 EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


 EPOD 20th - Snow Crystals In February Snowfalls

   September 08, 2020

    JSP_snowflake3

    JSP_snowflake6

   We’re celebrating 20 years of Earth Science Picture of the Day during
   the month of September! Today’s photo features a popular EPOD from the
   past. Thanks to all of our followers (on the blog, Facebook, Instagram
   and Twitter) for supporting us. Thanks also to all of you who’ve
   submitted your photos. We’re most appreciative. This EPOD was
   originally published March 25, 2015.

   Photographer: Jen Campbell
   Summary Authors:  Brian Campbell;  Jim Foster
   Shown above are photos of  snow crystals taken during snowfalls in
   Salisbury, Maryland, this past February. A  sector plate snow
   crystal is featured at top. Plate crystals such as this are typically
   observed when the air temperature is quite cold, 0-10 F or about -15 C.
   The bottom photo shows a collection of simple  needle snow crystals.
   These formed when the temperature was in the low 20s F (about -5 C).
   The familiar hexagonal shape of snow crystals is a result of the
    six-fold symmetry of the  ice crystal lattice.
   Note that these photos were taken from about 2 in (5 cm) away. It took
   100 shots to get 7 or 8 sharp crystals, like the ones above. Top photo
   taken on February 16, 2015 and bottom photo taken on February 18, 2015.
   Photo Details: 200 mm f/2.8 macro lens, with an  ice light for
   lighting.
     * Salisbury, Maryland Coordinates:  38.431826, -75.634935

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Cryosphere Links

     *  Guide to Frost
     *  What is the Cryosphere?
     *  Bentley Snow Crystals
     *  Glaciers of the World
     *  Ice, Snow, and Glaciers: The Water Cycle
     *  The National Snow and Ice Data Center Google Earth Images
     *  Snow and Ice Crystals

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   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
