Category: "Snow Science"

The Curious World of Ice and Snow: Part 1 of 3

February 4th, 2020
In 2012, I gave a "science cafe" talk with a local series sponsored by the Pacific Science Center, KCTS public television, and Science on Tap. The title was "The curious world of ice and snow". The location was a bar in Kirkland, but open to all ages.… more »

Some "Inexplicable" Snow-crystal Features: Applications of Lateral Growth

January 29th, 2020
Last October, I gave a talk at the University of Washington about our recent experiments and ideas about snow-crystal growth. My pitch was general and short, as few folks work in this area and I'd hate to bore them with a long lecture. So, I was… more »

Martini Hoar (raise a tiny glass?)

October 19th, 2019
The hoar-frost crystal shoots up like a thin, solid straw, then suddenly opens up into a cup-like shape. I have seen it often enough to give it a name: "martini hoar". The cup can be weirdly segmented and polyhedral, but it nevertheless widens suddenly.… more »

Thinking Laterally in Crystal Growth…and in Science Publishing

October 10th, 2019
After a long period of work (on and off), we have an accepted paper on the corner pockets we discovered (see here). But during the writing stage, I thought about collecting earlier ideas I had developed during my correspondence with Prof. Akira… more »

Dark lines in melting snowpiles

March 30th, 2019
Snow cleared from a city street slowly vanishes, leaving lines of "dirt". [image:131] (Click on images to view more closely.) Where the snow has a distinct edge, you can see the dark lines are ridges, some of which can be quite sharp: [image:132] Why is… more »

Poster on corner pockets in snow crystals

February 18th, 2019
Last July, I attended the AMS (American Meteorological Society) 15th Conference on Cloud Physics, which was combined with a similar conference on atmospheric radiation. They have these about every four years, but I have missed all those going back to… more »

Bad Snow

November 28th, 2017
This post is about the misrepresenting of snow crystals in public, not about misbehaving crystals and not about snow that has gotten dirty. No doubt you've seen it, the Christmas card with four-pointed "snow" falling, or the sweater with an… more »

Columns!

January 18th, 2017
The poor columns get left out of nearly all snow-crystal discussions, but they are an interesting type. So, to help them out a bit, here's my first column appreciation post.  Let's start with perhaps the most extreme column of all, the Shimizu prism*:… more »

How clouds form snow

January 14th, 2017
To understand snow formation, one must know a little about clouds.  Q: What is in a cloud? A: Air, dust, vapor, droplets, and often, ice.  Q: How much air? How much liquid water? How much ice? A: The answers will probably surprise you. See my short… more »

Snow Science: an annotated list to topics

December 17th, 2016
For those interested in the science of snow, I give an annotated list of relevant blog links.   [image:45]   I) Seminar about snow science (sequence of four videos):  http://www.storyofsnow.com/blog1.php/trip-of-the-ice-man II) All the different types… more »