of a discovery iceberg  perhaps leading to a radical different weather map never imagined, surely to be achieved, on a  future perfect good forecast spanning much longer than a few days. WD April 27 2025