Category: "Cloud 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 »

A Fogbow

October 25th, 2017
A fogbow, or cloudbow (fog is a type of cloud), is a special type of rainbow. It is just white, and so not as often photographed as the full-spectrum rainbow, but it can be exciting to see nevertheless. [image:72] The reason the fogbow is white is… 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 »

Reflections off Falling Crystals

December 26th, 2009
On my morning icespotting trip the other day (12/23), I caught a glimpse of an unusual sight - a sun pillar. I thought I saw one once last winter, but this one was unmistakable. It seemed more striking even than the one in Robert Greenler's book… more »