It is not yet even autumn, but nevertheless, I woke up this morning to a white carpet of snow draped over the tundra. There have been signs that this day was coming; yesterday morning, while uncovering the transmitter, I discovered snow and ice wedged into the folds of the tarps and the local fauna have being making their transition from summer to winter coats and plumage.
I was expecting a much more gradual transition, but I’m realizing just how quickly the seasons change in the Arctic. Consider for example that this region transitions from approximately zero hours of daylight at the winter solstice to twenty four hours of daylight at the summer solstice. This means that over the span of one month, there is an average of four hours of daylight lost or gained, or over one week, there is an average of one hour change.
One of the more interesting observations I have made has been the transition of the animals. The arctic hares are beginning to have a mottled grey and white coat as they transition to a fully white coat for winter. The change in the ptarmigans is even more notable. Instead of the mottled brown feathers of summer, white feathers are creeping upward from their feet, which have now become more snowshoe-like. I will be interested in seeing just how far the transition will come before I head back to balmy Southern Ontario.
As it turned out, almost all of the snow melted during the day; however, the reprieve was short-lived. As the sun lowered in the sky, once again I felt the snow begin to fall.


Dear Jeremy, thank you so much for your blog. The picture of the ptarmigans is beautiful. Do they stay in the north all winter? and, if not, where do they go to for the winter? We spent the evening with an older couple who live in this building. They are in their early 80s and were recently married. We had some of their delicious wedding cake. Even at this old age they are very romantic with each other. Cheers to you Jeremy. Grandma and Grandpa
Yep, they hang around all year and eventually turn completely white.
Hi, Jeremy
I had to get Albert to show me how to open this letter, but it is worth while, wow…
Your Dad told me this morning he had to close the windows for the first time since it was getting pretty cool, but it sure is something different there.
Keep the news coming.
love. Beppe
Hey Jer!
I was interested in your comments about how rapidly the hours of daylight change. A coworker and I had discussed this last fall. Because all of this stuff is sinusoids, you would have been up there about when the rate of change of daylight hours is the greatest (the equinox-ish?). Just curious if you noted what the maximum rate of change while you were up there? I could do some rough math but I’d probably be way off.
Interesting question, because in retrospect, I don’t believe that the change in daylight was quite as much as I estimated it should be on average. That is to say, I’d say the change in daylight over the time I was there was roughly four or five hours for five weeks, but as you say, September should be the time of maximum change, meaning the average monthly change at Goose Lake is actually less than four hours. This could be explained by the fact that I was slightly south of the Arctic Circle (by about 1 degree).
Huh, that’s weird. If it does go from 24 hours of light to 0 hours, then I would expect it to not matter exactly where you are. Maybe I need to think about this more. You aren’t forgetting about any change in sunrise time by chance, are you?
I was going to say that it is south of the Arctic Circle and therefore doesn’t go from 0 to 24 hrs; however, with a bit of research, I found out that it does go to 24 hours, but not to zero hours. How about that? I’m not exactly sure how that works. Curiously, the rate of change doesn’t seem constant either.
From the NRC’s Herzberg Institute of Astrophysics:
Date – Daylight hours (Twilight hours)
Jun 21 – 24.00 (24.00)
Jul 21 – 19.86 (24.00)
Aug 21 – 16.04 (18.22)
Sep 21 – 12.45 (14.14)
Oct 21 – 9.00 (10.76)
Nov 21 – 5.39 (7.73)
Dec 21 – 3.17 (6.31)
(from http://app.hia-iha.nrc-cnrc.gc.ca/cgi-bin/sun-soleil.pl)