That's interesting now that you mention the wind. I've looked at a lot of totality videos, and for the real time ones with audio it often seemed to me that the wind changed in some way during or near totality. I always put it off as random weather, which in your case in Svalbard it probably is. Now I decided to look into it further.
Apparently, the "eclipse wind" is actually a real thing.
This is fascinating to me. As you would think it is more often a weakening of the wind with the loss of convection, but more significantly there is a change in the wind direction as well. In fact it was hypothesized back in 1901
, using observations from the 1900 eclipse and the early theory of cyclonic systems, that the temperature drop induced by the shadow should act as a cyclonic system, with winds circulating about the center (actually a point just trailing totality, since that's where the minimum temperature is). This pattern is subtle and overlaid on top of whatever the regular weather is already doing, so it's difficult to notice. But it can be seen as a small, systematic change in average wind direction throughout the shadow. Furthermore, while the air itself does not move with the shadow (that of course would be absurd at thousands of km per hour), the pattern does, like a wave through the atmosphere.
I love this section of the 1901 paper:
This was investigated in much more detail in recent eclipses, using comparison of observations to models with and without the eclipse, and they substantiate this "eclipse cyclone" theory. This year should be an outstanding opportunity to test it further with such a long track over populated land.An excellent dissertation about the meteorological effects of eclipses
, including the eclipse wind.On an unrelated note I wanted to ask, if you remember, how early before totality did Venus appear (or how long could it still be seen after?) I suppose it varies a lot from one eclipse to another, but 2015 and 2017 are pretty similar in terms of the magnitude of both the eclipse and Venus.