Millions of Snowflakes

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Then imagine using 3, of these pictures to manually train an algorithm to recognize six different classes of snowflakes. And, finally, imagine using this algorithm to classify the snowflakes in the millions of remaining pictures into those six classes at breakneck speed. Their pioneering approach was featured in the latest issue of Atmospheric Measurement Techniques. We now have a pretty good understanding of the mechanisms involved in rain," says Berne.

Many factors -- like the shape, geometry and electromagnetic properties of individual snowflakes -- affect how snow crystals reflect signals back to weather radars, making our task much harder. And we still don't have a good grasp of the equivalent liquid water content of snowflakes. Our goal with this study was to better understand exactly what's falling when it snows, so that we can eventually improve snowfall forecast at high altitudes.

To reach their goal, the researchers acquired a Multi-Angle Snowflake Camera MASC - a sophisticated instrument composed by three synchronized cameras that simultaneously take high resolution up to micron pictures of snowflakes as they pass through a metallic ring. In collaboration with the Federal Office of Meteorology and Climatology MeteoSwiss and the Institute for Snow and Avalanche Research, they installed the MASC at a site near Davos, at an altitude of 2, meters, where it took pictures for an entire winter and at a site in coastal Antarctica, where it took pictures for an entire austral summer.

They then ran their algorithm to classify the snowflake images into six main classes based on existing classification: planar crystals, columnar crystals, graupels, aggregates, combination of column and planar crystals, and small particles. The researchers used the pictures taken by the MASC to also determine the degree of riming of each snowflake based on its surface roughness image 3.

That revealed significant differences in how often every snowflake family appeared. Sweet, simple, quiet. Feb 12, Sherry rated it it was amazing Recommends it for: infant, toddler, easy reader. Fun and sweet beginning reader! Dec 14, Eric rated it it was amazing Shelves: kids-books. Another great read aloud,adapted into braille for the blind. Dec 05, K rated it liked it Shelves: winter.

Cute counting book. Jan 11, Meg McGregor rated it really liked it Shelves: read-to-lexi. In Nevada we don't often have snow but I would wish that everyone could experience the pure joy and wonder of a snowfall the way this little girl and her faithful dog do! Jul 16, Laura rated it really liked it Shelves: picture-book , kidlit , counting-book. Adorable counting picture book. The rhyming is perfect. Jan 26, Polly rated it really liked it Shelves: childrens-books , fiction , picture-books , worth-re-reading , story-time. A cute winter story for storytime.

We used it all the time when I was doing team-storytime for giant groups in Washington. The shortest bedtime story I've ever read.

Two snowflakes may actually be alike

My daughters and I just looked at each other when it ended. It was two minutes well spent overall I'd say. Dec 16, Colleen added it Shelves: kindergarten.

Hello, Sunshine! Dec 13, Crystal rated it really liked it Shelves: picture-book , winter , counting. This was perfect with the pre-k class. They were able to anticipate some of the rhyming words and help count the snowflakes. Jan 31, Sydney McClure rated it really liked it Shelves: concept , nature , picture-book , life , scaffolding , science.

Snowflake lands massive $ million investment on unicorn valuation – TechCrunch

This is a good book for younger grades. It helps with counting and seasons.


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Inferencing can be taught as well, which I saw in my kindergarten classroom today. Feb 05, Aaliyah rated it it was amazing. We really loved this book! Very fun! Jan 22, Brandi rated it really liked it Shelves: picture-book , children. A rhyming, counting picture book about winter and snow with lovely illustrations.


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  • Feb 19, Laura rated it really liked it. My son thinks the kid in the illustrations is him. Too cute. Morgan Boyle rated it it was ok Jan 11, Jonathan rated it liked it Aug 22, Diane rated it liked it Aug 18, Aisha rated it liked it Apr 30, Courtney Lewis rated it liked it Dec 20, Nikki rated it liked it Dec 22, There are no discussion topics on this book yet. Readers also enjoyed. About Mary McKenna Siddals.

    Mary McKenna Siddals. Books by Mary McKenna Siddals. Trivia About Millions of Snowf No trivia or quizzes yet. Welcome back.

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