Category Archives: weather

Hotspot

  Now that the wildfire season seems behind us, no concern is likely to be raised by a discussion of something called the hotspot in the forest. The hotspot is an optical phenomenon in the form of a diffuse bright region around … Continue reading

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Rainbow season

  One year differs from the next. Last year had a dramatic forest fire; this year almost nothing burned. Last year we hardly noticed black bears; this year they abound. Last year offered copious dragonflies; this year there were few. There are years … Continue reading

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Momentum transfer

  Wind has momentum: After all, it is a moving mass of air. The magnitude of this momentum usually varies with height in the atmosphere, because aloft the density is lower but the wind is typically stronger. Convection in the … Continue reading

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Hailstorm

  The day bounces around from sun, to cloud, to rain, to hail, and back to sun. The sight and sound of hail falling on the Lake is magnificent. Depending upon the size of the hailstones, the sound ranges from … Continue reading

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Sky line

  The title is not a typo: this is about a sky line, not a skyline. The last time I saw a nice example of this was three years ago: sky lines. This posting is an adaptation of what I … Continue reading

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Sunrise

  I was admiring a picture that Derek Kite had taken from high on a ridge above the West Arm. It showed the sunrise over the distant Purcell Range. I wondered if I could capture a similar moment and went … Continue reading

Posted in scenes, weather | 4 Comments

From ice to flowers

  In a lovely example of a seasonal transition, I saw ice extrusions and subalpine buttercups within three metres of each other at an altitude of about 800 metres on a mountainside above Kootenay Lake.  Typically, ice extrusions are seen when the … Continue reading

Posted in weather, wildflowers | 3 Comments

Fifty years ago

  Observe, photograph, interpret, publish. For fifty years I have been remarkably consistent with a procedure that I described for a forthcoming article in Wildlife Afield: Photography is my muse as I explore the natural world. While the roots of this behaviour … Continue reading

Posted in commentary, weather | 4 Comments

Beach source

  Two months ago, in winter tranquility, I noted that most treatments of the seasonal changes of beaches consider only those around oceans or flatland lakes, but ignore the rather different behaviour of mountain lakes. At the risk of whingeing, this … Continue reading

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Two-merlin day

  I usually only get to see a merlin a couple of times a year. Yet yesterday, I saw two of them about 50 km apart. A merlin is one of our two falcons, the other being the kestrel. The … Continue reading

Posted in birds, weather | 2 Comments